Relief Valves

Relief Valves

Relief Valves

Hansen Pressure Relief Valves for Ammonia and Halocarbon Gas Service Safety Relief to Atmosphere. Hansen safety relief valves in types: H5600R, H5600A, H5601, H5602, H5602R, H5632R, H5613, H5633R, H5604, H5634R. The H5600 “R” series valves have reduced capacities.

Hansen pressure relief valves help meet the requirements of ANSI/ASHRAE 15 Safety Standard for Refrigeration Systems as well as other worldwide codes. This standard requires pressure vessels of all refrigeration systems to be protected by a pressure-relief device or other approved means to safely relieve pressure in the event of fire or other abnormal conditions.

Once installed, a properly selected Hansen pressure-relief valve is ready to vent to atmosphere any temporary excessive overpressure inside of a vessel. After discharge, these valves will attempt to reseat to minimize loss of refrigerant. However, once any relief valve has discharged, it must be replaced as soon as possible because debris may have settled on the seat during discharge. Hansen pressure-relief valves should be connected to the vapor space of refrigerant vessels, heat exchangers, oil pots, oil stills, pilot receivers, and elsewhere as may be required by various codes.

Where dual pressure-relief valves are required, Hansen offers the three-way valves and other components necessary for assembly; see page 4. Rupture disc assemblies are required when using Hansen pressurerelief valves for halocarbon applications because the high cost of such refrigerants demands extreme tightness, see bulletin K209.

Hansen EZ-SRV Cartridge Pressure Relief valves protect refrigeration pressure vessels and other refrigeration system components from excessive pressure. If an abnormally high pressure occurs, the cartridge pressure-relief valve will open to relieve the excess pressure, preventing potential damage to equipment and injury to personnel.

Hansen rupture disc assemblies (RDAs) are used to indicate which pressure-relief valve has discharged. A pressure-relief valve will re-seat after discharging. However, a rupture disc remains open after bursting. (A rupture disc is not a stand alone safety device.) An installed pressure gauge or switch (required by code) provides a visual or electronic indication that the rupture disc has burst.

Also, rupture disc assemblies provide a hermetic seal to help eliminate any possibility of minute losses of refrigerant via pressure-relief valve seat materials. Hansen rupture disc assemblies are designed with a double-weld construction. There are no gaskets to leak. The rupture disc inside the assembly is patented hermetically welded to the body and mechanically isolated from any pipe stress. A separate body weld seals the assembly. This design helps eliminate internal and external leaks and ensures that the disc will burst at its design pressure.

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428 items

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  1. H5634R/150-P Hansen NH3 Pressure Relief Valve, 1-1/4 H5634R/150-P Hansen NH3 Pressure Relief Valve, 1-1/4
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    H5634R/150-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @150 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $844.07
  2. H5634R/200-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @200 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  3. H5634R/250-P Hansen NH3 Pressure Relief Valve, 1-1/4 H5634R/250-P Hansen NH3 Pressure Relief Valve, 1-1/4
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    H5634R/250-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @250 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  4. H5634R/300-P Hansen NH3 Pressure Relief Valve, 1-1/4 H5634R/300-P Hansen NH3 Pressure Relief Valve, 1-1/4
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    H5634R/300-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @300 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $916.70
  5. H5634R/350-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @350 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  6. H5634R/400-P Hansen NH3 Pressure Relief Valve, 1-1/4" x 1-1/2, Reduced Capacity, Set @400 PSIG with Pop-Eye
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  7. H5604/225-P Hansen NH3 Pressure Relief Valve, Pop-Eye, 1-1/4" x 1-1/2", Set @225 PSI
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  8. H5604/275-P Hansen NH3 Pressure Relief Valve, Pop-Eye, 1-1/4" x 1-1/2", Set @275 PSI
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  9. H5604D/225-P Hansen Dual Pressure Relief Valve Kit, 1-1/4" x 1-1/2", Pop-Eye, Set @225
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  10. H5604D/275-P Hansen Dual Pressure Relief Valve Kit, 1-1/4" x 1-1/2", Pop-Eye, Set @275
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  11. H5634R/225-P Hansen NH3 Relief Valve, Mid-Flow, Pop-Eye, 1-1/4" x 1-1/2", Set @225 PSI
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  12. H5634R/275-P Hansen NH3 Relief Valve, Mid-Flow, Pop-Eye, 1-1/4" x 1-1/2", Set @275 PSI
    List Price $1,513.00 List Price $1,513.00 Web Price $865.44
  13. H5634RD/400-P Hansen Dual Pressure Relief Valve, 1-1/4" x 1-1/2", Reduced, Pop-Eye, Set @400
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  14. H5634RD/200-P Hansen Dual Relief Valve, 1-1/4" x 1-1/2" Reduced, Pop-Eye, Set @200PSIg
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  15. H5634RD/225-P Hansen Dual Relief Valve, 1-1/4" x 1-1/2" Reduced, Pop-Eye, Set @225PSIg
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  16. H5634RD/275-P Hansen Dual Relief Valve, 1-1/4" x 1-1/2" Reduced, Pop-Eye, Set @275PSIg
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  17. H5634RD/150-P Hansen Dual Pressure Relief Valve, 1-1/4" x 1-1/2" Reduced Capacity, Set@150 Psig with Pop-Eye
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  18. H5634RD/250-P Hansen Dual Pressure Relief Valve, 1-1/4" x 1-1/2" Reduced Capacity, Set@250 Psig with Pop-Eye
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  19. H5634RD/300-P Hansen Dual Pressure Relief Valve, 1-1/4" x 1-1/2" Reduced Capacity, Set@300 Psig with Pop-Eye
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  20. H5634RD/350-P Hansen Dual Pressure Relief Valve, 1-1/4" x 1-1/2" Reduced Capacity, Set@350 Psig with Pop-Eye
    List Price $3,894.00 List Price $3,894.00 Web Price $2,227.37
  21. H5634RD Dual Hansen Pressure Relief Valve, 1-1/4" x 1-1/2" Reduced Capacity with Pop-Eye
    List Price $3,894.00 List Price $3,894.00 As low as $0.00
  22. H8021W Hansen 1/2" (13 mm) Three-Way Dual Shut-off Valve, 1/2" Butt Weld
    List Price $451.00 List Price $451.00 Web Price $257.97
  23. Hansen EZB/150-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  24. Hansen EZB/200-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  25. Hansen EZB/225-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  26. Hansen EZB/250-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  27. Hansen EZB/300-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  28. Hansen EZB/400-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  29. Hansen EZB/550-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  30. Hansen EZB/L2-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $585.00 List Price $585.00 Web Price $334.62
  31. Hansen EZLQ/100-BW1, EZLQ Liquid Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $591.00 List Price $591.00 Web Price $338.05
  32. Hansen EZLQ/50-BW1, EZLQ Liquid Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $591.00 List Price $591.00 Web Price $338.05
  33. Hansen EZLQ/75-BW1, EZLQ Liquid Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $591.00 List Price $591.00 Web Price $338.05
  34. Hansen EZB/M1-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $585.00 List Price $585.00 Web Price $334.62
  35. Hansen EZB/M2-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/ Fitting
    List Price $585.00 List Price $585.00 Web Price $334.62
  36. Hansen EZLQ/7.0PA-BW1, EZLQ Liquid Relief Valve, 1/2" Butt Weld w/ Fitting(PASCALS)
    List Price $571.00 List Price $571.00 Web Price $326.61
  37. Hansen EZB/16E-BW1, EZ-SRV CART Relief, 1/2" Butt Weld w/ FTG, CATIV, MOD B & D, EF104
    List Price $606.00 List Price $606.00 Web Price $346.63
  38. Hansen EZB/H2-BW1, EZ-Relief Valve Cartridge Relief Valve, 1/2" Butt Weld w/Fitting
    List Price $585.00 List Price $585.00 Web Price $334.62
  39. Hansen EZB/H3E-BT1D, EZ-Relief Valve Dual Relief, 1/2" FPT, CE-CATIV.MODB&D EF104
    List Price $1,530.00 List Price $1,530.00 Web Price $875.16
  40. H5600R Hansen NH3 Single Pressure Relief Valve with POP-EYE, 1/2" FPT x 3/4" FPT, Reduced Capacity
    List Price $555.00 List Price $555.00 As low as $297.59
  41. Hansen RDA1/150, Rupture Disc Assembly, 1/2" MPT, w/Two 1/8" Connection, SET@150PSI
    List Price $744.00 List Price $744.00 Web Price $425.57
  42. Hansen RDA1/300, Rupture Disc Assembly, 1/2" MPT, w/Two 1/8" Connection, SET@300PSI
    List Price $744.00 List Price $744.00 Web Price $425.57
  43. Hansen EZB/150-BT1, EZ-Relief Valve Cartridge Relief Valve, 1/2" MPT w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
  44. Hansen EZB/200-BT1, EZ-Relief Valve Cartridge Relief Valve, 1/2 Hansen EZB/200-BT1, EZ-Relief Valve Cartridge Relief Valve, 1/2
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    Hansen EZB/200-BT1, EZ-Relief Valve Cartridge Relief Valve, 1/2" MPT w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $348.22
  45. Hansen EZB/225-BT1, EZ-Relief Valve Cartridge Relief Valve, 1/2" MPT w/ Fitting
    List Price $606.00 List Price $606.00 Web Price $346.63
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