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FLANGED PRESSURE
RELIEF VALVES - SPRING LOADED
Click
here for in-stock spare part model numbers.
 |
STYLES
JOS AND JBS (with bellows)
Crosby's all purpose pressure relief valve line
with a wide variety of options.
Specifications:
| Sizes: |
1D2
to 8T10 |
| Orifices: |
D(0,
110 sq. in.) to T(26.0 sq.in.), D(71.0 sq. mm) to T(16,774 sq. mm) |
| Inlet Ratings: |
ANSI
cl 150 to 2500 |
| Temperature
Range: |
-450F
to +1000F (-268C to +538C) |
| Materials: |
Carbon
steel body and bonnet std; stainless steel trim std; special alloys available. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 310. |
Click
here for in-stock spare part model numbers.
 |
STYLES
JO AND JB (with bellows) "Over T"
Large orifice closed bonnet pressure
relief valves. Also available with open bonnet as Styles HS/HSU; and as large
orifice pilot operated pressure relief valves. Style JPV-A, for air, gas and steam.
Specifications:
| Sizes: |
10V14
to 20BB224 |
| Orifices: |
V(42.19
sq. in.) to BB2(185.0 sq. in.); V(27,220 sq. mm) to BB2(119,250
sq. mm) |
| Set
Pressures: |
To
300 PSIG (20.7 BarG) |
| Connections: |
ANSI
cl 300 flanged inlet; ANSI cl 150 flanged outlet. Optional ANSI cl 150 inlet flange
avaialable. |
| Materials: |
Carbon
steel body and bonnet std; stainless steel trim std; special alloys available. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 307. |
Click
here for in-stock spare part model numbers.
 |
STYLES
JLT-JOS and JLT-JBS (with bellows)
High performance pressure relief valves
for liquid service.
Specifications:
| Sizes: |
1D2
to 8T10 |
| Orifices: |
D(0.110
sq. in) to T(26.0 sq. in), D(71.0 sq. mm) to T(16,774 sq. in.) |
| Inlet Ratings: |
ANSI
cl 150 to 2500 |
| Temperature
Range: |
-450F
to +1000F, (-268C to +538C) |
| Materials: |
Carbon
steel body and bonnet std; stainless steel trim std; special alloys available. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 310. |
Click
here for in-stock spare part model numbers.
 |
STYLE
JQ
A unique, completely sealed pressure relief valve for transportation and
storage of chlorine and other toxic and corrosive fluids.
Specifications:
| Inlet
Sizes: |
1-1/2
and 4 inches |
| Set
Pressures: |
30
to 430 PSIG (2.07 to 29.6 BarG) |
| Connections: |
1-1/2"
-- Chlorine Institute flange standard; ANSI cl 300 RF available. 4" -- ANSI
cl 300 large tongue standard; RF available. |
| Code: |
ASME
Section VIII |
| Approvals: |
Chlorine
Institute, The Association of American Railroads (AAR) and U.S. Coast Guard. |
Ask for Catalog No. 306. |
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here for in-stock spare part model numbers.
 |
STYLE
PVR
A sanitary pressure/vacuum pressure relief valve for the beverage, food
processing and pharmaceutical industries. This valve provides three modes of self
actuated operation:
- Relieves
excess air or gas pressure.
- Relieves excess liquid pressure in the absence
of air or gas blanketing.
- Prevents formation of a vacuum that could cause
the vessel to buckle due to external pressure.
Specifications:
| Inlet
Sizes: |
3 and
4 inches |
| Set
Pressures: |
14.5
to 125 PSIG (1.00 to 8.62 BarG) |
| Connections: |
Special
lug union nut. Other connections available. |
| Materials: |
Bronze
cylinder, stainless steel and bronze trim with Viton* seats. Other materials avaialbe. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 316.
|
FLANGED PRESSURE RELIEF VALVES - PILOT OPERATED
 |
STYLE
JPV
Non-flowing, snap-acting, pilot operated, pressure relief valves. High
performance valves for overpressure protection of pipes and vessels containg gases
and vapors.
Specifications:
| Sizes: |
1"
x 2" to 8" x 10"; Dual Outlets available in 2" x 3" x
3" thru 8" x 10" x 10" sizes. |
| Orifices: |
D(0.
110 sq. in.) to T(26.0 sq. in.); D(71.0 sq. mm) to T(16,774 sq. mm); Also, Full
Bore available (JPF). (See below.) |
| Inlet
Ratings: |
ANSI
cl 150 to 2500 |
| Temperature
Range: |
-75°F
to +450° (-59C to +232C) |
| Set
Pressures: |
30
to 6170 PSIG (2.07 to 425 BarG) |
| Materials: |
Carbon
steel or stainless steel body with stainless steel trim and stainless steel pilot. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 318. |
Click
here for in-stock spare part model numbers.
 |
STYLE
JPVM
Non-flowing, modulating, pilot operated, pressure relief valve. Used
for overpressure protection of gas, vapor, liquid and steam. Mounted on the same
main valve used with Style JPV.
Specifications:
| Sizes: |
1"
x 2" to 8" x 10"; Dual Outlets available in 2" x 3" x
3" thru 8" x 10" x 10" sizes. |
| Orifices: |
D(0.
110 sq. in.) to T(26.0 sq. in.); D(71.0 sq. mm) to T(16,774 sq. mm); Also, Full
Bore available (JPFM). (See below.) |
| Inlet
Ratings: |
ANSI
cl 150 to 2500 |
| Temperature
Range: |
-75°F
to +450° (-59C to +232C) |
| Set
Pressures: |
30
to 6170 PSIG (2.07 to 425 BarG) |
| Materials: |
Carbon
steel or stainless steel body with stainless steel trim and stainless steel pilot. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 318. |
Click
here for in-stock spare part model numbers.
 |
STYLE
JPVM-C & JPV-C
Pilot operated, pressure relief valves for Cryogenic service.
Specifications:
| Sizes: |
1"
x 2" to 8" x 10"; Dual Outlets available in 2" x 3" x
3" and larger. |
| Orifices: |
D(0,
110 sq. in.) to T(26.0 sq. in.); D(71.0 sq. mm) to T(16,774 sq. mm) |
| Inlet Ratings: |
ANSI
cl 150 to 2500 |
| Temperature
Range: |
To -450°
(-268C) |
| Set
Pressures: |
30
to 1440 PSIG (2.07 to 99.3 BarG) |
| Materials: |
All
stainless main valve with TFE seals; standard snap-acting or modulating stainless
steel pilots. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 318. |
Click
here for in-stock spare part model numbers.
 |
STYLE
JPVM-T
Non-flowing, modulating, pilot operated, pressure relief valve. Used
for overpressure protection of high temperature fluids including hydrocarbons,
inert gases and steam.
Specifications:
| Sizes: |
1"
x 2" to 8" x 10"; Dual Outlets available in 2" x 3" x
3" and larger. |
| Orifices: |
D(0,
110 sq. in.) to T(26.0 sq. in.); D(71.0 sq. mm) to T(16,774 sq. mm); Also, Full
Bore available (JPF). |
| Inlet
Ratings: |
ANSI
cl 150 to 600 |
| Temperature
Range: |
-20°F
to +512° (-29C to +267C) |
| Set
Pressures: |
30
to 740 PSIG (Steam) (2.07 to 51.0 BarG) |
| Materials: |
Pilot
Valve -316 stainless steel standard, PEEK seats, fluorinated propylene seals;
Main Valve-filled TFE seals, TFE seat. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 318. |
Click
here for in-stock spare part model numbers.
 |
STYLE
JPF & JPFM
Full Bore designs for high flow conditions.
Full Bore
Orifice Areas*
(for single or dual outlet)
Specifications:
| Valve
Size |
Effective
Discharge Area |
| 2"
x 3" (x 3") |
2.461
sq. in. (1588 sq. mm) |
| 3"
x 4" (x 4") |
5,546
sq. in. (3578 sq. mm) |
| 4"
x 6" (x 6") |
9,866
sq. in. (6365 sq. mm) |
| 6"
x 8" (x 8") |
22.22
sq. in. (14,335 sq. mm) |
| 8"
x 10" (10") |
39.51
sq. in. (25,490 sq. mm) |
*For use only with Crosby® capacity formulas. See Engineering Handbook or Catalog
No. 318.
Ask for Catalog No. 318. |
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here for in-stock spare part model numbers.
 |
STYLE
JPF-D & JPFM-D
JPV-D & JPVM-D
Dual outlet designs for balanced
reaction forces. Available in both full bore and standard letter orifices with
snap-acting and modulating pilots.
Specifications:
| Sizes: |
2"
x 3" x 3" to 8" x 10" x 10" |
| Effective
Discharge Area: |
0.503
sq. in. thru 39.51 sq. in. (325 sq. mm thru 25490 sq. mm) |
| Inlet Ratings: |
ANSI
cl 150 to 600 |
| Temperature
Range: |
-75F
to +450F (-59C to +232C) |
| Set
Pressures: |
30
to 1480 PSIG (2.07 to 102 BarG) |
| Materials: |
Carbon
steel body with full stainless steel trim as standard. Other materials available. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 318. |
SCREWED
PRESSURE RELIEF VALVES
 |
SERIES
900 OMNI-TRIM®
Pressure relief valve with single trim for liquid, gas and
steam service. Precision lapped flat metal to metal seats or elastomer and TFE
O-ring soft seats provide the ultimate in seat tightness. Blowdown is typically
less than 20%. Capacities certified by National Board of Boiler andPressure Vessel
Inspectors.
Specifications:
| Inlet Sizes: |
1/2
to 2 inches |
| Effective
Orifice Areas: |
0.074
to 0.503 sq. in. (47.7 to 325 sq. mm) |
| Set
Pressures: |
15
to 5000 PSIG (1.03 to 345 BarG) |
| Temperature
Range: |
-450°F
to +750° (-268C to +399C) |
| Connections: |
Male
NPT inlet and Female NPT outlet. Optional female NPT inlet connections available.
Flanged and socket weld connections can also be provided. (See below). |
| Materials: |
Carbon
steel cylinder, 316 stainless steel base, disc insert, disc holder and guide,
and 17-7PH stainless steel spring as standard. MONEL, HASTELLOY, INCONEL and NACE
options are available. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 902. |
Click
here for in-stock spare part model numbers.
 |
SERIES
800 ADJUSTABLE BLOWDOWN
Series 800 pressure relief valves are designed for
use on air, gas, vapor and steam service. External precise blowdown control provides
shorter blowdown then the Series 900, typically in the range of 5 to 15 percent.
Capacities certified by National Board of Boiler and Pressure Vessel Inspectors.
Specifications:
| Inlet Sizes: |
3/4"
x 1" to 2" x 2" and 1-1/2" x 2-1/2" |
| Effective Orifice
Areas: |
0.110,
0.196, 0.307 and 0.503 sq. in. (71.0, 126, 198 and 325 sq. mm) |
| Temperature Range: |
-450°F
to +750° (-268C to +399C) |
| Set
Pressures: |
15
to 5000 PSIG (1.03 to 345 BarG) |
| Steam: |
15
to 1000 PSIG (1.03 to 69 BarG) |
| Connections: |
Male
NPT inlet and Female NPT outlet. Optional female NPT inlet connections available.
Flanged and socket weld connections can also be provided. (See below). |
| Materials: |
Standard
materials are carbon steel cylinder, 316 stainless steel base, disc insert, disc
holder, guide, adjusting ring, set screw and gasket with 17-17PH stainless steel
spring. Optional materials are available for special applications. |
| Code: |
ASME
Section VIII |
Ask for Catalog
No. 902. |
SERIES
800 and 900 CONNECTION CONFIGURATIONS
(Series 900 Illustrated)
Standard Threaded
MNPT X FNPT |
Threaded
FNPT X FNPT |
Flange X Flange |
Male SW X Male SW
(Socket Weld) |
Ask for Catalog
No. 902.
PRESSURE RELIEF
VALVES FOR POWER PLANTS
 |
STYLES
HS/HSU and HSA/HSAU SAFETY VALVES
A rugged line of full nozzle high capacity
flanged valves for saturated and superheated steam service.
Specifications:
| Sizes: |
1
D 2 to 8 T 10; also available in sizes over T orifice. |
| Maximum
Pressure Ratings: |
300,
600, 800 and 900 PSIG (20.7, 41.4, 55.2 and 62.1 BarG) (higher on application). |
| Connections: |
ANSI
flanged inlet and outlet. |
| Code: |
ASME
Section I and VIII |
Ask
for Catalog No. 405. |
Click
here for in-stock spare part model numbers.
 |
STYLE
HSJ HIGH PERFORMANCE SAFETY VALVE
Full nozzle safety valve designed for saturated
and superheated steam service.
Specifications:
| Sizes: |
1-1/2
F 2 to 4 M 6 |
| Maximum
Pressure Ratings: |
ANSI
cl 150, 300, 600, 900, 1500 and 2500 inlet flanges |
| Connections: |
ANSI
flanged inlet and outlet. |
| Code: |
ASME
Section I and VIII |
| Style
HSJ-DOW: |
Available
for Dowtherm* Vaporizers |
Ask for Catalog No. 407.
*Dowtherm is a trademark of the Dow Chemical Company |
Click
here for in-stock spare part model numbers.
 |
STYLES
HC and HCA SAFETY VALVES
HC for drum service to 1500 PSIG (103 BarG) and reheater
inlet; HCA for superheater and reheater outlet and supercritical service.
Specifications:
| Sizes: |
1-1/2F
2-1/2 to 8T12 |
| Maximum
Pressure Ratings: |
800,
900, 1500, 2000, 2500, 3000, 5000 PSIG (55.2, 62.1, 103, 138, 172, 207, 345 BarG) |
| Connections: |
ANSI
flanged or butt weld inlet; ANSI flanged outlet. |
| Code: |
ASME
Section I and VIII |
Ask
for Catalog No. 403. |
Click
here for in-stock spare part model numbers.
 |
STYLES
HCI ISOFLEXTM SAFETY VALVE
Nozzle type safety valve
for saturated and superheated steam service. Seat tightness up to 95% of valve
set pressure.
Specifications:
| Inlet Sizes: |
1-1/2",
2", 2-1/2", 3", 4" and 6" |
| Maximum
Pressure Ratings: |
ANSI
cl 600, 900 and 1500 |
| Connections: |
ANSI
flanged or butt weld inlet and ANSI flanged outlet. |
| Code: |
ASME
Section I and VIII |
Ask
for Catalog No. 408. |
Click
here for in-stock spare part model numbers.
 |
STYLE
HE SAFETY VALVE
With eductor-controlled, pressure-assisted blowdown for saturated
steam service obiler drums with pressures from 1500-3000 PSIG (103-207 BarG).
Specifications:
| Sizes: |
2-1/2
K 6, 2-1/2 K2 6, 3 M 6, 3 M2 6 |
| Maximum
Pressure Ratings: |
2000,
2500, 3000 PSIG (138, 172, 207 BarG) |
| Connections: |
ANI
flanged or butt weld inlet and ANSI flanged outlet. |
| Code: |
ASME
Section I and VIII |
Ask
for Catalog No. 403. |
Click
here for in-stock spare part model numbers.
Style HPV-ST
Style APS2 Controller
|
STYLES
HPV and HPV-ST PRESSURMATIC® VENT VALVES WITH APS2 CONTROLLER
Protect superheaters
from overheating during startup, prolong the life and reduce maintenace of safety
valves.
Specifications:
| Sizes: |
1-1/2"
x 2", 1-1/2" x 2-1/2", 2-1/2" x 4" and 2-1/2" x
6" |
| Maximum
Pressure Ratings: |
1200,
1500, 3000, 5000 PSIG (82.7, 103, 207, 345 BarG) |
| Connections: |
Welded
or flanged inlet; flanged angled outlet (on Style HPV) and straight-through (on
Style HPV-ST). |
| Code: |
ASME
Section I (only on supercritical applications) |
Ask for Catalog No. 403. |
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