square ceiling diffusers
DESCRIPTION
Square Ceiling Diffusers Of Shahrokhi MFG CoTRANSCRIPT
FIXED SQUARE CEILING
DIFFUSERS & GRILLES
APPLICATION
Shahrokhi fixed square ceiling diffusers &
grilles are designed to suit H.V.A.C
applications for ceiling mounting.These diffusers are used for supply, return
and exhaust air which provide a stable
pattern of horizontal air diffusion flowing
through a number of concentrically arranged
vanes (figure 1). These vanes are able to
provide 1,2,3 or 4 way air flow patterns.
����������� ������������� ���������
������������������� ������������������������� ��������
!�"#�������$��%&'����(��&�� �����������)�*���+
,�- ���+�. �/�0������(1-���2&����
����3� ��456$����7�����8�9�� ������)����������:�
��9 �;��'���� �� �����* �&<�������)�=6������-�+�
,>?�@<+A���&����B��C- �D�����E��F �3�� �������G��$
������F �H� �����)���� �� ����=6���45��I��������:�
,>J�@<+A��-� ��K�/
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?
SH.SDI.F1
SH.SDI.F2
SH.SDI.F3
SH.SDI.F4
FRAME
Seven types of frame are available up on
request (figure 3).Select the type of frame is relative to
installation of diffusers location.This ability exists in (D,E,F,G) types which
internal concentrically arranged vanes come
out of frame for installation , adjust damper
and cleaning (Figure 4).Either is possible to adjust damper with
creation of a hole in internal vanes(Figure 5).
L�I
M��3�������� ��*���������&��>N�@<+A�L���I�!���-���
O3P������������(1-�@�Q�����L�I�!�-�L�63- �,�+���
,�� �
�������������� ����)��> A�! ���- �����45��I�:�
��73P+���������E�42&$�8������(1-���)�L�I�R �5* �
,>S�@<+A��&�T����4�
���������������.�H������C� �U���/�R �� ��$��:4&�V�
,>W�@<+A���V-�E42&$� �������85* �
D,E,F,G
(FIGURE 2)
SH.SDI .F1
TYPE (A)
SH.SDI .F2
TYPE (A) TYPE (D )
TYPE (C)TYPE (C) TYPE (F )
TYPE (E )TYPE (B) TYPE (B)
SQ
UA
RE
SH.SDI .F4
TYPE (A)
RE
CT
AN
GU
LA
R
TYPE (B)
SH.SDI .F3
TYPE (A)
TYPE (B)
TYPE (C)
DESCRIPTION
Shahrokhi fixed square ceiling diffusers
install easily over the square duct or round
duct with an adaptor (figure 18).In these diffusers high air diffusion flowing
under ceiling results in rapid temperature
and velocity equalization of the mixed air
mass.
;�Q4X�$
���-��T����*���+����������������� ��������
(1-������Y��-�� ���@���"$�H��G��$������������Y�-��
,>?Z�@<+A��-�+�
��R� ��[9���� ����=6�� \���� D�4�����������!�-�:� ���
]��56�� ������^�����;� ��.��)�����+��_^���0��
,��+�Y��%3��`�%���
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI J
33
.0m
m.
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIN
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile in matt aluminium
anodized finish for frames and vanes.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code upon requirement.
a-����� ��
?bJW�����6X�����77��B�4&4��FT�@49����R �������������I
(���&���44������B��4&4��FT��+�D�� ���-T�=��������3V454�
,�-�+���4�$
=+��������������-� D�4�T�a-������� ����)����<� �:�
�3� 5��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�
R�4-�����)�$����d67��Y �����V+��� �O���a-��������4�
,��+�B�C-
SH : Shahrokhi manufacture
SDI : Square ceiling diffuser
T : type : F1 : One way fixed type
F2 : Two way fixed type
F3 : Three way fixed type
F4 : Four way fixed type
WxHxk : Width (inch) x Height (inch) x Vanes way (Figure 2)
*���+��-�*��� : SH
���������������� : SDI
����� �9��#<� : F1 : ����� !�- : T
e�^�>f&� A !�$� �>f&� A >J�@<+A����������)x x : W x H x k
����� �9��/ �� : F2
����� �9��/ �� : F3
���� �9�/���� : F4
SH.SDI.T-W x H x k
ORDERING CODE
Shahrokhi fixed square ceiling diffusers &
grilles are specified with following ordering
code.
�������
�������������� ������������������������ ���������
,�-�+��d67����R������������*���+
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI S
SH.SDI.F (SUPPLY)
ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIW
NECK.AREA
SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
(in )Xin
(sq.ft)in.w.g.
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
<18
50
100
200 200
400
500
700
200
179
256
222
229
0.010
0.007
0.010
0.019
0.014
0.015
<18
19
21
13 13
25 25
50 50
100 100
125 125
175 175
19
38
75
150
188
263
13
25
50
100
125
175
25
50
100
200
250
350
50
100
200
400
500
700
4 4
6 6
10 10
14 14
16 16
19 19
5
9
12
18
21
24
7
11
14
19
23
28
13
15
18
22
28
34
4
6
10
14
16
20
7 7
11 11
14 14
18 18
21 21
25 25
12
13
16
21
27
28
11
15
19
24
29
34
17
21
28
31
34
42
7
11
14
18
21
25
75
150
300 300
525
700
950
300
268
337
311
310
0.026
0.021
0.026
0.033
0.028
0.028
<18
18
20
25
25
26
19 19
38 38
75 75
131 131
175 175
238 238
28
56
113
197
263
356
19
38
75
131
175
238
38
75
150
263
350
475
75
150
300
525
700
950
5 5
7 7
12 12
17 17
21 21
23 23
7
10
14
19
22
27
9
12
16
21
25
29
14
17
21
24
30
36
5
7
12
17
20
23
9 9
12 12
15 15
21 21
24 24
27 27
13
14
19
25
28
33
13
16
22
28
31
37
19
23
29
36
36
45
9
12
16
20
24
27
100
200
400 400
650
900
1200
400
357
417
400
392
0.046
0.037
0.460
0.050
0.046
0.044
19
20
26
29
30
30
25 25
50 50
100 100
163 163
225 225
300 300
38
75
150
244
338
450
25
50
100
163
225
300
50
100
200
352
450
600
100
200
400
650
900
1200
6 6
9 9
14 14
18 18
22 22
26 26
9
11
16
20
25
29
11
14
18
22
27
32
15
18
24
26
32
38
6
9
14
18
22
26
11 11
13 13
16 16
22 22
27 27
31 31
14
16
22
27
31
37
15
18
24
29
33
40
21
26
33
39
40
48
11
13
18
22
27
32
125
250
500 500
775
1100
1450
500
446
497
489
474
0.072
0.058
0.072
0.071
0.069
0.065
23
25
31
33
35
35
31 31
63 63
125 125
194 194
275 275
363 363
47
94
188
291
413
544
31
63
125
194
275
363
63
125
250
388
550
725
125
250
500
775
1100
1450
8 8
11 11
15 15
19 19
23 23
27 27
11
13
17
21
27
30
12
15
19
23
29
34
16
19
26
27
33
39
8
11
15
19
23
27
12 12
15 15
18 18
24 24
29 29
33 33
15
17
23
28
32
39
17
20
28
31
34
42
22
28
36
42
43
49
12
15
20
24
29
33
150
300
600 600
900
1300
1700
600
536
577
578
556
0.104
0.084
0.104
0.097
0.097
0.090
27
29
35
36
39
39
38 38
75 75
150 150
225 225
325 325
425 425
56
113
225
338
488
638
38
75
150
225
325
425
75
150
300
450
650
850
150
300
600
900
1300
1700
9 9
12 12
16 16
20 20
25 25
29 29
12
14
19
22
28
32
14
16
21
23
30
35
17
21
28
28
35
40
9
12
16
20
25
28
13 13
16 16
20 20
26 26
31 31
36 36
16
19
25
30
33
40
19
23
29
32
36
44
24
30
38
47
47
51
13
16
22
27
30
35
175
350
700 700
1025
1500
1950
700
625
657
667
637
0.142
0.114
0.142
0.126
0.129
0.118
32
33
40
42
44
44
44 44
88 88
175 175
256 256
375 375
488 488
66
131
263
384
563
731
44
88
175
256
375
488
88
175
350
513
750
975
175
350
700
1025
1500
1950
10 10
13 13
17 17
21 21
26 26
30 30
13
15
20
23
29
34
14
17
22
24
31
36
18
22
29
29
36
41
10
13
17
21
26
30
14 14
17 17
22 22
27 27
32 32
37 37
17
21
27
31
35
42
20
25
31
34
38
45
26
31
41
48
50
54
14
17
23
28
31
38
200
400
800 800
1150
1700
2200
800
714
737
756
719
0.186
0.148
0.186
0.158
0.167
0.150
36
38
44
47
49
49
50 50
100 100
200 200
288 288
425 425
550 550
75
150
300
431
638
825
50
100
200
288
425
550
100
200
400
575
850
1100
200
400
800
1150
1700
2200
11 11
14 14
18 18
22 22
27 27
31 31
14
16
21
23
30
35
15
18
24
25
32
37
19
23
30
31
37
43
11
14
18
22
27
31
15 15
18 18
23 23
28 28
33 33
38 38
19
22
29
32
36
44
21
26
33
36
39
47
28
32
44
49
53
56
15
18
24
29
32
39
225
450
900 900
1275
1900
2450
900
804
817
844
801
0.230
0.188
0.230
0.193
0.205
0.186
40
40
47
49
52
54
56 56
113 113
225 225
319 319
475 475
613 613
84
169
338
478
713
919
56
113
225
319
475
613
113
225
450
638
950
1225
225
450
900
1275
1900
2450
12 12
15 15
19 19
23 23
29 29
33 33
15
17
22
24
31
36
16
19
26
26
33
38
20
25
31
32
39
44
12
15
19
23
29
33
16 16
19 19
24 24
29 29
34 34
40 40
21
24
31
33
37
45
22
27
35
39
41
48
30
34
46
51
55
58
16
19
25
30
33
40
<18
<18
P
6"x6"
[0.25]
9"x9"
[0.56]
12"x12"
[1.00]
15"x15"
[1.56]
18"x18"
[2.25]
21"x21"
[3.06]
NECK.AREA
SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
( )Xin in
(sq.ft)
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
900
100
75
150
200
200
225
263
150
238
267
227
0.014
0.020
0.002
0.016
0.021
0.014
21
<18
<18
<18
19
<18
225 225
17 33
9 28
15 60
17 83
14 86
338
17
9
15
17
14
225
42
33
60
92
93
450
50
38
75
100
100
900
100
75
150
200
200
22 22
4 6
4 7
4 10
4 12
4 13
25
4
4
4
4
4
29
9
9
12
13
14
34
14
14
16
17
18
22
7
8
10
12
14
28 28
7 11
6 11
7 14
7 16
7 18
31
7
6
7
7
7
35
14
12
17
18
18
41
18
19
21
22
23
28
12
13
15
17
18
1250
125
125
200
250
275
313
329
250
317
333
313
0.029
0.032
0.018
0.029
0.033
0.029
26
19
<18
20
23
22
313 313
21 42
16 47
20 80
21 104
20 118
469
21
16
20
21
20
313
53
55
80
115
128
625
63
63
100
125
138
1250
125
125
200
250
275
26 26
5 8
4 8
5 12
5 14
5 14
30
5
4
5
5
5
34
10
10
14
15
15
39
15
15
17
18
19
26
8
9
13
14
15
30 30
8 12
7 13
8 17
8 18
8 19
36
8
7
8
8
8
39
15
14
19
20
20
46
19
20
22
24
24
30
13
14
17
19
20
1600
150
175
250
300
350
400
395
350
397
400
398
0.046
0.045
0.036
0.045
0.046
0.046
31
20
21
25
26
28
400 400
25 50
22 66
25 100
25 125
25 150
600
25
22
25
25
25
400
63
77
100
138
163
800
75
88
125
150
175
1600
150
175
250
300
350
29 29
5 9
5 9
5 14
5 15
5 16
32
5
5
5
5
5
37
11
12
15
16
16
41
16
16
18
19
20
29
9
11
14
15
16
35 35
9 14
8 15
9 18
9 20
9 21
40
9
8
9
9
9
44
16
17
20
21
22
50
21
22
24
26
27
35
14
16
18
20
21
1950
175
225
300
350
425
488
461
450
476
467
483
0.069
0.062
0.059
0.066
0.063
0.068
36
23
25
30
30
33
488 488
29 58
28 84
30 120
29 146
30 182
731
29
28
30
29
30
488
74
99
120
161
198
975
88
113
150
175
213
1950
175
225
300
350
425
31 31
6 10
5 12
6 15
6 16
6 17
34
6
5
6
6
6
38
12
14
16
16
18
44
17
17
19
20
21
31
10
13
15
16
17
37 37
10 14
10 16
11 20
10 20
11 22
42
11
10
11
10
11
47
17
19
21
22
22
53
22
23
25
26
29
37
15
17
20
21
22
2300
200
275
350
400
500
575
526
550
556
533
568
0.096
0.080
0.088
0.090
0.083
0.094
42
26
30
33
33
36
575 575
33 67
34 103
35 140
33 167
36 214
863
33
34
35
33
36
575
84
121
140
184
233
1150
100
138
175
200
250
2300
200
275
350
400
500
32 32
6 11
6 13
7 15
6 16
7 18
36
7
6
7
6
7
40
13
15
17
17
19
47
17
18
20
20
22
32
11
14
16
16
18
40 40
11 15
11 17
12 21
11 21
12 23
43
12
11
12
11
12
49
18
20
22
22
23
57
23
25
26
28
30
39
16
19
21
22
24
2650
225
325
400
450
575
663
592
650
635
600
653
0.128
0.101
0.123
0.117
0.104
0.124
46
28
35
37
35
39
663 663
38 75
41 122
40 160
38 188
41 246
994
38
41
40
38
41
663
95
143
160
207
268
1325
113
163
200
225
288
2650
225
325
400
450
575
33 33
7 12
7 14
8 16
7 17
7 18
38
7
7
8
7
7
43
14
16
17
18
19
49
18
19
21
21
22
33
12
15
16
17
18
42 42
12 16
12 18
13 21
12 22
12 23
47
12
12
13
12
12
52
19
21
22
23
25
60
24
26
28
29
32
42
17
20
21
23
24
3000
250
375
450
500
650
750
658
750
714
667
739
0.164
0.126
0.164
0.148
0.129
0.159
52
32
40
40
39
43
750 750
42 83
47 141
45 180
42 208
46 279
1125
42
47
45
42
46
750
105
165
180
230
303
1500
125
188
225
250
325
3000
250
375
450
500
650
36 36
7 12
8 15
8 16
8 17
8 19
40
8
8
8
8
8
45
15
16
18
18
20
51
18
20
21
21
23
35
13
16
17
17
19
45 45
13 16
13 20
13 22
12 22
13 24
51
13
13
13
12
13
56
20
22
23
23
26
62
25
28
30
31
34
45
18
21
22
23
25
3350
275
425
500
550
725
838
724
850
794
733
824
0.203
0.153
0.208
0.183
0.157
0.197
56
35
45
44
43
48
838 838
46 92
53 159
50 200
46 229
52 311
1256
46
53
50
46
52
838
116
187
200
253
338
1675
138
213
250
275
363
3350
275
425
500
550
725
38 38
8 13
9 16
9 17
8 18
9 19
42
9
9
9
8
9
47
16
17
18
19
20
53
19
21
22
22
24
38
14
17
18
18
19
48 48
14 17
14 21
14 23
13 23
14 26
55
14
14
14
13
14
60
21
23
24
25
27
65
26
29
31
32
35
48
19
22
23
24
27
ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)
SH.SDI.F (SUPPLY)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI g
in.w.g.
P
24"x24"
[4.00]
6"x9"
[0.38]
6"x12"
[0.50]
6"x15"
[0.63]
6"x18"
[0.75]
6"x21"
[0.88]
NECK.AREA
SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
(in )Xin
(sq.ft)
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
250
200
250 266
250
325
350
250
267
221
248
233
0.018
0.021
0.021
0.013
0.018
0.015
<18
18
16 109
38 62
37 88
31 94
35 128
33 142
16
37
37
31
35
33
118
82
107
109
145
159
125
100
125
125
163
175
250
200
250
250
325
350
4 14
6 10
6 12
6 13
6 14
6 15
4
6
6
6
6
6
15
13
14
15
16
17
19
17
18
19
19
20
15
12
13
14
15
16
7 19
12 15
12 17
12 18
12 19
12 20
7
12
17
12
12
12
20
18
19
20
21
22
24
22
23
25
26
27
20
17
18
19
20
21
325
250
325 346
350
425
475
325
333
310
324
317
0.031
0.033
0.035
0.028
0.031
0.029
20
19
22
19
22
24
18
24
20 142
47 78
49 114
44 131
45 167
44 193
20
47
49
44
45
44
153
102
139
153
190
215
163
125
163
175
213
238
325
250
325
350
425
475
5 15
7 11
8 14
7 14
7 15
7 16
5
7
9
7
7
7
16
14
16
16
17
18
20
18
19
20
20
22
16
13
15
15
16
17
8 21
13 17
13 19
13 19
13 20
13 21
8
13
19
13
13
13
23
19
21
21
22
23
26
24
25
26
28
28
22
18
20
20
21
22
400
300
400 426
450
525
600
400
400
398
401
400
0.046
0.046
0.053
0.046
0.046
0.046
29
18
24
25
27
28
28
30
25 175
57 93
60 140
56 169
56 206
56 244
25
56
60
56
56
56
188
122
171
197
235
272
200
150
200
225
263
300
400
300
400
450
525
600
5 17
9 13
10 15
9 16
9 17
9 18
5
9
10
9
9
9
18
15
17
17
18
20
22
19
20
21
21
24
18
14
16
17
18
19
9 23
14 18
14 20
14 21
14 22
14 23
9
14
20
14
14
14
25
20
22
23
24
25
28
26
27
29
30
31
24
19
21
22
23
24
475
350
475 505
550
625
725
475
467
487
477
483
0.066
0.063
0.074
0.069
0.066
0.068
33
27
32
33
31
34
30 208
66 109
71 166
68 207
67 246
68 295
30
65
71
68
67
68
223
143
203
241
280
329
238
175
238
275
313
363
475
350
475
550
625
725
6 19
11 14
11 16
11 17
13 18
11 19
6
11
11
11
11
11
19
16
18
18
19
21
24
20
21
22
22
25
20
15
17
18
19
20
10 24
15 19
15 21
16 22
15 23
16 24
10
15
21
16
15
16
25
21
23
25
25
26
29
27
29
32
33
33
25
20
22
23
25
25
550
400
550 585
650
725
850
550
533
575
553
567
0.088
0.083
0.099
0.096
0.089
0.093
37
31
35
35
36
39
34 241
76 124
82 193
81 244
77 285
79 346
34
75
82
81
77
79
259
163
235
285
325
385
275
200
275
325
363
425
550
400
550
650
725
850
6 19
11 15
12 17
12 18
12 19
12 20
6
11
12
12
12
12
21
17
19
19
20
22
25
20
22
23
23
27
20
16
18
19
19
21
11 25
16 20
16 22
17 23
16 24
17 25
11
16
22
17
19
17
26
22
24
26
26
27
30
28
32
34
36
35
26
21
23
25
26
26
625
450
625 665
750
825
975
625
600
664
630
650
0.114
0.104
0.129
0.128
0.115
0.123
40
34
37
41
32
43
39 273
85 140
93 219
93 282
88 324
91 397
39
84
93
93
88
91
294
184
267
328
369
442
313
225
313
375
413
488
625
450
625
750
825
975
7 20
12 15
13 18
13 18
12 19
13 20
7
12
13
13
12
13
22
18
19
20
20
23
26
21
22
24
24
28
21
17
19
19
20
21
12 26
17 20
17 23
18 24
17 25
18 26
12
17
23
18
17
18
28
23
25
27
27
28
32
29
33
36
37
37
27
22
24
26
27
27
700
500
700 745
850
925
1100
700
667
752
706
733
0.142
0.129
0.162
0.165
0.145
0.157
43
37
41
46
41
47
44 306
94 156
105 245
106 319
99 364
103 447
44
93
105
106
99
103
329
204
299
372
414
499
350
250
350
425
463
550
700
500
700
850
925
1100
8 21
13 16
13 18
13 19
13 20
14 21
8
13
13
13
13
14
23
19
20
21
21
23
27
22
23
25
25
29
22
18
19
20
20
22
13 27
18 21
18 23
19 25
18 26
19 27
13
18
23
19
18
19
29
24
26
28
29
29
34
30
35
38
39
38
28
23
25
27
28
28
775
550
775 824
950
1025
1225
775
733
841
782
817
0.175
0.157
0.197
0.204
0.178
0.193
46
40
44
48
45
51
48 339
104 171
116 272
118 357
109 403
114 498
48
103
116
118
109
114
364
224
331
416
459
555
388
275
388
475
513
613
775
550
775
950
1025
1225
9 22
14 16
14 19
14 19
14 20
15 21
9
14
14
14
14
15
24
19
20
21
21
24
29
23
24
25
25
30
23
18
20
20
21
22
14 29
18 22
19 24
19 26
19 27
20 28
14
18
24
19
19
20
30
25
27
29
30
30
37
32
36
39
40
40
30
24
26
27
29
29
ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)
SH.SDI.F (SUPPLY)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIh
in.w.g.
P
6"x24"
[1.00]
9"x12"
[0.75]
9"x15"
[0.94]
9"x18"
[1.13]
9"x21"
[1.31]
9"x24"
[1.50]
NECK.AREA
SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
( )Xin in
(sq.ft)
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
300
350
400
550
450
525
240
233
229
275
239
240
0.016
0.015
0.015
0.022
0.016
0.016
<18
<18
20
18
34 116
33 142
32 168
69 206
94 131
94 169
34
33
32
69
94
94
133
159
184
241
178
216
150
175
200
275
225
263
300
350
400
550
450
525
6 14
6 15
6 17
6 18
14 17
14 17
6
6
6
6
14
14
16
17
17
18
20
19
19
20
21
21
23
23
15
16
17
18
19
18
12 19
12 20
12 22
12 23
18 21
18 22
12
12
12
12
18
18
21
22
23
24
26
24
24
26
28
31
34
32
20
21
22
23
24
23
400
475
550
700
600
700
320
317
314
350
319
320
0.030
0.029
0.029
0.036
0.030
0.030
23
24
24
29
24
24
24
19
45 155
44 193
44 231
88 263
125 175
125 225
45
44
44
88
125
125
178
215
253
306
238
288
200
238
275
350
300
350
400
475
550
700
600
700
8 15
7 17
7 17
7 18
17 18
16 18
8
7
7
7
17
16
17
17
18
19
21
20
20
21
22
22
24
25
16
17
18
19
19
19
13 20
13 22
13 23
13 24
19 23
19 23
13
13
13
13
19
19
22
23
24
25
27
25
26
29
30
33
36
35
21
22
23
24
25
24
500
600
700
850
750
875
400
400
400
425
399
400
0.046
0.046
0.046
0.053
0.046
0.046
28
29
30
33
29
29
56 194
56 244
56 294
106 319
156 219
156 281
56
56
56
106
156
156
222
272
322
372
297
360
250
300
350
425
375
438
500
600
700
850
750
875
9 17
9 18
9 18
9 19
18 19
18 19
9
9
9
9
18
18
18
18
19
20
22
21
21
22
23
24
26
27
17
18
19
20
20
20
14 22
14 23
14 24
14 25
22 25
22 25
14
14
14
14
22
22
23
24
26
27
30
28
30
33
33
34
40
39
23
24
24
25
27
26
600
725
850
1000
900
1050
480
483
486
500
479
479
0.067
0.068
0.068
0.072
0.067
0.067
32
32
34
37
33
34
67 233
68 295
68 357
125 375
187 263
188 337
67
68
68
125
187
187
266
329
391
438
356
432
300
363
425
500
450
525
600
725
850
1000
900
1050
10 18
11 19
10 19
10 20
19 21
19 21
10
11
10
10
19
19
19
20
20
22
23
23
22
23
24
27
28
29
18
19
20
21
22
22
15 23
16 24
15 26
15 27
24 27
25 28
15
16
15
15
24
25
24
26
28
30
33
32
32
35
35
39
43
43
25
26
26
27
30
29
700
850
1000
1150
1050
1225
560
567
571
575
559
559
0.091
0.093
0.095
0.096
0.091
0.091
35
36
38
39
36
37
78 272
79 346
80 420
144 431
218 307
219 393
78
79
80
144
218
218
311
385
460
503
416
504
350
425
500
575
525
613
700
850
1000
1150
1050
1225
11 18
12 20
11 20
11 21
20 22
20 22
11
12
11
11
20
20
20
21
21
23
24
24
23
24
25
28
29
31
18
20
21
22
23
23
17 24
17 26
16 28
16 29
26 29
26 30
17
17
16
16
26
26
25
28
29
31
35
33
35
37
39
41
46
46
26
27
28
29
32
31
800
975
1150
1300
1200
1400
640
650
657
650
638
639
0.119
0.123
0.126
0.123
0.118
0.119
38
40
41
43
40
41
90 310
91 397
92 483
163 488
250 350
250 450
90
91
92
163
250
250
355
442
529
569
475
576
400
488
575
650
600
700
800
975
1150
1300
1200
1400
12 19
13 20
12 21
12 22
20 22
21 23
12
13
12
12
20
21
20
21
22
24
24
25
24
25
26
29
30
33
19
21
22
23
23
24
18 25
18 27
17 30
17 30
27 31
27 31
18
18
17
17
27
27
26
29
30
33
37
35
37
39
41
43
48
48
27
28
30
31
34
32
900
1100
1300
1450
1350
1575
720
733
743
725
718
719
0.151
0.157
0.161
0.153
0.150
0.150
42
44
46
46
44
45
101 349
103 447
104 546
181 544
281 394
282 506
101
103
104
181
281
281
400
499
598
634
535
648
450
550
650
725
675
788
900
1100
1300
1450
1350
1575
13 19
13 21
13 22
13 23
21 23
21 24
13
13
13
13
21
21
21
22
23
25
25
26
25
26
27
30
31
35
20
21
23
24
24
25
19 26
18 29
18 31
18 31
28 32
28 33
19
18
18
18
28
28
28
31
31
36
39
39
39
40
43
45
49
52
28
30
32
32
36
34
1000
1225
1450
1600
1500
1750
800
817
829
800
798
799
0.186
0.193
0.199
0.186
0.185
0.186
45
48
50
50
47
48
112 388
114 498
116 609
200 600
312 438
313 562
112
114
116
200
312
312
444
555
667
700
594
720
500
613
725
800
750
875
1000
1225
1450
1600
1500
1750
14 20
14 21
14 22
14 24
21 24
22 25
14
14
14
14
21
22
21
22
24
26
26
28
25
27
28
32
32
37
21
22
24
25
24
26
19 27
19 30
19 32
19 33
29 34
29 35
19
19
19
19
29
29
30
33
33
39
40
41
40
42
44
47
51
56
29
31
34
34
37
37
ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)
SH.SDI.F (SUPPLY)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Z
in.w.g.
P
12"x15"
[1.25]
12"x18"
[1.50]
12"x21"
[1.75]
12"x24"
[2.00]
15"x18"
[1.88]
15"x21"
[2.19]
NECK.AREA
SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
(in )Xin
(sq.ft)
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
600
600
700 233
875
240
228
250
0.016
0.014
0.015
0.018 21
94 206
129 171
131 219
191 246
94
129
131
191
253
236
285
342
300
300
350
438
600
600
700
875
14 17
8 11
8 11
12 17
14
8
8
12
19
13
12
19
21
16
15
22
18
12
11
18
18 23
15 18
15 19
16 21
18
15
15
16
25
20
21
23
33
25
25
26
24
19
20
22
800
825
950 317
1150
320
314
329
0.030
0.029
0.029
0.032
25
18
26
19
26
125 275
177 236
178 297
251 324
125
177
178
251
338
325
386
449
400
413
475
575
800
825
950
1150
16 19
9 13
9 14
14 19
16
9
9
14
20
15
15
21
25
18
18
25
19
14
14
20
19 24
16 20
16 21
17 23
19
16
16
17
26
22
23
26
36
28
27
30
25
21
22
25
1000
1050
1200 400
1425
400
399
407
0.046
0.046
0.046
0.048
30
21
25
30
31
30
156 344
225 300
225 375
311 401
156
225
225
311
422
413
488
557
500
525
600
713
1000
1050
1200
1425
18 20
10 15
10 16
15 21
18
10
10
15
21
17
17
23
27
20
20
27
20
16
16
22
22 26
17 22
17 23
19 25
22
17
17
19
28
24
25
29
40
31
29
34
27
23
24
27
1200
1275
1450 483
1700
480
485
486
0.067
0.068
0.068
0.068
35
35
36
34
187 413
273 364
272 453
372 478
187
273
272
372
506
502
590
664
600
638
725
850
1200
1275
1450
1700
19 21
12 17
12 18
16 24
19
12
12
16
22
18
18
26
29
22
22
30
21
18
18
25
24 28
18 24
18 24
20 29
24
18
18
20
32
27
27
32
44
33
32
38
29
25
26
31
1400
1500
1700 567
1975
560
570
564
0.091
0.094
0.093
0.093
39
40
40
38
218 482
321 429
319 531
432 556
218
321
319
432
591
590
691
772
700
750
850
988
1400
1500
1700
1975
20 22
14 19
13 19
17 26
20
14
13
17
24
20
21
28
31
24
25
32
23
20
20
27
26 30
19 26
19 26
21 31
26
19
19
21
34
31
33
34
47
36
35
41
31
27
28
33
1600
1725
1950 650
2250
640
656
643
0.119
0.125
0.123
0.120
43
44
44
42
250 550
370 493
366 609
492 633
250
370
366
492
675
679
793
879
800
863
975
1125
1600
1725
1950
2250
20 24
15 20
15 21
18 28
30
15
15
18
25
23
23
30
34
26
28
34
25
21
21
29
27 32
21 28
21 28
23 33
27
21
21
23
36
35
36
36
51
39
41
44
33
29
30
37
1800
1950
2200 733
2525
720
741
721
0.151
0.160
0.157
0.151
46
47
47
47
281 619
418 557
413 688
552 711
281
418
413
552
760
767
895
987
900
975
1100
1263
1800
1950
2200
2525
21 25
16 22
17 23
19 30
21
16
17
19
26
25
26
32
37
28
31
36
26
23
24
31
28 34
22 30
23 31
24 35
28
22
23
24
38
38
70
39
55
42
45
47
35
32
32
39
2000
2175
2450 817
2800
800
827
800
0.186
0.198
0.193
0.186
50
51
52
51
312 688
466 621
459 766
612 788
312
466
459
612
844
856
996
1094
1000
1088
1225
1400
2000
2175
2450
2800
22 26
17 24
18 26
20 31
22
17
18
20
28
27
29
34
39
31
34
38
27
25
27
33
29 36
23 33
25 34
25 37
29
23
25
25
41
40
42
42
59
46
49
51
38
35
35
40
ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)
NOTES:
WIDTH (inch)
HEIGHT (inch)
SIZE :
P :
NECK AREA :
Throw :
NC :
Is the nominal neck
size in inches.Supply pressure drop
in inches water gage.Is in square
feet.In feet corres-
ponding to100 & 50 f.p.m.
terminal velocity.Room NC for supply
based on 8db room effect.
SH.SDI.F (SUPPLY)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIi
OUTLET AREA (AK=sq.ft)
w
H 6 9 12 15 18 21 24
6
9
12
15
18
21
24
0.096 0.144
0.200
0.170
0.260
0.350
0.200
0.320
0.430
0.540
0.240 0.270 0.310
0.370 0.430 0.480
0.500 0.570 0.640
0.610 0.710 0.800
0.770 0.860 0.970
1.040 1.130
1.340
RECOMMENDED CFM
8
10
12
14
16
18
250
500
850
1400
1800
2700
CEILING
HEIGHT(ft)
MAX CFM
PER SIDE
A A
B
B
in.w.g.
P
15"x24"
[2.5]
18"x21"
[2.63]
18"x24"
[3.00]
21"x24"
[3.50]
NECK.AREA
SIZE
(in )Xin
(sq.ft)
NECK.AREA
SIZE
(in )Xin
(sq.ft)
NECK.AREA
SIZE
(in )Xin
(sq.ft)
NECK.AREA
SIZE
(in )Xin
(sq.ft)
NECK.AREA
SIZE
(in )Xin
(sq.ft)
NECK
VEL.
f.p.m.
NECK
VEL.
f.p.m.
NECK
VEL.
f.p.m.
NECK
VEL.
f.p.m.
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
FLOW
RATE
c.f.m.
FLOW
RATE
c.f.m.
FLOW
RATE
c.f.m.
FLOW
RATE
c.f.m.
N.C. N.C. N.C. N.C. N.C.
ENGINEERING PERFORMANCE DATA >�7���� ��A����������������� ��������;�"��Q��Y��)
SH.SDI.F (RETURN)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?j
in.w.g.
P
in.w.g.
P
in.w.g.
P
in.w.g.
P
in.w.g.
P
SIZE :
NECK AREA :
P :
NC :
Is the nom-
inal neck size in
inches.Is in
square feet.Return pre-
s s u r e d r o p i n
inches water gage.Room NC for
return based on
8db room effect.
6"x6"
[0.25]
9"x9"
[0.56]
12"x12"
[1.00]
15"x15"
[1.56]
50 900 250 300 600
100 100 200 350 600
200 75 250 400 700
400 150 250 550 875
200 225 250 240 240
179 263 267 233 228
200 150 266 229 233
256 238 221 275 250
0.011 0.016 0.021 0.019 0.019
0.007 0.024 0.024 0.018 0.017
0.011 0.001 0.024 0.017 0.018
0.022 0.019 0.015 0.026 0.021
<18
18
24 22 26
20 23
21 25 25
22 26 26
75 1250 325 400 800
150 125 250 475 825
300 125 325 550 950
525 200 350 700 1150
300 313 325 320 320
268 329 333 317 314
300 250 346 314 317
337 317 310 350 329
0.031 0.034 0.037 0.036 0.036
0.025 0.038 0.039 0.035 0.034
0.031 0.021 0.042 0.034 0.035
0.040 0.035 0.033 0.043 0.038
29 24 25
22
29
19
18
19 23 27
23
28
23
19
25 28 29
26 21
18
24
20
32 30
100 1600 400 500 1000
200 150 300 600 1050
400 175 400 700 1200
650 250 450 850 1425
400 400 400 400 400
357 395 400 400 399
400 350 426 400 400
417 397 398 425 407
0.055 0.055 0.055 0.055 0.055
0.045 0.054 0.055 0.055 0.055
0.055 0.043 0.063 0.055 0.055
0.060 0.054 0.055 0.063 0.057
20 34 31 31 33
22 21 27 32 33
29 22
19
28 33 34
31 27 30 36 33
125 1950 475 600 1200
250 175 350 725 1275
500 225 475 850 1450
775 300 550 1000 1700
500 488 475 480 480
446 461 467 483 485
500 450 505 486 483
497 476 487 500 486
0.086 0.082 0.078 0.080 0.080
0.069 0.074 0.076 0.081 0.081
0.086 0.071 0.088 0.082 0.081
0.085 0.079 0.082 0.086 0.082
24 37 35 34 37
26 23 29 35 37
34 26 33 35 38
36 30 34 40 37
150 2300 550 700 1400
300 200 400 850 1500
600 275 550 1000 1700
900 350 650 1150 1975
600 575 550 560 560
536 526 533 567 570
600 550 585 571 567
577 556 575 575 564
0.125 0.115 0.106 0.109 0.109
0.100 0.096 0.099 0.112 0.113
0.125 0.106 0.119 0.114 0.112
0.116 0.108 0.115 0.115 0.111
28 43 39 37 41
30 26 33 38 42
38 31 36 39 43
38 34 36 42 41
175 2650 625 800 1600
350 225 450 975 1725
700 325 625 1150 1950
1025 400 750 1300 2250
700 663 625 640 640
625 592 600 650 656
700 650 665 657 650
657 635 664 650 643
0.170 0.153 0.136 0.143 0.143
0.136 0.122 0.125 0.148 0.150
0.170 0.148 0.154 0.151 0.148
0.151 0.141 0.154 0.148 0.144
33 50 42 41 46
34 29 36 43 46
43 36 39 45 47
43 38 42 45 46
200 3000 700 900 1800
400 250 500 1100 1950
800 375 700 1300 2200
1150 450 850 1450 2525
800 750 700 720 720
714 658 667 733 741
800 750 745 743 733
737 714 752 72 721
0.220 0.195 0.170 0.180 0.180
0.177 0.151 0.155 0.187 0.191
0.186 0.195 0.193 0.192 0.187
0.189 0.177 0.196 0.183 0.181
37 56 45 44 49
39 32 39 47 51
47 42 43 49 51
48 41 47 49 51
225 3350 775 1000 2000
450 275 550 1225 2175
900 425 775 1450 2450
1275 500 950 1600 2800
900 838 775 800 800
804 724 733 817 827
900 850 824 829 817
817 794 841 800 800
0.270 0.239 0.208 0.220 0.220
0.222 0.182 0.187 0.229 0.234
0.270 0.245 0.232 0.234 0.226
0.229 0.217 0.241 0.220 0.220
41 60 48 48 53
42 36 43 52 55
50 48 46 53 56
52 46 51 53 54
<18
<18
24"x24"
[4.00]
6"x24"
[1.00]
12"x15"
[1.25]
15"x24"
[2.5]
6"x9"
[0.38]
9"x12"
[0.75]
12"x18"
[1.50]
18"x21"
[2.63]
6"x12"
[0.50]
9"x15"
[0.94]
12"x21"
[1.75]
18"x24"
[3.00]
6"x15" 9"x18" 12"x24" 21"x24"
[0.63] [1.13] [2.00] [3.50]
18"x18"
[2.25]
21"x21"
[3.06]
500 200 325 450
700 200 350 525
222 267 248 239
229 227 233 240
0.015 0.024 0.021 0.019
0.017 0.016 0.018 0.019
20 23 24
26 23 24
700 250 425 600
950 275 475 700
311 333 324 319
310 313 317 320
0.034 0.039 0.037 0.036
0.033 0.034 0.035 0.036
28
22
24 26 27
29 24
21
27 27
900 300 525 750
1200 350 600 875
400 400 401 399
392 398 400 400
0.055 0.055 0.055 0.055
0.053 0.054 0.055 0.055
34 28 31 32
34 30 33 32
1100 350 625 900
1450 425 725 1050
489 467 477 479
474 438 483 479
0.083 0.076 0.079 0.079
0.078 0.081 0.081 0.079
38 31 34 35
38 34 37 36
1300 400 725 1050
1700 500 850 1225
578 533 553 559
556 568 567 559
0.116 0.099 0.107 0.109
0.108 0.113 0.112 0.109
41 34 38 40
43 37 41 40
1500 450 825 1200
1950 575 975 1400
667 600 630 638
637 653 650 639
0.155 0.125 0.139 0.142
0.142 0.149 0.148 0.143
47 37 42 43
47 41 46 45
1700 500 925 1350
2200 650 1100 1575
756 667 706 718
719 739 733 719
0.198 0.155 0.173 0.179
0.180 0.190 0.187 0.180
53 40 44 47
54 45 50 48
1900 550 1025 1500
2450 725 1225 1750
844 733 782 798
801 824 817 799
0.242 0.187 0.211 0.219
0.221 0.232 0.229 0.220
56 45 47 50
60 50 54 51
6"x18" 9"x21" 15"x18"
[0.75] [1.31] [1.88]
6"x21" 9"x24" 15"x21"
[0.88] [1.50] [2.19]
CURVED BLADE CEILING
& GRILLESDIFFUSERS
APPLICATIONS
Shahrokhi curved blade ceiling diffusers &
grilles are designed to suit H.V.A.C
applications for ceiling mounting.These diffusers are used for supply, return
and exhaust air which provide a stable
pattern of air diffusion flowing through
curved blades (Figure 6).These vanes are able to provide 1,2,3 or 4
way air flow patterns (Figure 7).
����������� ��������Fk�����
�����
��������� ��������Fk����������������� ���������
�����$��%&'����(���&�� ������������)�*����+�����
,�- ���+. �/�0������(1-���2&�����!�"#�
����3� ��456$����7����8�9�� �������)����������:�
@<+Fk�� �������G��$� �� �������)�=6������-�+�
,>g�@<+A��&����B�C-
,>h�@<+A��-� ��K�/
������F �H�� �����)��� �� ����=6���45��I��������:�
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI??
SH.SDI.CB1
SH.SDI.CB2
SH.SDI.CB3
SH.SDI.CB4
DESCRIPTION
Shahrokhi curved blade ceiling diffusers
install easily over the square duct or round
duct with an adaptor (Figure 18 ).Blades of these diffusers can be moved or
fixed around the auxial pins (Figure 8 ).Nylon bushing or line spring are used to
seperate the blades from the frame to
eliminate rattling and to provide positive
tension when adjusting them.
;�Q4X�$
-��T����*���+�Fk����������������� ��������
�����Y��-�� ���@��"$�H��G��$��������������Y��-�� ��
,�>?Z�@<+A��-�+��(1-
��*� D�������Q��Y�.�� �$�� ��������!�-�:� � ������
,>Z�@<+A���V-���������l�Q3�
������R � �'�Km.���2&�����L�I�R ����������V-� �)���)
(4$�$�:��������+������3� ��#*���&9�������<43�k�
,�-�4���� �I�=7� ��4-��Q$��������8E42&$����R���
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?J
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?N
A
A=9
A=11
A=13
A=14
Lt
Ld
9 X1.00 X1.000.10XLt
0.12XLt
0.25XLt
0.40XLt
X0.75 X0.80
X0.60 X0.65
X0.50 X0.50
11
13
14
A(mm.) L t Ld P t
7
8
9
10
11
12
300 225 150 75
400 300 200 100
800 600 400 200
1200 900 600 300
1600 1200 800 400
2000 1500 1000 500
CEILINGHEIGHT (ft)
MAX C.F.M. PER SIDE
SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1
FRAME
MATERIAL & FINISH
Three types A,B,C of frame (figure 3) are
available up on request.Select the type of frame is relative to
installation of diffusers location.
High quality 1.25mm. thickness extruded
aluminium profile in matt aluminium
anodized finish for blades and frames.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on requirement.
L�I
a-����� ��
M�3�������� �*�������&��>N�@<+A L�I�!�-���A,B,C
O3P����������(1-�@Q�����L�I�!�-�L�63- �,��+���
,�� �
?bJW����6X����77� @49����R �������������IB�4&4��FT
(��&���44���� ��+�D� ��-T�=�������3V454�B�4&4��FT
,�-�+���4�$
=+�������������-� D4�T�a-������� ����)����<� �:�
�3� 5��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�
R�4-�����)�$����d67��Y �����V+���� �O���a-��������4�
,��+�B�C-
ORDERING CODE
Shahrokhi curved blade ceiling diffusers &
grilles are specified with following ordering
code.
�������
�������� ��������Fk������������������� ��������
,�-�+��d67����R�����������*���+����
SH : Shahrokhi manufacture
SDI : Square ceiling diffuser
T : type : CB1 : Oneway curved blade
CB2 : Two way curved blade
CB3 : Three way curved blade
CB4 : Four way curved blade
WxHxk : Width (inch) x Height (inch) x Blades way (Figure 7)
*���+��-�*��� : SH
���������������� : SDI
Fk� ��� �9�/�H� : CB1 : ����� !�- : T
e�^�>f&� A !�$� �>f&� A >h�@<+A����������)x x : W x H x k
Fk� ��� �9�/ �� : CB2
Fk� ��� �9�/ �� : CB3
Fk� ��� �9�/���� : CB4
SH.SDI.T-W x H x k
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?S
SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
SH.SDI.CB
50
80
130
180
250
310
556
500
520
514
521
492
0.019
0.016
0.017
0.016
0.017
0.015
24
25
26
26
26
26
13
20 20
33 33
45 45
63 63
78 78
19
30
49
68
94
116
13 13
20
33
45
63
78
25
40
65
90
125
155
50
80
130
180
250
310
2
3 3
4 4
4 4
5 5
6 6
2
3
4
4
5
6
3
4
5
6
7
8
5
6
9
10
12
13
2 1
2
2
2
2
3
3
4 4
6 6
6 6
7 7
8 8
4
5
6
8
9
10
3
6
7
9
10
12
7
9
12
13
16
17
3 2
3
3
5
6
7
60
100
160
225
310
390
667
625
640
643
646
619
0.028
0.024
0.026
0.026
0.026
0.024
25
26
27
27
27
27
15
25 25
40 40
56 56
78 78
98 98
23
38
60
84
116
146
15 15
25
40
56
78
98
30
50
80
113
155
195
60
100
160
225
310
390
3
4 4
5 5
5 5
6 6
7 7
3
3
4
6
7
8
4
5
7
8
9
10
6
8
10
13
15
17
3 2
2
2
3
4
5
5
6 6
7 7
8 8
9 9
10 10
4
6
8
10
12
13
5
7
9
11
12
13
8
11
14
16
19
21
5 2
3
5
7
9
10
70
120
190
270
370
470
778
750
760
771
771
746
0.038
0.035
0.036
0.037
0.037
0.035
26
27
28
28
28
28
18
30 30
48 48
68 68
93 93
118 118
26
45
71
101
139
176
18 18
30
48
68
93
118
35
60
95
135
185
235
70
120
190
270
370
470
4
5 5
6 6
6 6
7 7
9 9
3
4
6
7
8
9
4
7
8
10
10
12
7
9
12
14
16
18
4 2
2
3
4
5
6
5
7 7
9 9
9 9
11 11
12 12
5
7
10
11
14
15
6
9
11
12
15
15
9
13
16
19
23
25
5 3
4
7
8
11
12
80
140
220
315
430
550
889
875
880
900
896
873
0.049
0.048
0.048
0.050
0.050
0.048
27
28
29
29
29
29
20
35 35
55 55
79 79
108 108
138 138
30
53
83
118
161
206
20 20
35
55
79
108
138
40
70
110
158
215
275
80
140
220
315
430
550
4
6 6
7 7
8 8
9 9
11 11
5
6
7
8
10
10
6
7
9
11
12
14
8
10
13
16
18
20
4 3
3
4
5
7
7
6
9 9
10 10
11 11
13 13
14 14
6
9
12
14
16
18
7
10
12
15
17
18
11
15
19
23
27
29
6 3
6
9
11
13
15
90
160
250
360
490
630
1000
1000
1000
1029
1021
1000
0.062
0.062
0.062
0.066
0.065
0.062
28
29
30
30
30
30
23
40 40
63 63
90 90
123 123
158 158
34
60
94
135
184
236
23 23
40
63
90
123
158
45
80
125
180
245
315
90
160
250
360
490
630
5
7 7
8 8
9 9
10 10
12 12
5
7
8
10
11
13
6
8
10
12
14
16
9
12
15
18
21
24
5 3
4
5
7
8
10
6
9 9
11 11
13 13
15 15
17 17
7
10
13
16
19
21
8
11
14
18
20
22
12
18
22
26
31
34
6 4
7
10
12
16
17
100
180
280
405
550
710
1111
1125
1120
1157
1146
1127
0.077
0.079
0.078
0.083
0.082
0.079
29
30
34
34
34
34
25
45 45
70 70
101 101
138 138
178 178
38
68
105
152
206
266
25 25
45
70
101
138
178
50
90
140
203
275
355
100
180
280
405
550
710
5
8 8
9 9
10 10
12 12
13 13
6
8
9
12
13
14
7
9
11
13
16
18
10
13
16
19
23
25
5 3
5
6
9
10
11
6
10 10
12 12
14 14
17 17
19 19
7
12
14
18
21
23
9
12
16
19
22
26
13
19
24
27
33
37
6 4
9
11
15
17
19
110
200
310
450
610
790
1222
1250
1240
1286
1271
1254
0.093
0.097
0.096
0.103
0.101
0.098
30
33
37
37
37
37
28
50 50
78 78
113 113
153 153
198 198
41
75
116
169
229
296
28 28
50
78
113
153
198
55
100
155
225
305
395
110
200
310
450
610
790
5
8 8
9 9
11 11
13 13
15 15
6
9
10
13
14
16
7
10
13
15
18
20
10
14
18
22
25
28
5 3
6
7
10
11
13
7
11 11
14 14
16 16
18 18
21 21
8
13
16
19
23
26
10
14
18
21
25
29
15
21
27
32
37
42
7 5
10
12
16
19
23
120
220
340
495
670
870
1333
1375
1360
1414
1396
1381
0.111
0.118
0.115
0.125
0.121
0.119
35
35
40
40
40
40
30
55 55
85 85
124 124
168 168
218 218
45
83
128
186
251
326
30 30
55
85
124
168
218
60
110
170
248
335
435
120
220
340
495
670
870
6
8 8
10 10
12 12
14 14
16 16
6
9
11
13
15
17
8
11
14
17
19
22
12
16
20
24
28
32
6 3
6
8
10
12
14
8
12 12
15 15
17 17
20 20
23 23
9
14
18
21
25
28
11
16
20
23
27
31
17
23
29
36
40
46
8 6
11
14
17
22
25
ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?W
AK
SIZE
(in )Xin
(sq.ft)in.w.g.
PT
6"x6"
[0.09]
8"x8"
[0.16]
10"x10"
[0.25]
12"x12"
[0.35]
14"x14"
[0.48]
16"x16"
[0.63]
SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
400
500
600
725
1100
1300
500
510
500
518
500
500
0.016
0.016
0.016
0.017
0.016
0.016
26
26
27
27
27
27
100 100
125 125
150 150
181 181
275 275
325 325
150
188
225
272
413
488
100
125
150
181
275
325
200
250
300
363
550
650
400
500
600
725
1100
1300
7 7
7 7
8 8
9 9
11 11
12 12
7
8
9
10
12
13
9
10
11
12
15
16
15
17
18
20
25
27
4
5
6
7
9
10
9 9
10 10
12 12
13 13
16 16
17 17
12
13
14
15
19
21
13
14
16
18
22
24
19
21
23
25
31
34
9
10
11
12
16
18
500
625
750
910
1350
1625
625
638
625
650
614
625
0.024
0.025
0.024
0.026
0.023
0.024
27
27
28
28
28
28
125 125
156 156
188 188
228 228
338 338
406 406
188
234
281
341
506
609
125
156
188
228
338
406
250
313
375
455
675
813
500
625
750
910
1350
1625
8 8
9 9
10 10
11 11
13 13
15 15
8
10
11
12
14
16
12
13
13
16
18
21
19
21
23
25
30
35
5
7
8
9
11
13
11 11
13 13
14 14
16 16
19 19
21 21
14
16
17
19
23
26
16
19
19
22
25
31
24
27
29
32
38
45
11
13
14
16
20
23
600
750
900
1095
1600
1950
750
765
750
782
727
750
0.035
0.037
0.035
0.038
0.033
0.035
28
28
29
29
29
29
150 150
188 188
225 225
274 274
400 400
488 488
225
281
338
411
600
731
150
188
225
274
400
488
300
375
450
548
800
975
600
750
900
1095
1600
1950
10 10
11 11
12 12
13 13
15 15
17 17
10
12
12
14
16
18
13
16
16
18
22
24
21
23
26
29
35
39
7
9
9
11
13
15
14 14
15 15
17 17
19 19
22 22
25 25
17
19
21
23
27
31
19
21
24
26
32
34
28
32
34
38
46
51
14
16
18
20
24
28
700
875
1050
1280
1850
2275
875
893
875
914
841
875
0.048
0.050
0.048
0.052
0.044
0.048
29
29
30
30
30
30
175 175
219 219
263 263
320 320
463 463
569 569
263
328
394
480
694
853
175
219
263
320
463
569
350
438
525
640
925
1138
700
875
1050
1280
1850
2275
11 11
13 13
15 15
16 16
18 18
21 21
12
14
14
16
19
21
16
18
20
22
25
29
23
26
28
31
38
42
9
11
11
13
16
18
16 16
18 18
20 20
22 22
26 26
29 29
20
22
24
27
31
35
21
24
26
30
35
39
32
38
40
45
53
59
17
19
21
24
28
32
800
1000
1200
1465
2100
2600
1000
1020
1000
1046
955
1000
0.062
0.065
0.062
0.068
0.057
0.062
30
30
35
35
37
37
200 200
250 250
300 300
366 366
525 525
650 650
300
375
450
549
788
975
200
250
300
366
525
650
400
500
600
733
1050
1300
800
1000
1200
1465
2100
2600
13 13
14 14
16 16
18 18
21 21
24 24
15
15
17
19
22
25
18
20
22
24
28
33
27
29
33
36
41
48
12
13
14
16
19
22
19 19
20 20
23 23
25 25
29 29
34 34
24
26
28
31
35
41
25
28
30
34
39
45
38
42
46
51
60
68
21
23
25
28
32
38
900
1125
1350
1650
2350
2925
1125
1148
1125
1179
1068
1125
0.079
0.082
0.079
0.087
0.071
0.079
34
34
37
37
42
42
225 225
281 281
338 338
413 413
588 588
731 731
338
422
506
619
881
1097
225
281
338
413
588
731
450
563
675
825
1175
1463
900
1125
1350
1650
2350
15 15
17 17
18 18
20 20
23 23
26 26
16
17
19
21
25
28
20
23
25
27
32
36
29
32
35
39
46
13
14
16
18
22
25
21 21
24 24
26 26
28 28
32 32
39 39
25
28
31
34
41
45
29
31
35
39
45
49
42
49
51
57
68
22
25
28
30
37
42
1000
1250
1500
1835
2600
3250
1250
1276
1250
1311
1182
1250
0.097
0.101
0.097
0.107
0.087
0.097
37
37
40
40
44
44
250 250
313 313
375 375
459 459
650 650
813 813
375
469
563
688
975
1219
250
313
375
459
650
813
500
625
750
918
1300
1625
1000
1250
1500
1835
2600
17 17
19 19
20 20
22 22
25 25
30 30
18
20
22
25
27
32
22
25
28
31
35
39
33
36
40
43
48
15
17
19
22
23
29
23 23
26 26
29 29
32 32
36 36
43 43
28
31
36
39
44
51
34
35
39
43
49
58
49
53
59
64
73
25
28
33
36
41
48
1100
1375
1650
2020
2850
3575
1375
1403
1375
1443
1295
1375
0.118
0.123
0.118
0.130
0.105
0.118
40
40
44
44
45
45
275 275
344 344
413 413
505 505
713 713
894 894
413
516
619
758
1069
1341
275
344
413
505
713
894
550
688
825
1010
1425
1788
1100
1375
1650
2020
18 18
20 20
22 22
25 25
28 28
32 32
20
22
24
27
30
34
25
28
31
34
37
45
37
41
43
48
17
19
21
23
27
31
26 26
28 28
32 32
35 35
39 39
46 46
31
34
39
42
48
56
35
39
42
47
53
64
53
58
63
70
27
31
36
39
45
52
ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)
SH.SDI.CB
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?g
AK
SIZE
(in )Xin
(sq.ft)in.w.g.
PT
18"x18"
[0.80]
20"x20"
[0.98]
22"x22"
[1.20]
24"x24”
[1.40]
30"x30”
[2.20]
34"x34”
[2.60]
SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1
A A A AA A A AA A A AB B B BB B B BB B B B
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE
c.f.m.
SIDE THROW SIDE THROW SIDE THROW SIDE THROW
MIN MIN MIN MINMAX MAX MAX MAX
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
N.C.
1600
2200
2600
2900
500
500
500
509
0.016
0.016
0.016
0.016
27
27
27
29
400
550 550
650 650
725 725
600
825
975
1088
400
550
650
725
800
1100
1300
1450
1600
2200
2600
2900
14 14
16 16
17 17
18 18
14
17
18
19
18
21
23
25
30
36
38
40
11
14
15
16
19 19
22 22
24 24
25 25
22
28
29
31
26
31
33
35
38
45
49
51
18
25
26
28
2000
2750
3275
3625
625
625
630
636
0.024
0.024
0.025
0.025
28
28
28
30
500
688 688
819 819
906 906
750
1031
1228
1359
500
688
819
906
1000
1375
1638
1813
2000
2750
3275
3625
16 16
19 19
21 21
22 22
18
20
23
24
24
27
29
32
36
44
48
51
15
17
20
21
24 24
27 27
30 30
33 33
28
32
35
39
33
38
39
43
48
57
61
65
25
28
32
36
2400
3300
3950
4350
750
750
760
763
0.035
0.035
0.036
0.036
29
29
29
37
600
825 825
988 988
1088 1088
900
1238
1481
1631
600
825
988
1088
1200
1650
1975
2175
2400
3300
3950
19 19
24 24
25 25
27 27
21
25
26
29
27
32
35
37
43
50
54
18
22
23
26
27 27
33 33
35 35
37 37
33
39
43
47
38
46
48
51
57
66
69
30
36
41
43
2800
3850
4625
5075
875
875
889
890
0.048
0.048
0.049
0.049
30
30
30
43
700
963 963
1156 1156
1269 1269
1050
1444
1734
1903
700
963
1156
1269
1400
1925
2313
2538
280024 24
27 27
30 30
31 31
24
28
30
32
31
36
40
43
4721
25
27
29
32 32
36 36
42 42
43 43
39
46
50
54
43
49
55
58
6736
43
47
51
3200
4400
5300
5800
1000
1000
1019
1018
0.062
0.062
0.065
0.065
37
37
37
44
800
1100 1100
1325 1325
1450 1450
1200
1650
1988
2175
800
1100
1325
1450
1600
2200
2650
2900
320026 26
30 30
35 35
35 35
29
33
37
38
36
42
47
50
5526
30
33
35
37 37
44 44
50 50
50 50
46
54
59
62
50
58
64
68
7643
50
54
58
3600
4950
5975
6525
1125
1125
1149
1145
0.079
0.079
0.082
0.082
42
42
42
45
900
1238 1238
1494 1494
1631 1631
1350
1856
2241
2447
900
1238
1494
1631
1800
2475
2988
29 29
33 33
39 39
41 41
31
37
40
43
39
45
53
28
34
37
40
41 41
48 48
56 56
59 59
50
59
66
67
55
65
74
47
55
62
63
4000
5500
6650
7250
1250
1250
1279
1272
0.097
0.097
0.102
0.101
44
44
44
46
1000
1375 1375
1663 1663
1813 1813
1500
2063
1000
1375
200033 33
37 37
43 43
45 45
37
40
4633
37
47 47
53 53
60 60
65 65
56
64
6552
61
4400
6050
7325
7975
1375
1375
1409
1399
0.118
0.118
0.124
0.122
45
45
45
47
1100
400
500
600
700
800
900
1000
1100
1513 1513
1831 1831
1994 1994
1650
2269
1100
1513
220037 37
43 43
47 47
49 49
39
46
4936
43
51 51
60 60
67 67
70 70
62
73
7058
69
ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)
SIZE :
AK :
P :
Throw :
NC :
Is the listed size in inches.
Outlet area in square feet.
Total pressure in inches water gage.
In feet corresponding to 135&65 f.p.m. terminal velocity.
Room NC for supply based on 18db room effect.
A A
B
B
SH.SDI.CB
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?h
AK
SIZE
(in )Xin
(sq.ft)in.w.g.
PT
T
36"x36"
[3.20]
42"x42"
[4.40]
46"x46"
[5.20]
48"x48”
[5.70]
PERFORATED FACE CEILING
DIFFUSERS & GRILLES
APPLICATION
Shahrokhi perforated face ceiling diffusers &
grilles with spot air diffusion flowing ability
designed to suit H.V.A.C applications for use
in surgery rooms in hospitals or equal
spaces. These diffusers are used for supply
and exhaust air and provides a stable
pattern of air diffusion flowing (Figure 9).
DESCRIPTION
Shahrokhi perforated face ceiling diffusers
have a face which punched with 15mm.
diameter holes and install easily over the
square duct or round duct with an adaptor
(Figure 18).
����������� ��������@V^�n�$
�����
��������� �������@V^�n��$ ������������� ���������
�#�-�;��1�� �����&&��=6���45��I����*���+�����
���2&�����!�"#������$��%&'����(��&�� �������� ��)
���7� ���3� ����<����������-�3���V4��@V^� ��I�$ ���
,�- ���+�. �/
���-�+������3� ��456$����9�� �����)���������:�
,>i@<+A�&����B�C- ��* �&<��;��1�� � �������)�=6�
;�Q4X�$
� ��*����+�@�V^�n��$ �������������� ��������
�� ��3V454��?W��#I������* ���������+�f-����Q'�H�
���@��"$�H��G��$������������Y�-��� ��-��T������
,>?Z�@<+A�-�+��(1-�����Y�-��
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?Z
SH.SDI.PF
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile for frames and 1mm.
thickness aluminium sheet for face in matt
aluminium anodized finish.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on requirement.
a-����� ��
�3V454��?bJW����6X����77��B�4&4��FT�@49����R �����I
=�������3V454��H�����6X����B�4&4��FT�n���R ��Q'��
,�-�+���4�$�(��&���44�����B�4&4��FT���+�D� ��-T
=+���������������- R4�T�a-������� ����)����<� �:��
�3� F��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�
����)�$�����d67��Y ������V+���� �O���a-�����������4�
,��+�B�C- �R�4-
ORDERING CODE
Shahrokhi perforated face ceiling diffusers
& grilles with following ordering code are
specified.
�������
������������� ������@V^�n�$ ������������ �������
,�-�+��d67����R�����������*���+
Shahrokhi manufacture
Square ceiling diffuser
: Perforated face
Width (inch) x Height (inch)
SH :
SDI :
PF
WxH :
*���+��-�*��� : SH
���������������� : SDI
@V^�n�$ : PF
e�^�>f&� A !�$� �>f&� Ax : W x H
SH.SDI.PF-W x H
These diffusers have an ability in adjust the
air flow patterns without change in air
volume, pressure and sound level.
FRAME
Three types A,B,C of frame (figure 3) are
available up on request.Select the type of frame is relative to
installation of diffusers location.
�-�O�4������� �� ��� �����\�E42&$��45��I���������:�
,�-� �� ��� �'�� D4������79�8EC.��� �44o$
L�I
M�3�������� �*�������&��>N�@<+A L�I�!�-���A,B,C
O3P����������(1-�@Q�����L�I�!�-�L�63- �,��+���
,�� �
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?i
CONTROL GRIDS
Control grids are used for control airflow
patterns in a branch ducts and into the neck
of diffusers.These control grids made of a frame and a
number of blades in aluminium which can be
adjust them in desire angles to uniform air
flow.
Y�3&�� ���<"+
�-����������%7- � ���Y�-����� ����� �����\�Y�3&����)
,��+�����3� �Y�3&�� ���<"+�R � ��� �������� ����
��4&4��FT����� � �%$���L�I�H��R �Y�3&�� ���<"+�:�
��� �R���� �����-T�� �$�������- ���+�@4<7$�E42&$�@���I
,��V-�E42&$� ��� �����\����V-�:OV����2&� ����2-�����
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Jj
SH.SDI.PF
ENGINEERING PERFORMANCE DATA @V^�n�$ ������������ ��������;�"��Q��Y��)
3<20
4<20
522
624
729
833
937
1040
4<20
5<20
621
722
825
929
1035
1139
5<20
6<20
8<20
1022
1226
1334
1543
1648
0.002169100
0.003212125
0.004254150
0.005297175
0.007339200
0.009381225
0.011424250
0.014466275
0.001112100
0.002168150
0.003223200
0.005279250
0.007335300
0.010391350
0.012447400
0.016503450
0.002158200
0.004237300
0.006316400
0.010395500
0.014474600
0.019553700
0.025632800
0.032711900
NECK
VEL.
f.p.m.
NECK
VEL.
f.p.m.
FLOW
RATE
c.f.m.
FLOW
RATE
c.f.m.
N.C. N.C.
THROW THROW
f t. f t.
N.C. N.C.
7<20
8<20
10<20
1222
1328
1435
1644
1752
8<20
9<20
1022
1225
1330
1534
1737
1840
0.002169300
0.003225400
0.005282500
0.007338600
0.010395700
0.013451800
0.016507900
0.0205641000
0.002172400
0.003226525
0.005280650
0.007334775
0.009388900
0.0124421025
0.0154951150
0.0195491275
SIZE :AK :P :THROW :
NC :
Is the listed size in inches.Outlet area in square feet.
Total pressure in inches water gage.In feet horizontal ceiling air
pattern based on 100 f.p.m. terminal
velocity.NC based on 10db room attenuation.
AK
SIZE
(in )Xin
(sq.ft)
AK
SIZE
(in )Xin
(sq.ft)in.w.g.
PT
in.w.g.
PT
T
12"x12"
[0.59]
15"x15"
[0.90]
18"x18"
[1.27]
21"x21"
[1.77]
24"x24"
[2.32]
CONE SQUARE CEILING DIFFUSERS
APPLICATION
Shahrokhi cone square ceiling diffusers
have a number of conic nozzles to air flow
patterns which these nozzles are used in
high ceiling spaces, great air flow and throw
such as factories halls, sport halls, exhibition
halls, industrial kitchens, computer centers,
despatching centers and etc.The nozzles are designed to local air
handled each special space.
DESCRIPTION
These nozzles are constructed in two
sizes(figure 10) and it is possible to install
them over the duct surfaces or special
boxes.Through these nozzles can be adjust the air
flow patterns way with use of different duct
surfaces or box angles.Gasket are used to seperate the nozzles
from the box to eliminate rattling.
/��6������������ ��������
�����
���YR��-�*���+�/��6������������� �������
���-�<�������YR�-�:� �����-� �� ����� �����)�/��6�
�&-����������R����$�������� ���� \�������8c$��� ��0�����
����:F���8�+R��� ����:F���8;��C-�*���� ����:F��
D� ���8 �$�4������D� ���83%&'� ���-�*D�+T�8��O7��V-
,�-�4���� �I����3� ��������4p���$ ���6�
���<��������&- ��$������+����� �-��O�����YR�-�. �/
,�&&��-��� ��%X���;��'���� ��'�*
;�Q4X�$
� �$����>?j�@<+A��-�+���3*����R �- ���������YR�-�:�
,��V-�(1-�q�16������"%)����Y�-�����)�� ��� ���-T
R ����3� ���� �� ����� ���;��)�� �$����YR�-�:� ��54���
,��V-�E42&$��"%)����Y�-�����)��0536�� �� �R
�+ ��R � �'�Km.���2&������"%)�R ���YR�-����V-� �)���)
,��+�����3� �<43�\
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJ?
SH.SDI.C
MATERIAL & FINISH
High quality 0.6mm. thickness carriage
extruded aluminium sheet for the nozzles
and 1mm thickness aluminium sheet for the
box in matt aluminium anodized finish.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on requirement.
a-����� ��
jbg�����6X������+����-77� B��4&4��FT�n�� R ���YR�-
�3V454��H�����6X����B�4&4��FT�n���R ����"%)����3V454�
�4�$�(���&���44������B���4&4��FT���+�D�� ����-T�=��� ��
,�-�+�
=+������ ������-� D4�T�a-� ����� � ��)����<� �:�
�3� 5��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�
R�4-�����)�$����d67��Y �����V+���� �O���a-��������4�
,��+�B�C-
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JJ
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJN
Shahrokhi manufacture
Square ceiling diffuser
Cone 100mm diameter
Cone 120mm diameter
SH :
SDI :
T : type : C100 :
C120 :
*���+��-�*��� : SH
���������������� : SDI
�3V454��?jj��#I����/��6� ������!�-: C100 : T
�3V454��?Jj��#I����/��6� : C120
SH.SDI.T
ORDERING CODE
Shahrokhi cone square ceiling diffusers with
following ordering code are specified.
�������
������*�����+��/��6�������������� ���������
,�-�+��d67����R�����
2529
2632
2736
2840
2945
3046
3148
3250
3352
50 263 595 0.022
65 342 774 0.037
80 421 952 0.057
95 500 1131 0.080
110 579 1310 0.107
125 658 1488 0.138
140 737 1667 0.173
155 816 1845 0.212
170 895 2024 0.255
100 0.190 0.084
SIZE
DIA
mm.
AK1
(sq.ft)
AK2
(sq.ft)
FLOW
RATE
c.f.m.
VK1
f.p.m.
VK2
f.p.m.
N.C.
ft.
THROW
SH.SDI.C100
2422
2528
2633
2739
2744
2847
2950
3053
3156
50 182 410 0.010
75 274 615 0.024
100 365 820 0.042
125 456 1025 0.065
150 547 1230 0.094
175 639 1434 0.128
200 730 1639 0.168
225 821 1844 0.212
250 912 2049 0.262
120 0.274 0.122
SIZE
DIA
mm.
AK1
(sq.ft)
AK2
(sq.ft)
FLOW
RATE
c.f.m.
VK1
f.p.m.
VK2
f.p.m.
N.C.
ft.
THROW
SH.SDI.C120
ENGINEERING PERFORMANCE DATA �3V454��?Jj��#I����/��6������������� ��������;�"��Q��Y��)
�3V454��?jj��#I����/��6������������� ��������;�"��Q��Y��)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JS
ENGINEERING PERFORMANCE DATA
in.w.g.
PT
in.w.g.
PT
SIZE :
AK1 :
AK2 :
VK1 :
VK1 :
P :
THROW :
NC :
Is the nominal diameter outlet neck size in mm.
Is the neck area in square feet for inlet.
Is the neck area in square feet for outlet.
Is the neck velocity in f.p.m. for inlet.
Is the neck velocity in f.p.m. for outlet.
Total pressure in inches water gage.
In feet based on 100 f.p.m. terminal velocity.
Room NC based on 18db room effect.
T
SPHERICAL SQUARE CEILING
DIFFUSERS
APPLICATION
Shahrokhi spherical square ceiling diffusers
with control ability in air flow patterns are
used for office buildings, Training spaces,
Laboratories,Amphitheaters, etc.These diffusers have a number of spherical
nozzles with 360 deg. rotation to air flow
patterns (Figure 11).
��������������� �������
�����
Y�3&���45��I����*���+� ��������������� �������
����[9�8 � � � ���-�V3*������%X���;��1�� ����=6�
,�-� �� ��������4p������$r�$��T�8������O7���RT�8+R��T
��)��)���Ngj�=*������ ���������YR�-����������:��
,>??�@<+A��-� �� ����� ��
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJW
SH.SDI.S45 SH.SDI.S85SH.SDI.S30
DESCRIPTION
The nozzles are constructed in three sizes
(Figure 12 & 13) and it is possible to install
them over the duct surfaces or special
boxes.Gasket are used to seperate the 85mm. DIA.
nozzles from the box to eliminate rattling.
;�Q4X�$
>?J�?N� ��@<+A��-�+���3*����R �- ���������YR�-�:�
q�16�� �����"%)����Y���-�����)�� ��� �����-T�� ��$���
,����(1-
����"%)�R �3V454��ZW��#I���� ����YR��- ���V-� �)���)
,��+�����3� �<43�\��+ ��R � �'�Km.��2&�
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Jg
1
Shahrokhi manufacture
Square ceiling diffuser
Spherical 30mm. DIA.
Spherical 45mm. DIA.
Spherical 85mm. DIA.
SH :
SDI :
T : type : S30 :
S45 :
S85 :
*���+��-�*��� : SH
���������������� : SDI
�3V454��Nj��#I���� ��� ������!�-: S30 : T
�3V454��SW��#I���� ���
�3V454��ZW��#I���� ���
: S45
: S85
SH.SDI.T
ORDERING CODE
Shahrokhi spherical square ceiling diffusers
with following ordering code are specified.
�������
�����������*����+� ��������������� �������
,�-�+��d67����R
MATERIAL & FINISH
The 30&45mm. DIA. nozzles are const-
ructed from special compressed plastic.The 85mm. DIA. nozzle constructed from
carriage extruded aluminium sheet with
0.6mm thickness.High quality 1mm. thickness aluminium
sheet in matt aluminium anodized finish for
boxes.White polyester liquid or powder coating
finish is also available for boxes & 85mm.
DIA. nozzle or any other specified color with
raul code up on requirement.
a-����� ��
����79�H43�k��R ���3V454��SW���Nj��#I���� ����YR��-
B�4&4��FT�n���R ��3V454��ZW��#I����YR�-�,�&+����q�16�
,�+�����3V454��jbg����6X������+����-77�
=��������3V454��H������6X����B��4&4��FT�n���R �����"%)
,�-�+���4�$�(��&���44�����B�4&4��FT���+�D� ��-T
YR��-�������"%)����-� D4�T�a-������� ����)�����<� �:�
������ ���c������a-� =+�������� ����3V454��ZW���#I���
a-����������4���3� �5��R �����3� ����>H4$�3� ���3<F A
,��+�B�C- �R�4-�����)�$����d67��Y �����V+���� �O��
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJh
SH.SDI.S30
153
154
165
166
177
178
189
1910
2011
6 583 906 0.051
7 680 1057 0.070
8 777 1208 0.091
9 874 1360 0.115
10 971 1511 0.142
11 1068 1662 0.172
12 1165 1813 0.205
13 1262 1964 0.240
14 1359 2115 0.279
30 0.010 0.007
SIZE
DIA
mm.
AK1
(sq.ft)
AK2
(sq.ft)
FLOW
RATE
c.f.m.
VK1
f.p.m.
VK2
f.p.m.
N.C.
ft.
THROW
ENGINEERING PERFORMANCE DATA
ENGINEERING PERFORMANCE DATA
�3V454��Nj��#I���� ��������������� ��������;�"��Q��Y��)
�3V454��SW��#I���� ��������������� ��������;�"��Q��Y��)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JZ
147
158
159
1610
1611
1712
1813
1914
2015
14 569 986 0.061
16 650 1127 0.079
18 732 1268 0.100
20 813 1408 0.124
22 894 1549 0.150
24 976 1690 0.178
26 1057 1831 0.209
28 1138 1972 0.242
30 1220 2113 0.278
45 0.025 0.014
SIZE
DIA
mm.
AK1
(sq.ft)
AK2
(sq.ft)
FLOW
RATE
c.f.m.
VK1
f.p.m.
VK2
f.p.m.
N.C.
ft.
THROW
SH.SDI.S45
in.w.g.
PT
in.w.g.
PT
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJi
SH.SDI.S85
ENGINEERING PERFORMANCE DATA �3V454��ZW��#I���� ��������������� ��������;�"��Q��Y��)
1520
1521
1623
1625
1726
1827
1928
1929
2030
50 490 820 0.042
60 588 984 0.060
70 686 1148 0.082
80 784 1311 0.107
90 882 1475 0.136
100 980 1639 0.168
110 1078 1803 0.203
120 1176 1967 0.241
130 1275 2131 0.283
85 0.102 0.061
SIZE
DIA
mm.
AK1
(sq.ft)
AK2
(sq.ft)
FLOW
RATE
c.f.m.
VK1
f.p.m.
VK2
f.p.m.
N.C.
ft.
THROW
in.w.g.
PT
SIZE :
AK1 :
AK2 :
VK1 :
VK1 :
P :
THROW :
NC :
Is the nominal diameter outlet neck size in mm.
Is the neck area in square feet for inlet.
Is the neck area in square feet for outlet.
Is the neck velocity in f.p.m. for inlet.
Is the neck velocity in f.p.m. for outlet.
Total pressure in inches water gage.
In feet based on 100 f.p.m. terminal velocity.
Room NC based on 18db room effect.
T
SQUARE GRILLE DAMPERS
APPLICATION
Shahrokhi square grille dampers are used to
adjust the air flow rate or close the grilles if
neccessery.The blades of these grille dampers are
constructed in two type of parallel or oppo-
site.The levers, which used for adjusting the
parallel blades are constructable in three
types of receprocating, switch and key.It is possible to contact these levers to an
electrical key or a remote control system
where high ceiling or exposed ducts are not
available such as amphitheater,cinema, etc.Either can adjust the space optional
temperature by an electrical thermostat
which illustrates in control line.
�������� ������������
������ D4��E42&$���2&�����*���+��������� ������������
����)����@����c#I���)�R�4-�;��'������� �������)���
,�-�4���� �I����3� ������ ��
,�-�+���3*���Z�h��� R ���!�-�������������:� ���o4$
�-�+�����3� � R ��� ���o4$�E42&$���)����������
,�&+�����*���@��I� �45�����4s���8��7��!�-������
<��3<F ��45��H����� ������� �:� ������ ����)����<� �:�
�&5��0���H�������-�<���������� ��R �Y�3&��E3P4��H����
8�$r$��T� ��:F����&-���M�3���@��I��4p�������Y�-�����
,��V-�@13���� ����)����4p���V&4�
#��$�� �6F��� D4����� ��G4Q� ����� ����� �$��:4&�V�
��4���� �I ����9��4P���� ���<��3<F �;�3����$�H�
,��V-�E42&$
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Nj
DESCRIPTION
In opposite type (Figure 14) removal is by
spin a special screw.
;�Q4X�$
f4��H��� ����G��$����.�Y��3- �>?S�@<+A�Z���h�!�-���
,��4���;��'�q�16�
In receprocating type (Figure 15) the lever is
in the middle of the damper which removal is
at horizontal way.
����39��� �I������G������B�� �>?W�@<+A���7��!�-���
,�+�����9 ��T����.�Y��3- �!�-
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIN?
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI NJ
In key type (Figure 17) the lever is over the
grille frame which removal is at vertical way.
Switch type (Figure 16) the lever is in the
corner of the damper which removal is at
spin way.
�39��� �I��������L�I� ���B�� �>?h�@<+A� �45��!�-���
,�+���� ��V^��T����.�Y��3- �!�-���
�39���� ��I�������t&�����B�� �>?g�@<+A��4s���!�-���
,�+���- �����T����.�Y��3- �!�-���
MATERIAL & FINISH
High quality 1.25mm. thickness extruded
aluminium profile in matt aluminium
anodized finish for key and opposite types.High quality 0.7mm. thickness aluminium
sheet finish for receprocating and switch
types.Either is possible to use 0.7mm. thickness
iron galvanized sheet for receprocating,
switch and opposite types.White polyester liquid or powder coating
finish is also available or any other specified
color with raul code up on request.
a-����� ��
�����77��B��4&4���FT�@�49������R �Z�u�h��� ��45��!��-
B�4&4���FT���+�D� ����-T�=���������3V454��?bJW�����6X
,�-�+���4�$�(��&���44����
����6X����B��4&4���FT�n���R ���4s��������7��! ���-
,�-�+���4�$��3V454��jbh
�����6X�����D��4- ��F����:���T�n���R �� ���$���:��4&�V�
���3� �Z���h�8�4s���8���7��! ��- ���)��3V454��jbh
,���
=+�������������-� D4�T�a-������� ����)����<� �:�
��3� 5�R ����3� ����>H4$�3� ���3<F A� ��������c����a-�
����)�$����d67��Y ������V+���� �O���a-���������4�
,��+�B�C- ��� �*��
ORDERING CODE
Shahrokhi square grille dampers with
following ordering code are specified.
�������
��R��������������*����+���������� ��������������
,�-�+� d67�
SH : Shahrokhi manufacture
GDS : Square grille damper
T : type : RH : Handling control receprocating type
Remote control receprocating typeRR :
SW : Swich type
KE : Key type
OP : Opposite type
W x H : Width (inch) x Height (inch)
*���+��-�*��� : SH
������������������ : GDS
3���Y�3&�������7� �����!�-: RH : : T
����� ��R �Y�3&�������7� : RR
�4s�� : SW
�45� : KE
h���Z : OP
e�^�>f&� A !�$� �>f&� Ax : W x H
SH.GDS.T-W x H
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHINN
6x6
9x9
9x9
12x12
12x12
15x15
15x15
15x15
18x18
5
6
8
8
10
10
12
14
12
4
4
4
6
6
6
6
6
8
18x18
18x18
21x21
21x21
21x21
21x21
24x24
24x24
24x24
8
8
8
8
8
8
8
8
8
14
16
14
16
18
20
16
18
20
SQUARE
NECK
(in in)x
SQUARE
NECK
(in in)x
ADAPTOR LISTED SIZES AVAILABLE
D
(in)
D
(in)
H
(in)
H
(in)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI NS
DIFFUSERS FIXING DETAILS
A) The (Figure 19) shows the location of
screw holes on A,B,C frame types (Figure 3)
of diffusers.
B) The (Figure 20) shows fixing method for
D,E,F,G frame types (Figure 3) of diffusers.
��������(1-�;�4sD)
(1-���)�BR\ ����f4��v ����� @�Q��>?i�@<+A�>0F
,�������7-� ��>N�@<+A ����I������������A,B,C
����I�������������(1-�����/�>Jj�@<+A�>L
,�������7-� ��>N�@<+A
D,E,F,G
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHINW
>��+����.A�-�<P��YR�&�
>��+�@* �A�-�<P��YR�&�
�����&74�� �'�� D��4�
��3���V4�� ��I�$
��-�3���V4��'�1*���@V^� ��I�$
��3���V4����V^� ���[9
� � �w- �&� ��I�$
-�V3*����$�9�
'�1*��39�
��V^��39�
�-�� ���39�
�4��� ����3�
���D��5$������ ��=6��n�$
���$r$
x�3-���:F��
���P45�����)�P�
���-�6��3����M� ��
����O7���RT
���m�� ��&F��
���R�������V^� ���-�6��3�
�P���$�9������<-��
� ��3�����+R��� ����5�
���-�*����I
����O+��9��\���;��"/
�P"F ���O+��9
����O+��9�5' �;��"/
���R�o��8���������
+R��� ��:F��
a&4F���:F��
�&+� ���63�
�/������$�9��8���-�*���
H����;�C-�*���
y�D��;�C-�*���
@3������-�V3*���8��-�V$���T� ��I�$
H-���8dI��n�$ �8��@3�� ��&F��
@3����V^� ���[9
��a&4�����8���-�6��73*��8���-�*D�+T
Residences (suburbia)
Residences (urban)
Music Auditoriums
Radio and Tv Broadcasting
Theatres
Assembly Hall
Mosques, churches
Libraries and Schools
Laboratories
Recreation Halls
Public Libraries, Museums
Banks, Post Offices
Restaurants Night Clubs
Cafeterias
Dept. Stores (upper floors)
Clothing Stores
Dept. Stores (main floors)
Supermarket, Retail stores
Sports Coliseums
Bowling Alley
Swimming pools
Factories, Supt. offices
Light Manufacturing
Heavy Manufacturing
Offices Conference Rooms
Offices Executive
Office Private
Office General
Office Computer
Hospital Rooms
Hospital Operating Rooms, Wards
Hospital Public Spaces
Apartment, Buildings, Hotel Rooms
Hotels, Ballrooms, Bank Halls
Hotel Public Spaces
Kitchens, Laundries, Garages
Recommended Noise Criteria
�������G��3�
�'�� D4�APPLICATIONAVERAGE(NC)
(NC)
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Ng
JW
Nj
Nj
NW
Sj
Nj
NW
NW
Sj
Wj
JJ
JJ
Jh
NJ
JW
NW
Sj
Sj
NW
Sj
Sj
SW
Sj
Sj
SW
SW
NW
Sj
Wj
SW
gj
gW
NW
NW
Sj
SW
25
30
22
22
27
32
25
35
40
40
35
40
40
45
40
40
45
45
35
40
50
45
60
65
30
35
35
40
50
30
35
40
35
35
40
45
���)��*� ���&74���^��Recommended delivery Velocities
����� ���&74���^��
���)��*
(m/s)
APPLICATION
Recommendeddelivery
Velocities(m/s)
Quantity Imperial Unit Metric UnitForm Imperial
To MetricMultiply By:
Form MetricTo ImperialMultiply By:
���. ��@���"$�Y���)Conversion Table
?bW���JbW
JbW���NbW
JbW���SbW
NbW���WbW
SbW���g
W���?j
1.5 - 2.5
2.5 - 3.5
2.5 - 4.5
3.5 - 5.5
4.5 - 6
5 - 10
=6�� ������3�
G"X��� �'� ������3�
H�R��� ��:F���8;�P&�� ��:F��
M��� ���k�������-�6��3�
��:F����8@3��� ���I�$ ��8-�<P�� ���-�*�8��-�V$���T
�)�P������-�3���V4��8'�1*��$�9��8�$r$
��*� mp� ��&F���8��53��8��- ��3���8y�D���$�9�
��V^� ��&F����
���-�*���I�8�$�4����� ��I�$ �8����� �
����O+��9��
��x ����8���������8�#��3��;�C-�*���
���9��$�9���
Broadcasting studios, Sound and
recording studios.
Concert halls, Auditoriums, Library,
Classrooms
Large offices, Restaurants, Hotels
Dining rooms, Public buildings
Corridors, Computer-rooms, Cafeterias
Department stores
Average factories, Workshops, Garages
Warehouses
Apartments, Residences, Hotel rooms
Theatres, Private offices, Hospitals, Mosques
square foot
square inch
square metre
square milimetre
0.0929
645.16
10.764
0.00155
(m )
(mm )
2
2
3
3
Area
Density
Length
Pressure
Temperature
Velocity
Volume
(flow)
inch
foot
foot
yard
milimetre
milimetre
metre
metre
25.4
304.8
0.3048
0.9144
0.0394
0.00328
3.2808
1.0938
(mm)
(mm)
(m)
(m)
inch of water column
foot of water column
inch of mercury column
ounces per square inch
pounds per square inch
Kilopascal
Kilopascal
Kilopascal
Kilopascal
Kilopascal
0.2486
2.9837
3.3741
0.4309
6.8948
4.0219
0.3252
0.2964
2.3206
0.145
(kPa)
(kPa)
(kPa)
(kPa)
(kPa)
fahrenheit celcius 5/9 ( F-32) (9/5 C)+32( C)
feet per second
feet per minute
miles per hour
metres per second
metres per second
metres per second
0.3048
0.00508
0.44704
3.2808
196.85
2.2369
(m/s)
(m/s)
(m/s)
cubic feet per minute
cubic feet per minute
cubic feet per hour
galons per minute
galons per minute
liters per second
cubic metres per second
milliliters per second
liters per second
liters per second
0.4719
0.0004719
7.8658
0.6309
0.7577
2.119
2119.0
0.127133
15.850
13.198
(L/s)
(m /s)
(ml/s)
(L/s)
(L/s)
(cfm)
(cfm)
(cfh)
(U.S.)
(imperial)
(fps)
(fpm)
(mph)
pounds per cubic foot kilograms per cubic metre 16.018 0.0624(kg/m )
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHINh
z ���{��"P-
,�+�����������<"+�!�$� ����e�^��"P-
z]���
���3- �&4s
�4P�
�����"F�����������&4s�����"F�:4�� ��V^��5'�9
,�+�����;�9��(P.���� ��� ����\����$��
;� �.��)���Kk3* ����^���8���$���Y�/����]����� ���
,��� ��O3P��n�$ � ������9� ���:4�
&9�;�.k#'
z)��*�c#���|#� (A )
��� ��� ����\���"^���)������+����������H���.�P�
�%) ���)��*���^�����A )��*���^������ �#�-V
������8��+������+� �4��R �- �"��&����O3���G��$�>��+
,��4���� �I����3�
�"��Q� CFM 3P���� �4��R �- ���Q-��� �4��R �- ��#�-
,���V-�d67�� ��U4I����+
k
k
k kCFM=A x V
The area of grille utilized by the air stream at
the point of the outlet velocity, V (See
outlet velocity) as measured with an
appropriate meter.CFM=A x V
The point of measurement and type of
meter must be defined to accurately
determine CFM.
k
k
k k
Outlet Area (A ):
TERMINOLOGY
Aspect Ratio:
The ratio of width to height of the grille core.
Drop:
The vertical distance in feet between the
lower edge of a grille and the lower edge of
the air stream at the end of its throw.Drop is
affected by the lenght of throw, the velocity
and the temperature differential between the
supply and room air.
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI NZ
z��}��c#���|#� (A )
���"^���)������ ��������H��d�F�*�|#��:���3<���
� ���I�����3� ��������������4P��U���/�R � ���� ������\
,��4��
�^����� ���9�����^����~� �.��"���Q����)�|#��:��
,��+�����3� �������R � �����"^
��+� ���4��R ���- ��^��������������8��������������374����
�)��*�c#���|#��Y���%�����3+ ��O3P�� �#�-
,��
EE
The smallest net area of a grille utilized by
the air stream in passing through the grille
passages.It determines the maximum or jet velocity of
the air in the grille. In many grilles, theA occurs at the velocity measuring point
and is equal to the outlet area,A
Effective area (A ):
A
A
E
E
K
K
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHINi
z�H4$�3� ���79 ( )P
d�67��EC.�H�� �������LT�f&� �(P.������"~����79
����5�������'���16����+��. �/�BR �F�������� ����� ��
,�� ����)�������
S
z�3^�����79 (P )
EC.�H��� ������LT�f&� �(P.�����3^���Y��%����79
,�� ����)��������H� ����d67�����5����
v
The compressive pressure in inches of H O
that exists in the grille collar area at a given
air volume with or without specific
designated accessories.
2
sStatic Pressure (P ):
The pressure in inches of H O equated to a
velocity that exists for a given air volume in
the grille collar area.
V
2
Velocity Pressure (P ):
The maximum total width in feet of the air
pattern at the point of terminal velocity.
Air Spread :
The distance in feet from a grille or
designated location to a point where the
motion of the air stream is reduced to a
given terminal velocity (V )T
Throw (T) :
The measured velocity at a stated point with
a specified meter. The rated outlet velocity is
typically an average of several prescribed
velocity measurements.CFM =A x V (see outletArea)
K
k k
Outlet Velocity (V ):
z ���=6�
��#�-����;�9�(P�.���� ��� �����\5��e��^��~� �.
,�+������+� �4��R �- ����-��^�����
z����$�� (T)
(�P.�����#�-�H���R ��5%��@Q��������������H���5�'�9
�^����������4����$� ��� ����\����.��� �+����;�9
,�&��� �4��=��� 167����-(V )T
z�)��*��^�� (V )
H��G���$ �#�-��H��������+� �4��R ��- ��^��:4%�
,�+����q�16� ��O�3��
� ��%$�G����3���8Y� ��3��;��1����)���*��^���v���-
,�+������+� �4��R� �- �:4%� �^��
>��+��%) ���)��*�c#���|#����Ak k
k
CFM = A x V
z�@���79 (P )
�� �3^��������7�9�� H�4$�3� ���79�!�VC�(P ) (P )
,�� ����)�������������5�����d67�� ���EC.�H�� ��
T
SVThe sum of the static pressure (P ) and the
velocity pressure (P ) that exists in the grille
collar for a given air volume.
T
S
V
Total Pressure (P ):
������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Sj
z �'�;��I�|#� (L )
z �'���79�|#� (L )
z��+�Y�o+ ���R
G� ��+�H���Q$��������H��G��$���+��4F��$�@�� �'
��O3���H�������+�Y�o+ �n�$ ����=���RT�n�$ ���� �'���79
�4��R �- ������<4��jbjjjJ� �&"����� �'�|#�� �4��R �-
,��+�
��&&��D4F�-T�H��������3� � ���-�������� �:<V�� �'���79
����3� � ����-���B�V$����@�� �'����79��������3� � ����-��
,�-�+� �4��R �-
���3� � ����-���w-����9�=���������������Y��.�����q��*
,�+����n�$ �q�16��H43���T���+�Lm)������� �#� ��
,�+���; ��?j������?j���:4��3P����v�-� �&"�
����Q������� ���+�����$� �[9�H��R �85* ��3.�P�
\����;�9�g��$�n��$ � ���� ����B�V$���&� �g�!�$� �R ��T
,�+���:4�R�|#�
W
P
W
P
The total sound created by a grille under a
specific condition of opreation not including
specific room acoustic absorption value
reductions per frequency octave bounds.
The basis of rating must be stated re
10 watts, or 10 watts.
The sound pressure measured in the test
room or occupied room with a sound level
meter referenced to 0.0002 microbar.Sound pressure may be measured in octove
bands with an octave band analyzer or total
sound pressure in all octave bands can be
measured.
That interior area of a conditioned space
which extends to within 6 inches of all room
walls and to a height of 6 feet above the
floor.
Sound Power Level (L ):
Sound Pressure Level (L ):
Occupied zone:
-12 -13
u?Ju?N
A grille sound rating in pressure level at a
given condition of operation , based on
established criteria and a specific room
acoustic absorption value. Catalog NC
ratings are based on sound power level (LW)
minus an 18db room attenuation all octave
bands.
Noise Criteria (NC) : z� �'�� D4� (NC)
���G� �+�H���Q$���79�|#��(P.���������� �'�v�-
� ������ � �� ���I�� D��4���������+����167������Y��.
,�� �O3P��n�$ �q�16��H43��� Lm)
?Z� ��&� �'�;��I�|#����� �'�� D4��v�-�������(LW)
,�� ��O3P����3� � ���-���B�V$����n�$ ��� =����@����T
The velocity in f.p.m. of the air stream at the
end of the throw (T) from the grille or a
designated point.
TTerminal Velocity (V ): z����-��^�� (V )
H�����������R ����$����4P�� ��3- ���� ��� ����\���^��
,�+������4I�����;�9�(P.����167���#�-
T
AHMAD SHAHROKHI was born in 1932 and began working in Sholeh Khavar Company in 1950. At that time, Iranian Industry was very young and most of the industrial parts and equipment were imported from foreign countries and Sholeh Khavar Company, active in the field of installation industry, was of no exception to this rule, thus it imported the air adjustable grilles required for its projects from USA supplied by T&B American Company.In 1951, a cargo ordered by Sholeh Khavar was sent by T&B Company for the said Company transported by vessel. this vessel broke down in a fire accident while in its way and therefore caused the Company to encunter problems in meeting its obligations. Thereupon, Ahmad Shahrokhi , assisted by financial support of the Company`s authorities, began sampling and manufacturing grilles from foreign models and was able to put into operation the production line of air adjustable grilles within a period of six months.Since then, being half a century, this Company has improved its quality and quantity day by and is proud to announce that on its 50 anniversary of its establishment, has proceeded in publishing the most comprehensive technical catalogue of its various products together with a CD of the computations.