circular ducts 2014 -...

DUCT VENTILATION AIR CONDITIONING Co. (W.L.L.)

Spiral Circular Ducts

SPIRAL CIRCULAR DUCTS


DOHA- QATAR - PHONE: +974-44500118 - +974-44500119 - FAX: +974-44500117

DVAC, One Of The Premium Workshops Specialized in Duct Fabrication

has Executed Several Projects

(Residential, Governmental, Commercial, Industrial & Institutional).

2

Spiral Circular Ducts



3

Table of Contents:

Circular Ducts: Single Wall

Duct Support ........................................................................ 31

;Circular Ducts Single Wall:Page

............................................................................Tolerance . 5

.............................................................................Materials . 6-7

...........................................................................SI System . 8---11

.............................................................................Pressure . 12---15

......................................................Pressure Drop Diagram . 16---18

.........................................................Method of Installation . 19

........................................Thickness Schedule - For Fittings 20

..................................DVAC Standard Specs. - Spiral Tube 21

............................DVAC Standard Specs. - Grooved Seam 22

Fittings 23

Accessories

BFL15 BFLCSDS RCLL CLL RSB 22.5° °

° ° ° °30 45 60 90BFL BFL BFL BFL 24

TSB 2SB90 BFLB90 CO TCL XCL° ° 25

TCL45 TCCL45 RT45 RCT45 TY45 STO° ° ° ° ° 26

TCPL TC RSWP RCSWP RSP CSF 27

CS B90° B60° B45° CSP CBP 28

ECM ECF MC FC CAF CFF 29

CWC RC JC SDT 30



4

Table of Contents:

Double WallCircular Ducts:

33

32

37

..................................DVAC Standard Specs. - Spiral Tube

.........................................................Method Of Installation.

Fittings

° ° ° °30 45 60 90BFL BFL BFL BFL

TSB 2SB90 BFLB90 CO TCL XCL° °

TCL45 TCCL45 RT45 RCT45 TY45 STO° ° ° ° °

38

39

Circular Ducts Double Wall:

41

36

.......................................Thickness Schedule - For Fittings

............................DVAC Standard Specs. - Grooved Seam

34

35

BFL15 BFLCSDS RCLL CLL RSB 22.5° °

TCPL TC RSWP RCSWP RSP CSF

CS B90° B60° B45° CSP CBP

40

Page

42ECM ECF MC FC CAF CFF



Tolerance

α Tolerance

± 2o

ΦD, D , D , D , D1 2 3 4

nomTolerance

rangeLi

nom

100125140

98,8 - 99,3123,8 - 124,3138.7 - 139.3

505050

150160180

148,7 - 149,3158,7 - 159,3178,6 - 179,3

505050

200224250

198,6 - 199,3222,5 - 223,3248,5 - 249,3

505050

280300315

278,4 - 279,3298,4 - 299,3313,4 - 314,3

505050

355400450

353,3 - 354,3398,3 - 399,3448,2 - 449,3

505050

500550560

498,2 - 499,3548,1 - 549,3558,1 - 559,3

505050

600630650

598,1 - 599,3628,1 - 629,3648,1 - 649,3

505050

710750800

708,0 - 709,3748,0 - 749,3798,0 - 799,3

505050

850900950

848,0 - 849,3897,9 - 899,3947,9 - 949,3

505050

100010501100

997,9 - 999,31047,9 - 1049,31097,9 - 1099,3

505050

112011501200

1117,8 - 1119,31147,8 - 1149,31197,8 - 1199,3

505050

125013001350

1247,8 - 1249,31297,8 - 1299,31347,8 - 1349,3

505050

140014501500

1397,3 - 1398,81447,3 - 1448,81497,3 - 1498,8

100100100

160018002000

1596,5 - 1598,21796,5 - 1798,21996,5 - 1998,2

100100100

23002500

2294,5 - 2298,02491,5 - 2497,5

100100

Weight

± 10%

Sheet metal thickness

As in sheet metal standardEN 10143:1993

L, L , L , etc1 3 Tolerance

0 - 15+0-2

16 - 100+0-5

101 -+0-10

L ±5

AngleLength

ΦDnom

Tolerancerange

100125140

100,0 - 100,5125,0 - 125,5140,0 - 140,6

150160180

150,0 - 150,6160,0 - 160,6180,0 - 180,7

200224250

200,0 - 200,7224,0 - 224,8250,0 - 250,8

280300315

280,0 - 280,9300,0 - 300,9315,0 - 315,9

355400450

355,0 - 356,0400,0 - 401,0450,0 - 451,1

500550560

500,0 - 501,1550,0 - 551,2560,0 - 561,2

600630650

600,0 - 601,2630,0 - 631,2650,0 - 651,2

710750800

710,0 - 711,6750,0 - 751,6800,0 - 801,6

850900950

850,0 - 851,6900,0 - 902,0950,0 - 952,0

100010501100

1000,0 - 1002,01050,0 - 1052,51100,0 - 1102,5

112011501200

1120,0 - 1122,51150,0 - 1152,51200,0 - 1202,5

125013001350

1250,0 - 1252,51300,0 - 1302,51350,0 - 1352,5

140014501500

1400,0 - 1402,51450,0 - 1452,81500,0 - 1502,9

160018002000

1600,0 - 1603,11800,0 - 1803,32000,0 - 2003,5

23002500

2300,0 - 2304,02500,0 - 2505,0

Ducts: Fittings:

* Materials Used for Ductworks :-Galvanized Steel: (Standard) L.F.Q. Complying with ASTM A653 and Having G90 Coating Designation.

- Stainless Steel : (Optional) Complying with ASTM A240M / A480M, Grade 304, 304L, 316 & 316L.

- Aluminum Metal: (Optional) Complying with ASTM B209, Alloy 3003, Temper H14.

According to EN 1506 According to EN 1506

5

iL

D

D

L

Circular Ducts:



Sheet Metal Grade: Material:

Fittings and ducts in the standard DVAC range aremade from hot dip galvanized steel sheet with a yieldpoint in tension of 200 N/nm and a zinc coating shall

2

at least comply with Z 275.

Surface treatment of class Z 275 means 275g zinc/m ,2

double sided. Z 275 thus specifies the total amountof zinc on both sides of a 1m sheet.

2

The thickness can thus be calculated as follows:

Sheet Metal Thicknesses

Other thicknesses of sheet metal can be suppliedby DVAC. You will have to expect some changesto the product range, however.

For example, an increase in thickness in the ductsof 0.5mm means the internal diameter fails by 1.0mmwhich means in turn that standard fittings do not fit,and will have to be specially made for these ducts.

* The following material is used by DVACin the standard range:

* Ducts and hand made fittings are made with material toEN 10142 - Fe PO2 G Z 275 MA-C

* Pressed fittings are made with material toEN 10142 - Fe PO2 G Z 275 MA-C andEN 10142 - Fe PO6 G Z 275 MB-C

Other materials can also be supplied, for example:

to EN 14436 or AISI 316* Stainless steelor EN 1.4301 or AISI 304.Some fittings which are normally pressed have to behand made and swaged together.

* Aluminum to ISO/DIS 209-1.Some fittings which are normally pressed have to behand made and swaged together.

* Plastic coated products:Ducts made from “Plastisol” as standard, i.e. hot dipgalvanized steel sheet Z 275 with an internal andexternal coating, 100μm thick of polyvinyl chloride (PVC).

Fittings are made, as standard, from hot dip galvanizedsteel sheet Z 275 and then powder coated internallyand externally with a mixed powder consisting of epoxyand polyester (PE) to a thickness of 80μm.

Ducts can also be supplied with an optional coatingof epoxy +PE. This can be done either both internallyand externally, or only on the inside or outside.Powder-coated ducts eliminate the risk of differingshades in color between ducts and fittings.

Standard colors are white NCS S0502-Y30 gloss unitaccording to Gardner 60 & brown NCS S7010-Y70R

o

45 gloss units.

For ducts of Φ<100, the maximum lengthNOTE:is 1.5m for internal coating.

Fittings can optionally be coated on only the insideor outside. Powder coating can be optionally obtainedin thicknesses of up to 200μm.

with surface treatment to AZ 185 means 185g* Aluzinkaluzink/m double sided.

2

Some fittings which are normally pressed have to befabricated and swaged together.

Zinc Thickness =

Zinc weight

no. of sides x zinc density

=0,275

2.7140* 10 = 19μm

6




6

Materials

Circular Ducts:



Temperature limits for our materials:

The shadow fields denotes standard versions.

Product Material/type

Operation

Continual Intermittent

Temperature limit

minoC

maxoC

minoC

maxoC

Pressed and seams welded

Galvanized steel sheet metal 2001

2502

Aluminum sheet metal 2003

300

Stainless sheet metal 500 700

PVC coated sheet steel metal 80 120

PE-/EP coated products 150 200

Swaged, spot welded and/orblind interlocked joint

Aluzink sheet metal 315

Mastic -40 70

Safe gasket and damperblade seal

EPDM rubber -30 100 -50 120

Silicone rubber -70 150 -90 200

Foam rubber seal EPDM rubber -30 100 -50 120

Foam plastic gasket Polyester -40 70

Damper shaft bearingPolyamide -30 150 -50 200

Brass 300

Damper actuatorElectric -30 50

Pneumatic -5 60

Duct filter Polyester 120

Drain hoseEthylene vinyl acetate andpolyethylene

-45 65

InsulationGlass wool 200

Rock wool 700

Silencer Polyester 130 180

1 Discoloration occurs at about 200 C in galvanized steel. This is mostly an appearance problem and does not meano

impaired corrosion protection in a normal environment.

2 If temperature rises to about 200 C, the adhesion of the zinc is impaired which means poorer corrosion protection.o

3 Aluminum sheet will soften after a couple of years at 200 C°

ML = 150 - 200 Co o




7

Materials

Circular Ducts:



Units

The SI System (Système International d’Unités) is used in this catalogue in accordance with internationalpractice. Units may be given in the “technical system” in diagrams and tables, in parallel with the SI System.

Some Basic units

For Length metre m

For Mass kilogramme kg

For Time second s

For Electric Current ampere A

For Temperature kelvin K

Some Derived units

For Frequency hertz Hz 1 Hz = 1/s

For Force newton N 1 N = 1 kg*m/s2

For Pressure, Mechanical stress pascal Pa 1 Pa = 1 N/m2

For Energy, work joule J 1 J = 1N*m

For Power watt W 1 W = 1J/s

For Electric Potential, Electric tension volt V 1 V = 1 W/A

Some Additional units

For Timeminutehour

minh

1 min = 60 s1 h = 3600s = 60min

For Flat Angles degreeo

1 = 1/360 of a circleo

For Volume litre l 1 l = 1 000 cm = 1dm3 3

Some Multiple prefixes

Index Designation Des. Example

1012

tera T 1 terajoule 1 TJ

109

giga G 1 gigawatt 1 GW

106

mega M 1 megavolt 1 MV

103

kilo k 1 kilometre 1 km

102

hecto h 1 hectogramme 1 hg

101

deca da 1 decalumen 1 dalm

10-1

deci d 1 decimetre 1 dm

10-2

centi cm 1 centimetre 1 cm

10-3

milli m 1 milligramme 1 mg

10-6

micro μ 1 micrometre 1 μm

10-9

nano n 1 nanohenry 1 nH

10-12

pico p 1 picofarad 1 pF




8

The SI System

Circular Ducts:



Conversion factors

Tables for conversion to other dimensions are given for some of the units commonly used in the industry.

Pressure, p

PapascalN/m

2

mm wcmm Aqmm H 02

mm Hg(at 20 C)

o

in wg“ wgin wc

psi(g)ibf/in

2bar

19,79

133249

6 895100 000

0,1021

13,625,4

70410 215

0,007 530,073 711,87

51,9753

0,004 020,039 40,5341

27,7402

0,000 1450,001 420,019 30,036 11

14,5

0,000 010 00,000 097 90,001 330,002 490,068 91

Length, l

ininch

ftfoot

ydyard

mmetre

mile

112,036,039,4

63 360

0,083 313,003,28

5 280

0,027 80,33311,09

1 760

0,025 40,3050,9141

1 609

0,000 015 80,000 1890,000 5680,000 6211

Area, A

in2

sq inft

2

sq ftyd

2

sq ydm

2

sq metrear

hahectare

1144

1 2961 550

155 00015 500 031

0,006 9419,00

10,81 076

107 639

0,000 7720,11111,20

12011 960

0,000 6450,092 90,8361

10010 000

0,000 006 450,000 9290,008 360,011

100

0,000 000 064 50,000 009 290,000 083 60,000 1000,010 01

Volume, V

in3

cu inl

litreUS galgallon

UK galgallon

ft3

cu ftyd

3

cu yardm

3

cubic metre

161,0

231277

1 72846 65661 024

0,016 413,794,55

28,3765

1 000

0,004 330,26411,207,48

202264

0,003 600,2200,83316,23

168220

0,000 5790,035 30,1340,1611

27,035,3

0,000 021 40,001 310,004 950,005 950,037 011,31

0,000 016 40,001 000,003 790,004 550,028 30,7651

Velocity, v

ft/minfpm

km/hBz

ft/smile/hour

mphknotkn

m/s

154,760,088,0

101197

0,018 311,101,611,853,60

0,016 70,91111,471,693,28

0,011 40,6210,68211,152,24

0,009 870,5400,5920,86911,94

0,005 080,2780,3050,4470,5141




9

The SI System

Circular Ducts:



Conversion factors

Volume flow, qv

ft /h3

cfhl/min m /h

3 ft /min3

cfml/s m /s

3

12,12

35,360,0

127127 133

0,4721

16,728,360

60 000

0,028 30,06011,703,6

3 600

0,016 70,035 30,58912,12

2 119

0,007 870,016 70,2780,4721

1 000

0,000 007 870,000 016 70,000 2780,000 4720,001 001

Mass, m

ozounce

lbpound

kgkilogramme

116,035,3

0,062 512,20

0,028 30,4541

Mass flow, qm

lb/min kg/s

1132

0,007 561

Density, ρ

kg/m3

lb/ft3

g /cm3

lb/in3

116.0

1 00027 680

0,062 41

62,41 728

0,001 000,016 01

27,7

0,000 036 10,000 5790,036 11

Force, F

Nnewton

lbfpound-force

kpkilopound

14,459,81

0,22512,20

0,1020,4541

Torque, M

lbf.in Nm lbf.ft kpm

18,85

12,086,8

0,11311,369,81

0,083 30,73817,23

0,011 50,1020,1381

Energy, work, E

Jjoule

Nm, Ws

BtuBritish thermal unit

kcalkilocalorie

kWh

11 0554 187

3 600 000

0,000 94813,97

3 412

0,000 2390,2521

860

0,000 000 2780,000 2930,001 161




10

The SI System

Circular Ducts:



Power, P

Btu/hW

wattNm/s, J/s kcal/h

hkmetric

horsepower

hpUK, US

horsepower

13,413,97

2 5102 544

0,29311,16

735746

0,2520,8601

632641

0,000 3980,000 360,001 5811,01

0,000 3930,001 340,001 560,9861

Temperature difference, temperature change, ;Δ for K Δ ϑ for CTo

Kkelvin

oF

degree Fahrenheit

oC

degree Celcius

10,5561,00

1,8011,80

1,000,5561

Associated temperatures

KoF

oC Physical state

0,00255273293311373

-4600,00

32,068,0

100212

-273-17,8

0,0020,037,8

100

Absolute zeroMixture of sal-ammoniac and snowMelting point of iceStandard atmospheric temperatureNormal temperature of human bodyBoiling point of water

Conversion between temperatureso o oC = ( F - 32) x 5/9 C = K - 273,15

F = C x 9/5 + 32 K = C + 273,15o o o

Greek letters

Greek letters are used in technical and scientific text to denote physical units.Minor variations in the shapes of the letters can be tolerated, on condition that this does not causeany risk of confusion.

Name Lower case Upper case Name Lower case Upper case

alphabetagammadeltaepsilonzetaetathetaiotakappalambdamy

αβγδεζηϑικλμ

ΑΒΓΔΕΖΗθΙΚΛΜ

nyksiomikronpirosigmatauypsilonfikipsiomega

νξοπρστυφχψω

ΝΞΟΠΡΣΤΥΦΧΨΩ




Conversion factors

11

The SI System

Circular Ducts:



Total Pressure =

Dynamic Pressure + Static Pressure

The Static Pressure in the atmosphere varieswith the weather - high pressure or low pressure -and with the height above sea level.The standard pressure, atmospheric pressure atsea level is:

101,3 kPa = 1,013 bar = 1013 mbar(= 1 atm = 760mm Hg)

At one particular point, such as in a ventilation duct,the static pressure comes from all sides.

In a ventilation system, the static pressure is relatedto the ambient atmospheric pressure outside theduct system; the static pressure can thus be positive- higher than ambient atmospheric, or negative -lower than ambient atmospheric pressure.

1 m2

101,3 kN

H

L




12

Pressure

Circular Ducts:






Pressure dropIf you produce a static pressure difference in an openduct system, you can get the air to flow from a pointof higher pressure to a point of lower pressure - fromthe atmosphere via the inlet grating to the suction sideof the fan, and from the supply side of the fan via thesupply terminals back to the atmosphere.The pressure difference is converted into kinetic energy.

Dynamic Pressure is a measure of the kinetic energyof the moving air. The connection between pressureand energy is easy to see if you use SI system units.

Pa = N/m² = Nm³ = J/m³ i.e. energy (in J) per unitvolume (in m³) of the flowing air.

The dynamic pressure depends on:

p = . with the unitsd ρ v

2

v

2

_ 2_ 2

kg m kg m² kgm m

m³ s m³ s² s² m³��2

= = = N1 N

m² m²= = Pa.

Flow in a duct system is normally not free of loss.Friction losses occur and the air is forced to changedirection. It requires pressure (i.e. energy) to manageboth dynamic and static pressure - the sum of thesetwo is referred to as total pressure.

p = + pt s dρ

Since p will be negative in relation to atmospherics

pressure (on the suction side of the fan), this meansthat p will also be negative if the total of p and pt s d

is negative.

Pressure drop and flow lossesIn a ventilation system, you want to get air moving!Clean air is to be supplied to the occupancy zone andpolluted air must leave the room, process or machine.Energy is needed to move the air, which is added viathe fan, which gets the air moving.

In order to flow through a duct system, air has toovercome two types of flow resistance or pressure drops:

between the flowing air and the duct walls.* friction losswhen the air changes direction or speed.* single loss

(also known as the R value) is expressedFriction Loss

PS

Pd

in the unit Pa/m p =Δ ρf

where

p = friction loss per metre (Pa/m)Δ f

= friction factor related to duct material and surfaceλroughnessd = hydraulic diameter of the duct, the diameter ofh

a circular duct which gives the same friction pressure dropat the same flow velocity as a rectangular duct

2 * a * ba + b

where a and b are the duct sidesFor a circular duct, d = dh

= air density (kg/m )ρ3

= average velocity of air (m/s)v

dh =

13

Pressure

. . .

v

2

v

2

_ 2_ 2λ

dh.

Circular Ducts:






Pressure drop calculation.

Fan Pressure Capacity Required

Let us do a pressure drop calculation for a simpleduct system!

• Number the fittings, in the directionof air flow.

• Then put the dimension and dataof each component in a tableas in the example.

• Read the pressure drop fromthe graph for each component.You can follow this example fromthe reduced scale graphs below.

No Flowl/s

ComponentDenom.

DimensionΦ mm

Lengthm

PressuredropPa/m

PressuredropPa

1 500 RCCLL 500-315 4,5

2 500 BFL45O

315 4,0

3 500 SR 315 1.2 1,5 1,8

4 500 BFL45O

315 4,0

5 500 SR 315 2,2 1,5 3,3

6 500 BFL90O

315 8,0

7 500 SR 250 7,5 1,5 11,3

8 500 BFL90O

250 8,0

9 500 SR 250 2,5 1,5 3,8

10 500 RCLL 315-250 11,0

11 500 SR 315 2 5 10,0

Total pressure drop (sum of rows 1 -11) = 69,6

Add up the pressure drops on the far right of the table.Then select a suitable fan which gives the required flowq= 500 l/s and a total pressure rise of p = 125 Pa.t

14

11

9

10

8

5

76

4

32

1

RCLL• BFL45°•

BFL90°• • SR

Pressure

100

5

10

50

Pre

ssure

dro

p D

pt

100-8

0125-1

00

160-1

25

200-1

60

250-2

00

315-2

50

400-3

15

500-4

00

630-5

00

800-6

30

1000-8

00

1250-1

000Velo

city

in b

ig e

nd

v [m

/s]

3

2

4

5

6789

[Pa]

Dimension øø

[mm]

DD

12

1

5010 100 500 1000 5000 10000 [l/s]

50 100 500 1000 5000 10000 [m³/h]

Flow q

500 1000 5000 10000

100 500 1000 5000 10000 [l/s]

[m³/h]

Flow q

0.5

1

10

50 250 315 400 500 630

Pre

ssure

dro

ppt [P

a]

Δ

1000

800

1250

5

1000

500 1000 5000 10000

100 500 1000 5000 10000

5

10

50

100

[l/s]

[m /h]³

Flow q

250 315 400 500 630

800

1250

Pre

ssure

dro

ppt [P

a]

Δ

1

Dimension ød [mm]

Vel

ocity

v [m

/s] 63

8010

012

516

020

025

031

540

050

063

080

010

001250

2015

10

54

3

2

200

100

50

10

5

1

0.5

0.1

0.05

0.02

[Pa/m]

5 10 50 500 1000 500010000 50000

Specifi

c p

ressure

dro

pΔ

pt

1000005000010000500010001005010

100 [I/s]

[m³/h]

5

6

78910

15

100

5

10

50

[Pa]

Pre

ssure

dro

p D

pt

Velo

city

in s

mall

end

v [m

/s]

125-8

0160-1

00

200-1

25

315-2

00

400-2

50

500-3

15

630-4

00

800-5

00

250-1

60

1000-6

30

1250-8

00

Dimension øø

[mm]

DD

12

1

5010 100 500 1000 5000 10000 [l/s]

[m /h]³50 100 500 1000 5000 10000

Flow q

1 sdimension step•

RCLL•


8

4

1.5

4.5

11

Flow q Flow q

Circular Ducts:



Prerequisites

In order to correctly dimension a duct system, you needinformation about the total pressure drops of the fittings.

The total pressure drop p (Pa) between two sections,Δ t

1 and 2, in a duct system is defined by:

p = p - p = (p +p ) - (p +p )t t1 t2 s1 d1 s2 d2

Ac1

1V

s1p

Ac2

2V

s2p

where p =d ρ * v / 2 and = q / A2

v c

It is assumed in pressure drop calculation of ventilationducts that:

• incompressible flow, i.e. air density does not change,

• isothermal relationship, i.e. no exchange of heatbetween the duct and its surroundings occurs,

• no changes in potential energy, i.e. height differencesbetween the various sections of the duct systemare neglected.

The total pressure drops for the most common fittingsare shown in graphs, as a function of air flow(or velocity in some cases).

The basic data for the graphs comes from measurementsand calculations done at our laboratories.Some graphs are taken from litterature.

The graphs apply to air under standard conditions.

V = 15,1 · 10 m /s-6 2

= 20°Cϑ= 1,2kg/mρ

3

= 65%φpA = 1013,2 mbar

ρFor air of other density ( ) the flow (q )other other_density

is obtained from the formula


- Stainless Steel :

- Aluminum Metal:

(Optional) Complying with ASTM A240M / A480M, Grade 304, 304L, 316 & 316L.

(Optional) Complying with ASTM B209, Alloy 3003, Temper H14.

15

Pressure

Section 1 Section 2

Designations used

labrd

dh

AcPAPsPd

PtΔPΔPtϑv

qραφ

λRζv

= length= long side= short side= radius= diameter

= hydraulic diameter= cross sectional area= atmospheric pressure= static pressure= dynamic pressure

= total pressure= pressure drop= total pressure drop= temperature= air velocity (average)

= air flow= density= angle= relative humidity

= friction number= coefficient of friction= resistance number= kinematic viscosity

m (mm)m (mm)m (mm)m (mm)m (mm)

m (mm)m

2

mbarPaPa

PaPaPaoC

m/s

m³/skg/m³°%

Pa/m

m²/s

Circular Ducts:






Spiral Tube

16

Dimension ø[mm]

D

Vel

ocity

v [m

/s]

63

80

100

125

160

200

250

315

400

500

630

800

1000

1250

20

15

10

5

4

3

2

200

100

50

10

5

1

0.5

0.1

0.05

0.02

[Pa/m]

5 10 50 500 1000 5000 10000 50000

Specifi

c p

ressure

dro

pΔ

pt

1000005000010000500010001005010

Flow q

100 [I/s]

[m³/h]

100

5

10

50

Pre

ssure

dro

p D

pt

100-8

0125-1

00

160-1

25

200-1

60

250-2

00

315-2

50

400-3

15

500-4

00

630-5

00

800-6

30

1000-8

00

1250-1

000Velo

city

in b

ig e

nd

v [m

/s]

3

2

4

5

6789

[Pa]

Dimension øø

[mm]

DD

1

2

15010 100 500 1000 5000 10000 [l/s]

50 100 500 1000 5000 10000 [m³/h]

Flow q

Technical Data•

RCLL•

Technical Data•

SR•

Concentric Reducer


D

1D

L

D2

Pressure Drop Diagram

Circular Ducts:






17

R=D

10 50 100 500 1000 3000

50 100 500 1000 5000 10000

[l/s]

[m /h]³

63 80 100 125 160 200

0 2.

0 5.

01

10

20

Flow q

Pre

ssure

dro

ppt

[Pa]

Δ

Dimension ø [mm]D

5

Bend °- ockseamed15 L

BFL15°•

Technical Data•

Technical Data•

Concentric Reducer


10

500 1000 5000 10000

100 500 1000 5000 10000 [l/s]

[m³/h]

Flow q

0 3.

0 5.

1

5

30 250 315 400 500 630

Dimension ø [mm]D

Pre

ssure

dro

ppt [P

a]

Δ

1000

800

1250

Technical Data•

R=D

BFL30°•

5

6

78910

15

100

5

10

50

[Pa]

Pre

ssu

re d

rop

D

pt

Velo

city

in s

mall

end

v [m

/s]

125-8

0160-1

00

200-1

25

315-2

00

400-2

50

500-3

15

630-4

00

800-5

00

250-1

60

1000-6

30

1250-8

00

Dimension øø

[mm]

DD1

2

1

5010 100 500 1000 5000 10000 [l/s]

[m /h]³50 100 500 1000 5000 10000

Flow q

RCLL•


D

D

1D 2D

L


Circular Ducts:






18


BFL45°•


0.5

1

10

50 250 315 400 500 630

Dimension ø [mm]D

Pre

ssu

re d

rop

pt

[Pa

]Δ

1000

800

1250

Technical Data•

5R=D


5

10

50

0 7.

1

70 250 315 400 500 630

Dimension ø [mm]D

1000

800

1250

Pre

ssure

dro

ppt

[Pa]

Δ

Technical Data•

BFL60°•

R=D

Technical Data•

BFL90°•

1000

500 1000 5000 10000

100 500 1000 5000 10000

5

10

50

100

[l/s]

[m /h]³Flow q

250 315 400 500 630

800

1250

Pre

ssure

dro

ppt [P

a]

Δ

Dimension ø [mm]D

1

R=D

500 1000 5000 10000 [m /h]³Flow q

500 1000 5000 10000 [m /h]³Flow q

100 500 1000 5000 10000 [l/s]

100 500 1000 5000 10000 [l/s]

D

D

D


Circular Ducts:






19

METHOD OF INSTALLATION - SPIRAL

1

2

4 3

7 6

5 8

Installation ofSlip Joint Connector

Screw or RivetPlacement Sequence

Installation of Pipe and Fittings

Single Wall – Slip Fit

The fittings are male sized to slip into the pipe section.

A good tight fit is necessary for minimizing friction loss

and good sealing.

Care should be taken during handling to avoid any dents

or distortions that can cause improper fit and difficult installation.

Steps to be followed:

1. Bring the bottom of the fitting collar into the Inner Spiral

Duct at a slight angle.

2. Work the rest of the Collar into the Spiral Duct.

3. When the Inner Collar is fully inserted, start the Outer Collar

in the same way.

4. Carefully work the rest of the Collar into the Spiral Duct

until approximate 20mm of the collar, that remains exposed

between the end of the Spiral Duct and the stop bead of the

fitting collar.

Do not use a screwdriver or knife to help make the connection.

Apply pressure with the heal of your hand or with your fist

to help slip the fitting into the Duct.

5. Apply Duct sealer to this exposed area.

6. Push the fitting into the Spiral Duct until the stop bead meets

the edge of the Spiral Duct.

7. Fasten the fitting into the Spiral Duct with screws or rivets

as per the chart at right. The screws or rivets should be

evenly spaced around the perimeter of the connection,

approximate 15mm back from the stop bead. Placement

of the screws or rivets should be opposite to each other

as demonstrated in the diagram.

Method of Installation - Spiral Ducts

Circular Ducts: (Single Wall)






20

Dimensions and Wall Thickness

ΦD, D , D , D , D1 2 3 4

nom(mm)

Circumferenceπd(m)

Circumferenceπd(m)

Li

nom(mm)

Materials Thickness (mm)

GI S 304, 316SS 304, 316S AL

100 0.314 50 0.6 0.6 1.0

125 0.393 50 0.6 0.6 1.0

140 0.440 50 0.6 0.6 1.0

150 0.471 50 0.6 0.6 1.0

160 0.503 50 0.6 0.6 1.0

180 0.565 50 0.6 0.6 1.0

200 0.628 50 0.6 0.6 1.0

224 0.704 50 0.6 0.6 1.0

250 0.785 50 0.6 0.6 1.0

280 0.880 50 0.7 0.7 1.0

300 0.942 50 0.7 0.7 1.0

315 0.990 50 0.7 0.7 1.0

355 1.115 50 0.7 0.7 1.0

400 1.257 50 0.8 0.8 1.0

450 1.414 50 0.8 0.8 1.2

500 1.571 50 0.8 0.8 1.2

550 1.728 50 0.8 0.8 1.2

560 1.759 50 0.8 0.8 1.2

600 1.885 50 0.8 0.8 1.2

630 1.979 50 1.0 1.0 1.2

650 2.042 50 1.0 1.0 1.2

710 2.231 50 1.0 1.0 1.5

750 2.356 50 1.0 1.0 1.5

800 2.513 50 1.0 1.0 1.5

850 2.670 50 1.0 1.0 1.5

900 2.827 50 1.0 1.0 1.5

950 2.985 50 1.0 1.0 2.0

1000 3.142 50 1.0 1.0 2.0

1050 3.299 50 1.0 1.0 2.0

1100 3.456 50 1.0 1.0 2.0

1120 3.519 50 1.2 1.2 2.0

1150 3.613 50 1.2 1.2 2.0

1200 3.770 50 1.2 1.2 2.0

1250 3.927 50 1.2 1.2 2.0

1300 4.084 50 1.2 1.2 2.0

1350 4.241 50 1.2 1.2 2.0

1400 4.398 100 1.2 1.2 2.0

Wall Thickness ScheduleCircular Fittings Duct

• Standard Seam: Stitch WeldedStandard Seam for Aluminum:• CLINCH

• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)

With Outturned Stiffening Corrugation

iLiL

1D2D

L

Li

iL

D

1D

2D

3D

iL

iL L1 2L

Thickness Schedule (For Fittings)




- SMACNA (2nd Edition-1995) See Page 3.4/3.8- SMACNA (3rd Edition-2005) See Page 3.5/3.9

As per:




Spiral Tube• Standard Length: 3000mm

e:Custom Lengths Availabl• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)

* With Outturned Stiffening CorrugationAbove THK 1.5mm


StandardDiameter

(mm)

StandardDiameter

(mm)

Circumferenceπd(m)

Circumferenceπd(m)

Areaπd /4

2

(m )2

Areaπd /4

2

(m )2

Materials Thickness (mm) StandardLength(mm)

StandardLength(mm)GI S 304, 316SS 304, 316S AL

100 0.314 0.008 0.5 0.5 1.0 3000

125 0.393 0.012 0.5 0.5 1.0 3000

140 0.440 0.015 0.5 0.5 1.0 3000

150 0.471 0.018 0.5 0.5 1.0 3000

160 0.503 0.020 0.5 0.5 1.0 3000

180 0.565 0.025 0.5 0.5 1.0 3000

200 0.628 0.031 0.5 0.5 1.0 3000

224 0.704 0.039 0.5 0.5 1.0 3000

250 0.785 0.049 0.5 0.5 1.0 3000

280 0.880 0.062 0.6 0.6 1.0 3000

300* 0.942 0.071 0.6 0.6 1.0 3000

315* 0.990 0.078 0.6 0.6 1.0 3000

355* 1.115 0.099 0.6 0.6 1.0 3000

400* 1.257 0.126 0.7 0.7 1.0 3000

450* 1.414 0.159 0.7 0.7 1.0 3000

500* 1.571 0.196 0.7 0.7 1.0 3000

550* 1.728 0.238 0.7 0.7 1.0 3000

560* 1.759 0.246 0.7 0.7 1.0 3000

600* 1.885 0.283 0.7 0.7 1.0 3000

630* 1.979 0.312 0.8 0.8 1.0 3000

650* 2.042 0.332 0.8 0.8 1.0 3000

710* 2.231 0.392 0.8 0.8 1.2 3000

750* 2.356 0.442 0.8 0.8 1.2 3000

800* 2.513 0.503 0.8 0.8 1.2 3000

850* 2.670 0.567 0.8 0.8 1.2 3000

900* 2.827 0.636 0.8 0.8 1.2 3000

950* 2.985 0.709 0.8 0.8 1.2 3000

1000* 3.142 0.785 0.8 0.8 1.5 3000

1050* 3.299 0.866 0.8 0.8 1.5 3000

1100* 3.456 0.950 0.8 0.8 1.5 3000

1120* 3.519 0.985 1.0 1.0 1.5 3000

1150* 3.613 1.039 1.0 1.0 1.5 3000

1200* 3.770 1.131 1.0 1.0 1.5 3000

1250* 3.927 1.227 1.0 1.0 1.5 3000

1300* 4.084 1.327 1.0 1.0 2.0 3000

1350* 4.241 1.431 1.0 1.0 2.0 3000

1400* 4.398 1.539 1.0 1.0 2.0 3000

1450* 4.555 1.651 1.2 1.2 2.0 3000

1500* 4.712 1.767 1.2 1.2 2.0 3000

1600* 5.027 2.011 1.2 1.2 2.0 3000

1800* 5.655 2.545 1.2 1.2 2.0 3000

2000* 6.283 3.142 1.2 1.2 2.0 3000

2300* 7.226 4.155 1.5N.A. N.A.

3000

2500* 7.854 4.909 2.0 3000

GI SR 200

MaterialCodeDimension D

Ordering example:

* With Outturned Stiffening Corrugation

21

D

D*

D*

L

L

L

DVAC Standard Specifications - Spiral Tube




As per:

CSD•

• L: Standard Length 1220 mm• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)

Circular Straight Duct - Grooved Seam




22



StandardDiameter

(mm)

StandardDiameter

(mm)

Circumferenceπd(m)

Circumferenceπd(m)

Areaπd /4

2

(m )2

Areaπd /4

2

(m )2

Li

nom(mm)


GI S 304, 316SS 304, 316S AL

100 0.314 0.008 50 0.6 0.6 1.0

125 0.393 0.012 50 0.6 0.6 1.0

140 0.440 0.015 50 0.6 0.6 1.0

150 0.471 0.018 50 0.6 0.6 1.0

160 0.503 0.020 50 0.6 0.6 1.0

180 0.565 0.025 50 0.6 0.6 1.0

200 0.628 0.031 50 0.6 0.6 1.0

224 0.704 0.039 50 0.6 0.6 1.0

250 0.785 0.049 50 0.6 0.6 1.0

280 0.880 0.062 50 0.7 0.7 1.0

300 0.942 0.071 50 0.7 0.7 1.0

315 0.990 0.078 50 0.7 0.7 1.0

355 1.115 0.099 50 0.7 0.7 1.0

400 1.257 0.126 50 0.8 0.8 1.0

450 1.414 0.159 50 0.8 0.8 1.2

500 1.571 0.196 50 0.8 0.8 1.2

550 1.728 0.238 50 0.8 0.8 1.2

560 1.759 0.246 50 0.8 0.8 1.2

600 1.885 0.283 50 0.8 0.8 1.2

630 1.979 0.312 50 1.0 1.0 1.2

650 2.042 0.332 50 1.0 1.0 1.2

710 2.231 0.392 50 1.0 1.0 1.5

750 2.356 0.442 50 1.0 1.0 1.5

800 2.513 0.503 50 1.0 1.0 1.5

850 2.670 0.567 50 1.0 1.0 1.5

900 2.827 0.636 50 1.0 1.0 1.5

950 2.985 0.709 50 1.0 1.0 2.0

1000 3.142 0.785 50 1.0 1.0 2.0

1050 3.299 0.866 50 1.0 1.0 2.0

1100 3.456 0.950 50 1.0 1.0 2.0

1120 3.519 0.985 50 1.2 1.2 2.0

1150 3.613 1.039 50 1.2 1.2 2.0

1200 3.770 1.131 50 1.2 1.2 2.0

1250 3.927 1.227 50 1.2 1.2 2.0

1300 4.084 1.327 50 1.2 1.2 2.0

1350 4.241 1.431 50 1.2 1.2 2.0

1400 4.398 1.539 100 1.2 1.2 2.0


D

iL iL

L

DVAC Standard Specifications - Grooved Seam


GI CSD 200


Ordering example:



Concentric Reducer

Eccentric Reducer

GI CLL 200 150

MaterialCodeDimension D1

Dimension D2

Ordering example

Circular Straight Duct - Stitch Welded Seam

Reducing Segmented Bend

GI RSB 200 150


Dimension D2

Ordering example


R=D

Bend °- ockseamed22.5 L

GI BFL 20022.5°

R=D

GI CSDS 200


Ordering exampleGI RCLL 200 150


Dimension D2

Ordering example




GI BFL15° 200


Ordering example:


Ordering example:

23

• RCLLL = D - D1 2•

• Minimum Length 100mm, Maximum Length 400mm

• CLL• L = D - D1 2


• CSDS• L: Standard Length: 1220 mm

• BFL15°• Standard 2-Gore

• BFL22.5°• Standard 2-Gore

C

E

A

D

F

B

• RSB

D

L

1D 2D

L

1D2D

L

1D

2D

DD

Fittings


As per:




- SMACNA (2nd Edition-1995) See Page 3.1- SMACNA (3rd Edition-2005) See Page 3.1

As per:

Bend 90°- ockseamedL

GI BFL 20090°


Ordering example


GI BFL 20060°


Ordering example


GI BFL45 200°


Ordering example


GI BFL 20030°


Ordering example

R=D

R=DR=D

R=D

Metered Elbows

Duct Velocity

R/D Ratio Number of Mitered Pieces

Centerline Radiusto Duct DiameterCenterline Radiusto Duct Diameter

90°9 60° 45°45

Up to 1000 fpm (5mps) 0.6 4 3 3

1001 to 1500 fpm (5 to 7.5mps) 1.0 4 3 3

above 1500 fpm (7.5mps) 1.5 5 4 3




24




• °BFL30• Standard 2 -Gore

I

G

J

H

D D

DD

Fittings





As per:

Twin Segment Bend

GI TSB 200 150 150MaterialCodeDimension D1

Dimension D2

Dimension D3

Ordering example

2 Segment Bend 90°

GI 2SB90° 200


Ordering example

Bend 90° Lockseamed with Branch

GI 200 150BFLB90°


Dimension D2

Ordering example

Circular Offset

GI CO 200 300 500

MaterialCodeDimension DOffset OFFLength L

Ordering example

Centric Tee Piece

GI TCL 200 150


Dimension D2

Ordering example

Centric Cross Tee Piece

D2

100 to 650mm

BL

50mm

710 to 1400mm 100mm

D & D2 3

100 to 650mm

BL

50mm

710 to 1400mm 100mm

GI XCL 200 100 100


Dimension D2

Dimension D3

Ordering example




25

• TCL• L = D +100mm2

• XCLL = the longer of D or D +100mm2 3•

M

O

K

N

P

L

• TSB • 2SB90°

• BFLB90° • CO

D

1D

2D

D

L

OFF

1D

2D

L

1D

2D

3D

L

1D

D32D

Fittings





As per:

Centric Tee Piece 45°

GI TCL 200 15045°


Dimension D2

Ordering example

D2

100 to 250mm

BL

50mm

280 to 355mm 75mm

400 to 650mm 100mm

710 to 1400mm 150mm

Centric Cross T- Piece 45°

GI TCCL 200 150 15045°


Dimension D2

Dimension D3

Ordering example

D & D2 3

100 to 250mm

BL

50mm

280 to 355mm 75mm

400 to 650mm 100mm

710 to 1400mm 150mm

Reducing Tee 45°

L

Reducing Cross Tee 45°

GI RCT 200 150 150 15045°


Dimension D2

Dimension D3

Dimension D4

Ordering example

GI RT 200 150 15045°


Dimension D2

Dimension D3

Ordering example

Shoe Tee - Offset

45°

GI STO 200 150


Dimension D2

Ordering example

D2

100 to 200mm

BL

100mm

225 to 355mm 175mm

400 to 650mm 250mm

710 to 1400mm 300mm

Y - Tee

GI TY 45 200°

MaterialCodeDegreeDimension D1

Ordering example

D2

100 to 250mm

BL

50mm

280 to 355mm 75mm

400 to 650mm 100mm

710 to 1400mm 150mm

D & D2 3

100 to 250mm

BL

50mm

280 to 355mm 75mm

400 to 650mm 100mm

710 to 1400mm 150mm




26

• TCL45°• L = D x1.5 +100mm2

• TCCL45°L = the longer of D or D x1.5 +100mm2 3•

• RT45°• L = D x1.5 +100mm2

• RCT45°L = the longer of D or D x1.5 +100mm2 3•

• STOL = D + BL + 100mm2•

• TY45°30 ,• ° ° °45 and 60 available

• D = D = D1 2 3

S

U

Q

T

V

R

75mm

50mm

1D

2D

3D

2D

3D1D

L

75mm

50mm

1D

75mm

50mm

4D

3D

2D

2D 3D

1D

50mm

50mm

L

1D

2D

1D

2D

L

Fittings





As per:

Centric Tee Piece with Reducer

GI 200 150 100TCPL


Dimension D2

Dimension D3

Ordering example

D2

100 to 650mm

BL

50mm

710 to 1400mm 100mm

Conical Tee

GI TC 200 150


Dimension D2

Ordering example

Rectangular Shoe with Pipe

45°

GI RSWP 200 300X150

MaterialCodeDim. DDim. Width x Depth

Ordering exampleGI RCSWP 200 300X150 300X150

MaterialCodeDim. DDim. Width x Depth1 1

Dim. Width x Depth2 2

Ordering example

45°

L

Rectangular Cross Shoe with Pipe

Rectangular Shoe on Pipe

• RSP• L =Width + 100mm

GI RSP 200 300X150

MaterialCodeDiameter PipeDim. Width x Depth

Ordering example

45°

Circular Shoe on Flat

GI CSF 200


Ordering example

BL

45°

D

100 to 200mm

L

+75mm

224 to 355mm +100mm

400 to 650mm +125mm

710 to 1400mm +150mm

BL

75mm

100mm

125mm

150mm




27

• TCPLL =D +150mm1 2•

• L =D - D2 1 3

• Minimum L 100mm, Maximum L2 400mm2

• TCL = D + 150mm2•

• RSWPL =Width + 200mm•

• RCSWPL = the longer of Width or Width + 200mm1 2•

Y

AA

W

Z

AB

X

CSF•

3D1D

2D

1L 2L

1D

L

2D

+ 50mmD2

L

150mm

50mm

Width

D

50mm

50mm

Width1

Width2

D

150mm

150mm

Width

L

D

50mm

D2

100 to 200mm

BL

150mm

224 to 400mm 200mm

450 to 650mm 250mm

710 to 1400mm 300mmBL

Fittings





As per:

Collar Saddle Branch 90°

6Branch 0° Branch 45°

GI CS 200 200


Diameter Pipe D1

Ordering example

GI B 200 20090°


Diameter Pipe D1

Ordering example




28

GI B 200 20045°


Diameter Pipe D1

Ordering example

GI B 200 20060°


Diameter Pipe D1

Ordering example

AG AH

AC AD

AE AF

0°9• BCS•

°45• B0°6• B

2D

1D 1D

2D

1D

2D2D

1D

Circular Shoe on Pipe

GI CSP 200 200


Diameter Pipe D1

Ordering example

CSP•

BL

D2

100 to 200mm

BL

100mm

224 to 355mm 175mm

400 to 650mm 250mm

710 to 1400mm 300mm

1D

Conical Branch on Pipe

GI CBP 200 200


Diameter Pipe D1

Ordering example

CBP•

D2

100 to 200mm

BL

150mm

224 to 400mm 200mm

450 to 650mm 250mm

710 to 1400mm 300mm

BL

15°

1D

45°

Fittings




- SMACNA (2nd Edition-1995) See Page 3.9- SMACNA (3rd Edition-2005) See Page 3.3/3.4

As per:




29

End Cap Tube (Male)

GI 200ECM


Ordering example

End Cap Fittings (Female)

GI F 200EC


Ordering example

Coupling Pipe

GI C 200M


Ordering example

upling FittingCo

GI FC 200


Ordering example

AI AJ

AK AL

ECF•ECM•

FC•MC•

120mm

D

120mm

D

60mm

D

60mm

D

Fittings


t

b

D1D1

Bolts b x t

Dim. N mm

Up to 125 M6 4 25x3

150 to 250 M6 6 30x3

280 to 355 M8 8 40x4

400 to 500 M8 12 40x4

550 to 710 M10 16 40x5

750 to 1400 M10 24 50x5

Circular Flat Flange

GI CFF 200


Ordering example

• CFF• D = D + b2 1

AM AN

1D

2D

t

b

D1D1

Bolts b x b x t

Dim. N mm

Up to 125 M6 4 25x25x3

150 to 250 M6 6 30x30x3

280 to 355 M8 8 40x40x4

400 to 500 M8 12 40x40x4

550 to 710 M10 16 40x40x5

750 to 1400 M10 24 50x50x5

Circular FlangeAngle

GI CAF 200


Ordering example

• CFF• D = D + b2 1

1D

2D

b






30

AQ

AO

AP

GI CWC 200


Ordering example

• CWC• L = D +100mm• H = as per Air Flow

L

150mm

H

40mm

40mm

D

Birdmesh

Rain Cowl

• RC• L = D +200mm• H = D/41

• H = D/22

H1

L

H2

D

GI RC 200


Ordering example

Birdmesh

1D

Drain

Birdmesh

1D

2D

1 + 40mmD

Jet owlC

• JC• L = D x21

• D = D x1.52 1

GI JC 200


Ordering example

L

Side Discharge Terminal

• SDT

AR

D Birdmesh

GI SDT 200


Ordering example

Accessories

45.0





As per:




Strap Hangers for Circular Ducts

DVAC Standard 30X3mm

Dia. Maximum Spacing WireDia.WireDia.

Rod Strap

10 in. dn250mm dn10 in. dn250mm dn

12 ft3.7m12 ft3.7m

One 12 gaOne 2.75mmOne 12 gaOne 2.75mm

¼ in.6.4mm¼ in.6.4mm

1 in. x 22ga25.4 x 0.85mm1 in. x 22ga25.4 x 0.85mm

11-18 in.460mm11-18 in.460mm

12 ft3.7m12 ft3.7m

Two 12 ga or One 8 gaOne 4.27mmTwo 12 ga or One 8 gaOne 4.27mm



19-24 in.610mm19-24 in.610mm

12 ft3.7m12 ft3.7m

Two 10 gaTwo 3.51mmTwo 10 gaTwo 3.51mm



25-36 in900mm25-36 in900mm

12 ft3.7m12 ft3.7m

Two 8 gaTwo 2.7mmTwo 8 gaTwo 2.7mm

⅜ in.9.5mm⅜ in.9.5mm


37-50 in1270mm37-50 in1270mm

12 ft3.7m12 ft3.7m

Two ⅜ in.Two 9.5mmTwo ⅜ in.Two 9.5mm

Two 1 in. x 20ga(2) 25.4 x 1.00mmTwo 1 in. x 20ga(2) 25.4 x 1.00mm

51-60 in1520mm51-60 in1520mm

12 ft3.7m12 ft3.7m



61-84 in.2130mm61-84 in.2130mm

12 ft3.7m12 ft3.7m



85-96 in.2400mm85-96 in.2400mm

12 ft3.7m12 ft3.7m

Two ½ in.Two 12mmTwo ½ in.Two 12mm

Two 1 in. x 16ga½(2) 38 x 1.61mmTwo 1 in. x 16ga½(2) 38 x 1.61mm

Minimum Hanger Sizes for Round Duct

HANGER

HANGER RODS,WIRES

OR STRAPS

HANGER RODS,WIRES

OR STRAPS

GALVANIZED STRAP30x3mmGALVANIZED STRAP30x3mm

SCREW 10mm

BAND ONE HALF-ROUND MAY BE USEDIF DUCT SHAPE IS MAINTAINEDBAND ONE HALF-ROUND MAY BE USEDIF DUCT SHAPE IS MAINTAINED

HANGERS MUST NOT DEFORM DUCT SHAPE

HANGER

LOAD RATEDFASTENERLOAD RATEDFASTENER

BAND OF SAME SIZEAS HANGER STRAPBAND OF SAME SIZEAS HANGER STRAP

31

Duct Support

Circular Ducts:






32

Method of Installation - Spiral

Circular Ducts: (Double Wall)

1

2

4 3

7 6

5 8

Installation ofSlip Joint Connector

Screw or RivetPlacement Sequence

Installation of Pipe and Fittings

Double Wall – Slip Fit

The Inner and Outer Collars of DVAC Fittings are sized

to slip into Spiral Ducts.

The Inner Collar fits beyond the outer collar. This permits the

Inner collar to be inserted into the Inner liner of the Spiral Duct;

A similar technique is applied to the single wall.

A tight fit is necessary to minimize friction loss and to promote

proper sealing.

Care should be taken during the handling and installation to avoid

dents and distortions that can case improper fit or difficult installation.

Steps to be followed:

1. Bring the bottom of the Inner fitting collar into the Inner Spiral

Duct at a slight angle.

2. Work the rest of the Inner Collar into the Spiral Duct.

3. When the Inner Collar is fully inserted, start the Outer Collar in

the same way.

4. Carefully work the rest of the Collar into the Spiral Duct

until approximate 20mm of the collar, that remains exposed

between the end of the Spiral Duct and the stop bead of the

fitting collar.

Do not use a screwdriver or knife to help make the connection.

Apply pressure with the heal of your hand or with your fist

to help slip the fitting into the Duct.

5. Apply Duct sealer to this exposed area.

6. Push the fitting into the Spiral Duct until the stop bead meets

the edge of the Spiral Duct.

7. Fasten the fitting into the Spiral Duct with screws or rivets

as per the chart at right. The screws or rivets should be evenly spaced

around the perimeter of the connection, approximate 15mm back

from the stop bead. Placement of the screws or rivets should be

opposite to each other as demonstrated in the diagram.

METHOD OF INSTALLATION - SPIRAL






33

Thickness Schedule (For Fittings)


Wall Thickness ScheduleCircular Fittings Duct

• Standard Seam: Stitch WeldedStandard Seam for Aluminum:• CLINCH

• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)


iLLi

L

Li

iL

iL

iL L1 2L

D12D

D

D3D1

D3

Li Li

iL

iL

iLiL

iL

Dimensions and Wall Thickness - (Double Wall)Dimensions and Wall Thickness

StandardDiameter

(mm)

StandardDiameter

(mm)

Li

nom(mm)


GI S 304, 316SS 304, 316S AL

Inner Dia. / Outer Diam.Inner Dia. / Outer Diam. Inner Dia. / Outer Dia.Inner Dia. / Outer Dia. Inner Dia. / Outer Dia. Inner Dia. / Outer Dia.Inner Dia. / Outer Dia.

100 / 150 or 200 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

125 / 180 or 224 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

140 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

150 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

160 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

180 / 224 or 280 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

200 / 250 or 300 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

224 / 280 or 315 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

250 / 300 or 355 50 0.6 / 0.7 0.6 / 0.7 1.0 / 1.0

280 / 355 or 400 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

300* / 355* or 400* 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

315* / 355* or 400* 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

355* / 400* or 450* 50 0.7 / 0.8 0.7 / 0.8 1.0 / 1.0

400* / 450* or 500 50 0.8 / 0.8 0.8 / 0.8 1.0 / 1.2

450* / 500* or 550* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

500* / 550* or 600 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

550* / 600* or 650* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

560* / 600* or 650* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

600* / 650* or 710 50 0.8 / 1.0 0.8 / 1.0 1.2 / 1.2

630* / 710* or 750* 50 1.0 / 1.0 1.0 / 1.0 1.2 / 1.2

650* / 710* or 750 50 1.0 / 1.0 1.0 / 1.0 1.2 / 1.5

710* / 750* or 800* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

750* / 800* or 850* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

800* / 850* or 900* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

850* / 900* or 950* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

900* / 950* or 1000* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 2.0

950* / 1000* or 1050* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1000* / 1050* or 1100* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1050* / 1100* or 1150* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1100* / 1150* or 1200* 50 1.0 / 1.2 1.0 / 1.2 2.0 / 2.0

1120* / 1200* or 1250* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1150* / 1200* or 1250* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1200* / 1250* or 1300* 50 1.0 / 1.0 1.2 / 1.2 2.0 / 2.0

1250* / 1300* or 1350* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1300* / 1350* or 1400* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1350* / 1400* or 1450* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1400* / 1450* or 1500* 100 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0




As per:




34

DVAC Standard Specifications - Spiral Tube


Spiral Tube• Standard Length: 3000mm

e:Custom Lengths Availabl• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)

* With Outturned Stiffening CorrugationAbove THK 1.5mm


StandardDiameter

(mm)

StandardDiameter

(mm)

Materials Thickness (mm) StandardLength(mm)

StandardLength(mm)GI S 304, 316SS 304, 316S AL

Inner Dia. / Outer Diam.Inner Dia. / Outer Diam. Inner Dia. / Outer Dia.Inner Dia. / Outer Dia. Inner Dia. / Outer Dia. Inner Dia. / Outer Dia.

100 / 150 or 200 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

125 / 180 or 224 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

140 / 200 or 250 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

150 / 200 or 250 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

160 / 200 or 250 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

180 / 224 or 280 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

200 / 250 or 300 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

224 / 280 or 315 0.5 / 0.5 0.5 / 0.5 1.0 / 1.0 3000

250 / 300 or 355 0.5 / 0.6 0.5 / 0.6 1.0 / 1.0 3000

280 / 355 or 400 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0 3000

300* / 355* or 400* 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0 3000

315* / 355* or 400* 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0 3000

355* / 400* or 450* 0.6 / 0.7 0.6 / 0.7 1.0 / 1.0 3000

400* / 450* or 500 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0 3000

450* / 500* or 550* 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0 3000

500* / 550* or 600 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0 3000

550* / 600* or 650* 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0 3000

560* / 600* or 650* 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0 3000

600* / 650* or 710 0.7 / 0.8 0.7 / 0.8 1.0 / 1.0 3000

630* / 710* or 750* 0.8 / 0.8 0.8 / 0.8 1.0 / 1.0 3000

650* / 710* or 750 0.8 / 0.8 0.8 / 0.8 1.0 / 1.2 3000

710* / 750* or 800* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2 3000

750* / 800* or 850* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2 3000

800* / 850* or 900* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2 3000

850* / 900* or 950* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2 3000

900* / 950* or 1000* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2 3000

950* / 1000* or 1050* 0.8 / 0.8 0.8 / 0.8 1.2 / 1.5 3000

1000* / 1050* or 1100* 0.8 / 0.8 0.8 / 0.8 1.5 / 1.5 3000

1050* / 1100* or 1150* 0.8 / 0.8 0.8 / 0.8 1.5 / 1.5 3000

1100* / 1150* or 1200* 0.8 / 1.0 0.8 / 1.0 1.5 / 1.5 3000

1120* / 1200* or 1250* 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5 3000

1150* / 1200* or 1250* 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5 3000

1200* / 1250* or 1300* 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5 3000

1250* / 1300* or 1350* 1.0 / 1.0 1.0 / 1.0 1.5 / 2.0 3000

1300* / 1350* or 1400* 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0 3000

1350* / 1400* or 1450* 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0 3000

1400* / 1450* or 1500* 1.0 / 1.2 1.0 / 1.2 2.0 / 2.0 3000

* With Outturned Stiffening Corrugation

L

L

L

D*

D*

D

GI DW25 SR 200 GI

Outer MaterialInsulation THKCodeDimension DInner Material

Ordering example

OuterDia.

InnerDia.



As per:




35


DVAC Standard Specifications - Grooved Seam


CSD•

• L: Standard Length 1220 mm• To ± 10 in. wg (Galvanized)• To ± 10 in. wg (Stainless Steel 304, 316)• To ± 2 in. wg (Aluminum)

Circular Straight Duct - Grooved Seam


iL iL

L

D

GI DW25 CSD 200 GI


Ordering example


StandardDiameter

(mm)

StandardDiameter

(mm)

Li

nom(mm)


GI S 304, 316SS 304, 316S AL

Inner Dia. / Outer Diam. Inner Dia. / Outer Dia. Inner Dia. / Outer Dia.Inner Dia. / Outer Dia. Inner Dia. / Outer Dia.

100 / 150 or 200 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

125 / 180 or 224 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

140 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

150 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

160 / 200 or 250 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

180 / 224 or 280 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

200 / 250 or 300 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

224 / 280 or 315 50 0.6 / 0.6 0.6 / 0.6 1.0 / 1.0

250 / 300 or 355 50 0.6 / 0.7 0.6 / 0.7 1.0 / 1.0

280 / 355 or 400 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

300* / 355* or 400* 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

315* / 355* or 400* 50 0.7 / 0.7 0.7 / 0.7 1.0 / 1.0

355* / 400* or 450* 50 0.7 / 0.8 0.7 / 0.8 1.0 / 1.0

400* / 450* or 500 50 0.8 / 0.8 0.8 / 0.8 1.0 / 1.2

450* / 500* or 550* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

500* / 550* or 600 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

550* / 600* or 650* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

560* / 600* or 650* 50 0.8 / 0.8 0.8 / 0.8 1.2 / 1.2

600* / 650* or 710 50 0.8 / 1.0 0.8 / 1.0 1.2 / 1.2

630* / 710* or 750* 50 1.0 / 1.0 1.0 / 1.0 1.2 / 1.2

650* / 710* or 750 50 1.0 / 1.0 1.0 / 1.0 1.2 / 1.5

710* / 750* or 800* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

750* / 800* or 850* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

800* / 850* or 900* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

850* / 900* or 950* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 1.5

900* / 950* or 1000* 50 1.0 / 1.0 1.0 / 1.0 1.5 / 2.0

950* / 1000* or 1050* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1000* / 1050* or 1100* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1050* / 1100* or 1150* 50 1.0 / 1.0 1.0 / 1.0 2.0 / 2.0

1100* / 1150* or 1200* 50 1.0 / 1.2 1.0 / 1.2 2.0 / 2.0

1120* / 1200* or 1250* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1150* / 1200* or 1250* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1200* / 1250* or 1300* 50 1.0 / 1.0 1.2 / 1.2 2.0 / 2.0

1250* / 1300* or 1350* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1300* / 1350* or 1400* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1350* / 1400* or 1450* 50 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

1400* / 1450* or 1500* 100 1.2 / 1.2 1.2 / 1.2 2.0 / 2.0

OuterDia.

InnerDia.



Concentric Reducer

Eccentric Reducer


As per:

Circular Straight Duct - Stitch Welded Seam

L

Reducing Segmented Bend


R=D

Bend °- ockseamed22.5 L

R=D




36

• RCLLL = D - D1 2•


• CLL• L = D - D1 2


• CSDS• L: Standard Length: 1220 mm


• BFL22.5°• Standard 2-Gore

C

E

A

D

F

B

• RSB

1D 2D

L

2D

1D2D

1D

L

D D

D

GI DW25 BFL22.5 200 GI°


Ordering exampleGI DW25 BFL15 200 GI°


Ordering example

GI DW25 CLL 200 150 GI

Outer MaterialInsulation THKCodeDimension D1

Dimension D2

Inner Material

Ordering exampleGI DW25 RSB 200 150 GI


Dimension D2

Inner Material

Ordering example

GI DW25 RCLL 200 150 GI


Dimension D2

Inner Material

Ordering example

GI DW25 CSDS 200 GI


Ordering example

Fittings





As per:

Bend 90°- ockseamedLBend °- ockseamed60 L

Bend °- ockseamed45 LBend °- ockseamed30 L

R=D

R=DR=D

R=D

Metered Elbows

Duct Velocity

R/D Ratio Number of Mitered Pieces

Centerline Radiusto Duct DiameterCenterline Radiusto Duct Diameter

90°9 60° 45°45

Up to 1000 fpm (5mps) 0.6 4 3 3

1001 to 1500 fpm (5 to 7.5mps) 1.0 4 3 3

above 1500 fpm (7.5mps) 1.5 5 4 3




37




• °BFL30• Standard 2-Gore

I

G

J

H

D D

DD

GI DW25 BFL45 200 GI°


Ordering exampleGI DW25 BFL3 200 GI0°


Ordering example

GI DW25 BFL 200 GI90°


Ordering exampleGI DW25 BFL6 200 GI0°


Ordering example

Fittings





As per:

Twin Segment Bend 2 Segment Bend 90°

Bend 90° Lockseamed with Branch Circular Offset

Centric Tee Piece Centric Cross Tee Piece

D2

100 to 650mm

BL

100mm

710 to 1400mm 150mm

D & D2 3

100 to 650mm

BL

100mm

710 to 1400mm 150mm

GI DW25 XCL 200 100 100 GI


Dimension D2

Dimension D3

Inner Material

Ordering example




38

• TCL• L = D +150mm2

• XCLL = the longer of D or D +150mm2 3•

M

O

K

N

P

L

• TSB • 2SB90°

• BFLB90° • CO

OFF

L

L

D1

D2

D2 D3

D1

D

D2

D

D1

D2

D1

3D

BLBL

GI DW25 200 100 GIBFLB90°


Dimension D2

Inner Material

Ordering example GI DW25 CO 200 300 500 GI

Outer MaterialInsulation THKCodeDimension DOffset OffLength LInner Material

Ordering example

GI DW25 TSB 200 100 100 GI


Dimension D2

Dimension D3

Inner Material

Ordering example

GI DW25 2S 200 GIB90°


Ordering example

GI DW25 TCL 200 150 GI


Dimension D2

Inner Material

Ordering example

L

Fittings





As per:

Centric Tee Piece 45°

D2

100 to 250mm

BL

100mm

280 to 355mm 125mm

400 to 650mm 150mm

710 to 1400mm 200mm

Centric Cross T- Piece 45°

D & D2 3

100 to 250mm

BL

100mm

280 to 355mm 125mm

400 to 650mm 150mm

710 to 1400mm 200mm

Reducing Tee 45° Reducing Cross Tee 45°

Shoe Tee - Offset

45°

D2

100 to 200mm

BL

150mm

225 to 355mm 225mm

400 to 650mm 300mm

710 to 1400mm 350mm

Y - Tee

D2

100 to 250mm

BL

100mm

280 to 355mm 125mm

400 to 650mm 150mm

710 to 1400mm 200mm

D & D2 3

100 to 250mm

BL

100mm

280 to 355mm 125mm

400 to 650mm 150mm

710 to 1400mm 200mm




39

• TCL45°• L = D x1.5 +150mm2

• TCCL45°L = the longer of D or D x1.5 +150mm2 3•

• RT45°• L = D x1.5 +150mm2

• RCT45°L = the longer of D or D x1.5 +150mm2 3•

• STOL = D + BL + 150mm2•

• TY45°30 ,• ° ° °45 and 60 available

• D = D = D1 2 3

S

U

Q

T

V

R

L

50mm

L

50mm

50mm

50mm

L

50mm

D1

2D 3D

D1

D2

D1 D3

2D

L

50mmD1 4D

2D

3D

BL BL

BL

BL

BL

BL

BL

D1

2D 2D

3D

D1

75mm

75mm

75mm 75

mm

GI DW25 TCL 200 100 GI45°


Dimension D2

Inner Material

Ordering example GI DW25 TCCL 200 100 100 GI45°


Dimension D2

Dimension D3

Inner Material

Ordering example

GI DW25 200 150 150 GIRT45°


Dimension D2

Dimension D3

Inner Material

Ordering example

GI DW25 T 200 GIY 45°

Outer MaterialInsulation THKCodeDegreeDimension D1

Inner Material

Ordering example

GI DW25 200 150 150 150 GIRCT45°


Dimension D2

Dimension D3

4Dimension DInner Material

Ordering example

GI DW25 STO 200 100 GI


Dimension D2

Inner Material

Ordering example

Fittings





As per:

Centric Tee Piece with Reducer

D2

100 to 650mm

BL

100mm

710 to 1400mm 150mm

Conical Tee

Rectangular Shoe with Pipe

45°

45°

L

Rectangular Cross Shoe with Pipe

Rectangular Shoe on Pipe

• RSP• L =Width + 150mm

45°

Circular Shoe on Flat

45°D

100 to 200mm

L

+125mm

224 to 355mm +150mm

400 to 650mm +175mm

710 to 1400mm +200mm

BL

125mm

150mm

175mm

200mm




40

• TCPLL =D +150mm1 2•

• L =D - D2 1 3

• Minimum L 100mm, Maximum L 400mm2 2

• TCL = D + 150mm2•

• RSWPL =Width + 2 0mm• 5

• RCSWPL = the longer of Width or Width + 2 0mm1 2• 5

Y

AA

W

Z

AB

X

CSF•

1L 2L

L

D2 +100mm

L

200mm

50mm

Width

50mm

50mm

Width1

Width2

200mm

200mm

Width

50mm

D

D1

D1

3D

D2

D2

D

GI DW25 TC 200 150 GI


Dimension D2

Inner Material

Ordering exampleGI DW25 TCPL 200 150 100 GI


Dimension D2

Dimension D3

Inner Material

Ordering example

GI DW25 RCSWP 200 300X150 300X150 GI

Outer MaterialInsulation THKCodeDimension DDimension Width x Depth1 1

Dimension Width x Depth2 2

Inner Material

Ordering example

GI DW25 RSWP 200 300X150 GI

Outer MaterialInsulation THKCodeDimension DDimension Width x Depth

Inner Material

Ordering example

GI DW25 RSP 200 300X150 GI

Outer MaterialInsulation THKCodeDiameter PipeDimension Width x Depth

Inner Material

Ordering example

GI DW25 CSF 200 GI


Ordering example

BL

D2

100 to 200mm

BL

150mm

224 to 400mm 200mm

450 to 650mm 250mm

710 to 1400mm 300mm

Fittings


L

D

BL




As per:

Collar Saddle Branch 90°

6Branch 0° Branch 45°




41

AG AH

AC AD

AE AF

0°9• BCS•

°45• B0°6• B

Circular Shoe on Pipe

CSP•

BL

D2

100 to 200mm

BL

100mm

224 to 355mm 175mm

400 to 650mm 250mm

710 to 1400mm 300mm

Conical Branch on Pipe

CBP•

D2

100 to 200mm

BL

150mm

224 to 400mm 200mm

450 to 650mm 250mm

710 to 1400mm 300mm

BL

15°45°

D1

D2

D1

2D

2D

1D

2D

1D

D2

1D

D2

1D

GI DW25 B 200 200 GI90°


Diameter Pipe D1

Inner Material

Ordering example

GI DW25 B 200 200 GI45°


Diameter Pipe D1

Inner Material

Ordering exampleGI DW25 B 200 200 GI60°


Diameter Pipe D1

Inner Material

Ordering example

GI DW25 CS 200 200 GI


Diameter Pipe D1

Inner Material

Ordering example

GI DW25 CSP 200 200 GI


Diameter Pipe D1

Inner Material

Ordering exampleGI DW25 CBP 200 200 GI


Diameter Pipe D1

Inner Material

Ordering example

Fittings





As per:




42

End Cap Tube (Male) End Cap Fittings (Female)

Coupling Pipe upling FittingCo

AI AJ

AK AL

ECF•ECM•

FC•MC•

120mm

120mm

60mm

60mm

D D

D D

GI DW25 ECM 200 GI


Ordering exampleGI DW25 ECF 200 GI


Ordering example

GI DW25 MC 200 GI


Ordering exampleGI DW25 FC 200 GI


Ordering example

Fittings


t

b

D1D1

Bolts b x t

Dim. N mm

Up to 125 M6 4 25x3

150 to 250 M6 6 30x3

280 to 355 M8 8 40x4

400 to 500 M8 12 40x4

550 to 710 M10 16 40x5

750 to 1400 M10 24 50x5

Circular Flat Flange

GI CFF 200


Ordering example

• CFF• D = D + b2 1

AM AN

1D

2D

t

b

D1D1

Bolts b x b x t

Dim. N mm

Up to 125 M6 4 25x25x3

150 to 250 M6 6 30x30x3

280 to 355 M8 8 40x40x4

400 to 500 M8 12 40x40x4

550 to 710 M10 16 40x40x5

750 to 1400 M10 24 50x50x5

Circular FlangeAngle

GI CAF 200


Ordering example

• CFF• D = D + b2 1

1D

2D

b

DOHA - QATAR - PHONE: +974-44500118 - +974-44500119 - FAX: +974-44500117

Remarks:

43

Small Industries Zone - Pink AreaZone 81 - Street 13 - Bldg. 57

Tel: +974 445 00 118 - 445 00 119Fax: +974 445 00 117P.O. Box: 55619 - Doha, State Of Qatar

Email: [email protected]: www.dvac-duct.com


circular ducts 2014 -...

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