bhel blow down
DESCRIPTION
BHekTRANSCRIPT
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Forged Steel Valves
BB SeriesBD SeriesBM SeriesBP Series
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Forged Steel Valves - BB Series
Class 800 Blow Down ValveClass 800 Blow Down Valve - MaterialsClass 800 Blow Down Valve - DimensionsClass 1500/2000 Blow Down ValveClass 1500/2000 Blow Down Valve - MaterialsClass 1500/2000 Blow Down Valve - DimensionsBlow Down Chart for Class 800Blow Down Chart for Class 1500/2000Forged Steel Angle Blow Down ValvesModel Numbers & Speciality Codes
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Class 800 Blow Down Valve
Note: Available orifice size: 1/8 , 3/16 , 1/4 & 5/16
Forged Steel Valves - BB Series
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21
3
Class 800 Blow Down Valve
1
2
3
Micrometer adjustment for handwheel setting. Accurate adjustments can be made to 1/10th handwheel turn or for extremely fine setting to 1/100th handwheel turn.
Hardfaced seats (stellited) provide high resistance to galling, wear and erosion.
Body-bonnet joint designed with built-in compression gauge and spiral wound gasket, which provides positive seal and prevents over-stressing of flange.
Forged Steel Valves - BB Series
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13
7
46
8 9
2
Class 800 Blow Down Valve - Materials
No. PART NAME STANDARD 1 Body A 105 2 Bonnet A 105 3 Seat Ring Stellite 4 Stem 13% Cr SS (Stellited) 5 Orifice Tube 18/8 SS 6 Bonnet Bolt A 193 - B7 7 Handwheel Malleable Iron 8 Gland Packing Graphited Asbestos 9 Gasket Spiral Wound Asbestos with 304SS
Forged Steel Valves - BB Series
5
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Class 800 Blow Down Valve - Dimensions
A
D
E
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H
K
L
M
Wt.(Kg)
48
75
159
151
82.6
57.2
33.8
25.4
12.7
3.6
Model No. BB08N0DIMENSIONS (mm)
ValveSize
1 inch25 mm
Forged Steel Valves - BB Series
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100 150 200 300 400 500 1000.5
.6
.7
.8
.91
2
1.5
2.5
3
4
5
6
789
10
155/16
1 4
3/16
1/8
Blow Down Chart for Class 800 Forged Steel Valves - BB Series
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BOILER PRESSURE P.S.I.G.
CONTINUOUS BLOW DOWN CHART
HIGH PRESSURE DROP VALVE
1 Class 800
1/8 - 3/16 - 1/4 and 5/16 DIA ORIFICES
WIDE OPEN CAPACITIES VS. BOILER PRESSURES
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Forged Steel Valves - BB Series
Available Orifice sizeNB: 1 : 1/8 , 3/16 , 1/4 , 5/16 ,
3/8 , 7/16 & 1/2NB: 11/2 : 3/8 , 7/16 , 1/2 , 5/8 ,
3/4 , 7/8 & 1
Class 1500/2000 Blow Down Valve
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21
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Class 1500/2000 Blow Down Valve
Forged Steel Valves - BB Series
1
2
3
Micrometer adjustment for handwheel setting. Accurate adjustments can be made to 1/10th handwheel turn.
Hardfaced seats (stellited) provide high resistance to galling, wear and erosion.
Body and bonnet have a full penetration weld without crevices where corrosion occurs and provides a unitary construction. No weld-cutting required for servicing.
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No. PART NAME STANDARD
1 Body A 105
2 Bonnet A 105
3 Seat Ring A 105 with Stellite
4 Stem 13% Cr SS (Stellited)5 Orifice tube 18/8 SS
6 Gland Packing Graphited asbestos
7 Handle Malleable iron
1
2
7
6
Class 1500/2000 Blow Down Valve - Materials
Forged Steel Valves - BB Series
53
4
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Model No. BB15N0/BB20N0
DIMENSIONS (mm)
ADEFGHKLM
Wt.(Kg)
79317435402
184.288.948.634.912.720.4
ValveSize
(Class 1500/2000 Socket Weld End)
11/2 inch40 mm
60206311298
168.363.533.822.212.7
9.0
1 inch25 mm
Class 1500/2000 Blow Down Valve - Dimensions
Forged Steel Valves - BB SeriesE
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Note Available Orifice sizeNB: 1 : 1/8 , 3/16 , 1/4 , 5/16 ,
3/8 , 7/16 & 1/2NB: 11/2 : 3/8 , 7/16 , 1/2 , 5/8 ,
3/4 , 7/8 & 1
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Blow Down Chart for Class 1500/2000
BOILER PRESSURE P.S.I.G.
500 600 700 800 9001000 1500 2000 2500 30003200
200180150
100908070605040
302520
15
10
5
43
2.52
1.5
1
1
7/8
5/8
7/163/8
1/4
1/2
3/4
5/16
3/16
1/8
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Forged Steel Valves - BB Series
CONTINUOUS BLOW DOWN CHART
HIGH PRESSURE DROP VALVES
1 & 11/2 - Class 1500/2000
WIDE OPEN CAPACITIES VS. BOILER PRESSURES
1/8 TO 1/2 DIA. ORIFICES - 1 VALVE
3/8 TO 1 DIA. ORIFICES - 11/2 VALVE
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Forged Steel Angle Blow Down Valves(High Pressure drop valves)
Pressure Class Size
l 800 1l 1500/2000 1 & 11/2
Forged Steel Valves - BB Series
Supplied with hardfaced orifice type seat, sized to suit application.
Class 800 valves - size 1 .... available with orifice sizes ranging from 1/8 to 5/16 .
Class 1500/2000 valves - size 1 available with orifice sizes ranging from 1/8 to 1/2 . 11/2 valves 3/8 to 1 orifice.
Used on any throttling service which results in severe erosion and rapid wearing out of conventional design valves.
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MODEL NUMBERS SPECIALITY CODE
ORIFICE SIZE TO BE SELECTED BASED ON REQUIRED BLOWDOWN QUANTITY[Motor Operation also available]
NOTEModel numbers along with speciality codes are designed to cover essential features. When ordering, please refer model numbers with speciality codes to preclude misunderstanding of your requirements. However, a detailed description for SPECIALS must always accompany order.
BB XX N O XX XRating08 - 800 C15 - 1500 C 20 - 2000 C
Design Variant
N - ANSI VALVE
SizeF6 - 1 F7 - 11/2
MaterialB - A 105
Forged Steel Valves - BB Series
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