Blowdown Valves
-
Upload
shameer-majeed -
Category
Documents
-
view
223 -
download
0
Transcript of Blowdown Valves
-
8/18/2019 Blowdown Valves
1/13
Forged Steel Valves - BB Series
Class 800 Blow Down ValveClass 800 Blow Down Valve - Materials
Class 800 Blow Down Valve - Dimensions
Class 1500/2000 Blow Down Valve
Class 1500/2000 Blow Down Valve - Materials
Class 1500/2000 Blow Down Valve - Dimensions
Blow Down Chart for Class 800
Blow Down Chart for Class 1500/2000
Forged Steel Angle Blow Down Valves
Model Numbers & Speciality Codes
?
F o
r g e d S t e
e l V a l v e s
( B B S e r i e s )
-
8/18/2019 Blowdown Valves
2/13
Class 800 Blow Down Valve
Note: Available orifice size: 1/8”, 3/16”, 1/4” & 5/16”
Forged Steel Valves - BB Series
-
8/18/2019 Blowdown Valves
3/13
2
1
3
Class 800 Blow Down Valve
1
2
3
Micrometer adjustment for handwheel
setting. Accurate adjustments can bemade 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
-
8/18/2019 Blowdown Valves
4/13
1
3
7
4
6
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
-
8/18/2019 Blowdown Valves
5/13
Class 800 Blow Down Valve - Dimensions
A
D
E
F
G
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)
Valve
Size
1 inch
25 mm
Forged Steel Valves - BB Series
E = O P E N E D
F = C L O S E D
D
G
L A K
H
M
-
8/18/2019 Blowdown Valves
6/13
100 150 200 300 400 500 1000.5
.6
.7
.8.9
1
2
1.5
2.5
3
4
5
6
7
89
10
155/16
1 4
3/16
1/8
Blow Down Chart for Class 800
Forged Steel Valves - BB Series
B L O W D O
W N C A P A C I T Y - T H O U
S A N D S L B S . P E R H R .
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
-
8/18/2019 Blowdown Valves
7/13
-
8/18/2019 Blowdown Valves
8/13
2
1
3
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.
-
8/18/2019 Blowdown Valves
9/13
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
5
3
4
-
8/18/2019 Blowdown Valves
10/13
Model No. BB15N0/BB20N0
DIMENSIONS (mm)
A
D
EF
G
H
K
LM
Wt.(Kg)
79
317
435402
184.2
88.9
48.6
34.9
12.7
20.4
Valve
Size
(Class 1500/2000 Socket Weld End)
11/2 inch
40 mm
60
206
311298
168.3
63.5
33.8
22.2
12.7
9.0
1 inch
25 mm
Class 1500/2000 Blow Down Valve - Dimensions
Forged Steel Valves - BB Series
E = O P E N E D
F = C L O S E D
D
T u r n t h r o u g h 9
0 °
G
Note Available Orifice size
NB: 1” : 1/8”, 3/16”, 1/4”, 5/16”,
3/8”, 7/16” & 1/2”
NB: 11/2” : 3/8”, 7/16”, 1/2”, 5/8”,3/4”, 7/8” & 1
F d St l V l BB S i
-
8/18/2019 Blowdown Valves
11/13
Blow Down Chart for Class 1500/2000
BOILER PRESSURE P.S.I.G.
500 600 700 800 9001000 1500 2000 2500 30003200
200
180150
100
9080706050
40
30
25
20
15
10
5
4
32.5
2
1.5
1
1
7/8
5/8
7/16
3/8
1/4
1/2
3/4
5/16
3/16
1/8
B L O W D O W N C A P A C I T Y - T H O U S A N D S L B S . P E R H R .
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
Forged Steel Valves BB Series
-
8/18/2019 Blowdown Valves
12/13
Forged Steel Angle Blow Down Valves
(High Pressure drop valves)
Pressure Class Size
l 800 1”
l 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.
Forged Steel Valves BB Series
-
8/18/2019 Blowdown Valves
13/13
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 modelnumbers with speciality codes to preclude misunderstanding of your requirements. However, a detailed description forSPECIALS must always accompany order.
BB XX N O XX X
Rating
08 - 800 C
15 - 1500 C
20 - 2000 C
Design Variant
N - ANSI VALVE
Size
F6 - 1 “
F7 - 11/2”
Material
B - A 105
Forged Steel Valves - BB Series