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Detailed Diagrams of in-stock spare part model numbers

JOS AND JBS (with bellows)

Styles JOS AND JBS (with bellows)

Crosby's all purpose pressure relief valve line with a wide variety of options. Ask for Catalog No. 310. 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

JO AND JB (with bellows) 'Over T'

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. Ask for Catalog No. 307. 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
JLT-JOS and JLT-JBS (with bellows)

STYLES JLT-JOS and JLT-JBS (with bellows)

High performance pressure relief valves for liquid service. Ask for Catalog No. 310. 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
JQ

STYLE JQ

A unique, completely sealed pressure relief valve for transportation and storage of chlorine and other toxic and corrosive fluids. Ask for Catalog No. 306. 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.
PVR

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:

  1. Relieves excess air or gas pressure.
  2. Relieves excess liquid pressure in the absence of air or gas blanketing.
  3. Prevents formation of a vacuum that could cause the vessel to buckle due to external pressure.

Ask for Catalog No. 316. 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 available.
Code: ASME Section VIII

Flanged Pressure Relief Valves - Pilot Operated

JPV

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. Ask for Catalog No. 318. 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
JPVM

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. Ask for Catalog No. 318. 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
JPVM-C & JPV-C

Style JPVM-C & JPV-C

Pilot operated, pressure relief valves for Cryogenic service. Ask for Catalog No. 318. 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
JPVM-T

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. Ask for Catalog No. 318. 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
JPF & JPFM

Style JPF & JPFM

Full Bore designs for high flow conditions. Ask for Catalog No. 318. 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.

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. Ask for Catalog No. 318. 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

Screwed Pressure Relief Valves

Series 900 OMNI-TRIM®

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 and Pressure Vessel Inspectors. Ask for Catalog No. 902. 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
Series 800 Adjustable Blowdown

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. Ask for Catalog No. 902. 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

Series 800 and 900 Connection Configurations

(Series 900 Illustrated)

Standard Threaded MNPT x FNPT
Standard
Threaded
MNPT X
FNPT
Threaded FNPT X FNPT
Threaded
FNPT X
FNPT
Flange X Flange
Flange X
Flange
Male SW X Male SW (Socket Weld)
Male SW X
Male SW
(Socket
Weld)

Ask for Catalog No. 902.

Pressure Relief Valves for Power Plants

HS/HSU and HSA/HSAU Safety Valves

Styles HS/HSU and HSA/HSAU Safety Valves

A rugged line of full nozzle high capacity flanged valves for saturated and superheated steam service. Ask for Catalog No. 405. 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
HSJ High Performance Safety Valve

Style HSJ High Performance Safety Valve

Full nozzle safety valve designed for saturated and superheated steam service. Ask for Catalog No. 407. 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

*Dowtherm is a trademark of the Dow Chemical Company

HC and HCA Safety Valves

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. Ask for Catalog No. 403. 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
HCI ISOFLEX™ Safety Valve

Styles HCI ISOFLEX™ Safety Valve

Nozzle type safety valve for saturated and superheated steam service. Seat tightness up to 95% of valve set pressure. Ask for Catalog No. 408. 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
HE Safety Valve

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). Ask for Catalog No. 403. 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

Styles HPV and HPV-ST PRESSURMATIC® Vent Valves with APS2 Controller

HPV and HPV-ST PRESSURMATIC® Vent Valves
Style HPV-ST
 
HPV and HPV-ST PRESSURMATIC® Vent Valves APS2 Controller
Style APS2
Controller

Protect superheaters from overheating during startup, prolong the life and reduce maintenace of safety valves. Ask for Catalog No. 403. 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)