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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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Categories
Pressure Relief Valves
Pressure Relief Valves
Cartridge Relief Valves
Cartridge Relief Valves
Three-Way Valves
Three-Way Valves
Rupture Discs
Rupture Discs
Replacement Parts
Replacement Parts

428 items

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  1. Hansen H5600A NH3 Pressure Relief Valves - 1/2 Hansen H5600A NH3 Pressure Relief Valves - 1/2
    H5600A Hansen NH3 Pressure Relief Valves with POP-EYE - 1/2" FPT x 3/4" FPT
    List Price $575.00 List Price $575.00 As low as $0.00
  2. H5600A/250-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/250-P Hansen NH3 Pressure Relief Valve 1/2
    H5600A/250-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@250 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  3. Hansen H5600R/300-P NH3 Pressure Relief Valve 1/2 Hansen H5600R/300-P NH3 Pressure Relief Valve 1/2
    Hansen H5600R/300-P NH3 Pressure Relief Valve 1/2" x 3/4", Reduced Capacity, Set@300 PSIG, POP-EYE
    List Price $575.00 List Price $575.00 Web Price $338.24
  4. Hansen H5602/250-P NH3 Pressure Relief Valve 3/4 Hansen H5602/250-P NH3 Pressure Relief Valve 3/4
    Hansen H5602/250-P NH3 Pressure Relief Valve 3/4" x 1", Set@250 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $407.65
  5. Hansen H5600R/250-P NH3 Pressure Relief Valve 1/2 Hansen H5600R/250-P NH3 Pressure Relief Valve 1/2
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    Hansen H5600R/250-P NH3 Pressure Relief Valve 1/2" x 3/4", Reduced Capacity, Set@250 PSIG, POP-EYE
    List Price $575.00 List Price $575.00 Web Price $348.38
  6. H8021 Hansen 1/2 H8021 Hansen 1/2
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    H8021 Hansen 1/2" (13 mm) Three-Way Dual Shut-Off Valve, 1/2" FPT Connection
    List Price $389.00 List Price $389.00 Web Price $235.69
  7. Hansen H5600A/150, NH3 Pressure-Relief Valve 1/2X3/4, SET@150 PSI Hansen H5600A/150, NH3 Pressure-Relief Valve 1/2X3/4, SET@150 PSI
    Hansen H5600A/150, NH3 Pressure-Relief Valve 1/2X3/4, SET@150 PSI
    Web Price $326.47
  8. Hansen H5601 Pressure Relief Valves with Pop-Eye - image of dual and single pressure relief valves. Hansen H5601 Pressure Relief Valves with Pop-Eye - image of dual and single pressure relief valves.
    H5601 Hansen Pressure Relief Valves with POP-EYE, 1/2" FPT X 1" FPT
    List Price $1,474.00 List Price $1,474.00 As low as $0.00
  9. Hansen 3-way Dual shut-off valve with label showing size, cat #, series and psig. SKU H8022. Hansen 3-way Dual shut-off valve with label showing size, cat #, series and psig. SKU H8022.
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    H8022 Hansen 3/4" (20 mm) Three-Way Shut-Off Valve, 3/4" FPT Connection
    List Price $408.00 List Price $408.00 Web Price $240.00
  10. H5600A/150-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/150-P Hansen NH3 Pressure Relief Valve 1/2
    H5600A/150-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@150 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  11. Close-up image of 40-1003 Hansen Blue Install Date Tag Kit. Close-up image of 40-1003 Hansen Blue Install Date Tag Kit.
    40-1003 Hansen Blue Install Date Tag Kit
    List Price $24.00 List Price $24.00 Web Price $21.18
  12. Hansen pressure relief valves with Pop-Eye - Image of dual and single pressure relief valves. Hansen pressure relief valves with Pop-Eye - Image of dual and single pressure relief valves.
    H5602 Hansen Pressure Relief Valves with POP-EYE, 3/4" FPT x 1" FPT
    List Price $1,718.00 List Price $1,718.00 As low as $0.00
  13. Hansen Pressure Relief Valve with Pop-Eye - Front view Hansen Pressure Relief Valve with Pop-Eye - Front view
    H5632R Hansen Pressure Relief Valves with POP-EYE, Reduced Capacity, 3/4" FPT x 1" FPT
    List Price $693.00 List Price $693.00 As low as $0.00
  14. Hansen H5601/300-P NH3 Pressure Relief Valve 1/2 Hansen H5601/300-P NH3 Pressure Relief Valve 1/2
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    Hansen H5601/300-P NH3 Pressure Relief Valve 1/2" x 1", Set@300 PSIG, POP-EYE
    List Price $579.00 List Price $579.00 Web Price $355.11
  15. H5600R Hansen 1/2 H5600R Hansen 1/2
    H5600R Hansen NH3 Single Pressure Relief Valve with POP-EYE, 1/2" FPT x 3/4" FPT, Reduced Capacity
    List Price $575.00 List Price $575.00 As low as $308.31
  16. Hansen H5601/250-P NH3 Pressure Relief Valve 1/2 Hansen H5601/250-P NH3 Pressure Relief Valve 1/2
    SHIPS TODAY
    Hansen H5601/250-P NH3 Pressure Relief Valve 1/2" x 1", Set@250 PSIG, POP-EYE
    List Price $579.00 List Price $579.00 Web Price $340.59
  17. Hansen H5602R/250-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4 Hansen H5602R/250-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4
    Hansen H5602R/250-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4" x 1", Set@ 250 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $407.65
  18. H5632R/300-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4 H5632R/300-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4
    H5632R/300-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4" x 1", Set@300 Psig with Pop-Eye
    List Price $693.00 List Price $693.00 Web Price $407.65
  19. Hansen 40-1004, Kit, Green Install Date Tag Hansen 40-1004, Kit, Green Install Date Tag
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    Hansen 40-1004, Kit, Green Install Date Tag
    List Price $24.00 List Price $24.00 Web Price $21.81
  20. H5600A/300-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/300-P Hansen NH3 Pressure Relief Valve 1/2
    H5600A/300-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@300 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  21. Hansen Pressure Relief Valve with POP-EYE - Front view Hansen Pressure Relief Valve with POP-EYE - Front view
    H5602R Hansen Pressure Relief Valves with POP-EYE, Reduced Capacity, 3/4" FPT x 1" FPT
    List Price $693.00 List Price $693.00 As low as $0.00
  22. Hansen EZC/250, EZ-Relief Valve Cartridge Relief Valve, Bare Hansen EZC/250, EZ-Relief Valve Cartridge Relief Valve, Bare
    Hansen EZC/250, EZ-Relief Valve Cartridge Relief Valve, Bare
    List Price $485.00 List Price $485.00 Web Price $285.29
  23. Hansen H5602/300-P NH3 Pressure Relief Valve 3/4 Hansen H5602/300-P NH3 Pressure Relief Valve 3/4
    Hansen H5602/300-P NH3 Pressure Relief Valve 3/4" x 1", Set@300 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $407.65
  24. H5632R/250-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4 H5632R/250-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4
    SHIPS TODAY
    H5632R/250-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4" x 1", Set@250 Psig with Pop-Eye
    List Price $693.00 List Price $693.00 Web Price $407.65
  25. Hansen H5600R/150-P NH3 Pressure Relief Valve 1/2 Hansen H5600R/150-P NH3 Pressure Relief Valve 1/2
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    Hansen H5600R/150-P NH3 Pressure Relief Valve 1/2" x 3/4", Reduced Capacity, Set@150 PSIG, POP-EYE
    List Price $575.00 List Price $575.00 Web Price $338.24
  26. H5604 Hansen Pressure Relief Valve, 1-1/4 H5604 Hansen Pressure Relief Valve, 1-1/4
    H5604 Hansen Pressure Relief Valve, 1-1/4" x 1-1/2" with Pop-Eye
    List Price $1,566.00 List Price $1,566.00 As low as $899.85
  27. Hansen Pressure Relief Valve with Pop-Eye - Front view Hansen Pressure Relief Valve with Pop-Eye - Front view
    H5613 Hansen Pressure Relief Valves with POP-EYE, 1" FPT x 1-1/4" FPT
    List Price $982.00 List Price $982.00 As low as $0.00
  28. Hansen H5602/200-P NH3 Pressure Relief Valve 3/4 Hansen H5602/200-P NH3 Pressure Relief Valve 3/4
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    Hansen H5602/200-P NH3 Pressure Relief Valve 3/4" x 1", Set@200 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $419.88
  29. Hansen H5604/300-P NH3 Pressure Relief Valve 1-1/4 Hansen H5604/300-P NH3 Pressure Relief Valve 1-1/4
    Hansen H5604/300-P NH3 Pressure Relief Valve 1-1/4" x 1-1/2", Set@300 PSIG, POP-EYE
    List Price $1,566.00 List Price $1,566.00 Web Price $921.18
  30. Hansen H5604/350-P NH3 Pressure Relief Valve 1-1/4 Hansen H5604/350-P NH3 Pressure Relief Valve 1-1/4
    Hansen H5604/350-P NH3 Pressure Relief Valve 1-1/4" x 1-1/2", Set@350 PSIG, POP-EYE
    List Price $1,566.00 List Price $1,566.00 Web Price $921.18
  31. Hansen H5613/300-P NH3 Pressure Relief Valve 1 Hansen H5613/300-P NH3 Pressure Relief Valve 1
    Hansen H5613/300-P NH3 Pressure Relief Valve 1" x 1-1/4" Set@300 PSIG, POP-EYE
    List Price $982.00 List Price $982.00 Web Price $577.65
  32. H5600RD/275-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600RD/275-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600RD/275-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", Pop-Eye, Reduced, Set @275
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  33. H8022S Hansen 3/4 H8022S Hansen 3/4
    H8022S Hansen 3/4" (20 mm) Three-Way Dual Shut-Off Valve, 3/4" Socket-Weld Connection
    List Price $486.00 List Price $486.00 Web Price $285.88
  34. Hansen H5600R/200-P NH3 Pressure Relief Valve 1/2 Hansen H5600R/200-P NH3 Pressure Relief Valve 1/2
    Hansen H5600R/200-P NH3 Pressure Relief Valve 1/2" x 3/4", Reduced Capacity, Set@200 PSIG, POP-EYE
    List Price $575.00 List Price $575.00 Web Price $338.24
  35. Hansen pressure relief valve with Pop-Eye and relief valve tag. Hansen pressure relief valve with Pop-Eye and relief valve tag.
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    Hansen H5601/150-P NH3 Pressure Relief Valve with POP-EYE, 1/2" x 1", 150 PSIG
    List Price $579.00 List Price $579.00 Web Price $388.20
  36. Hansen H5602R/150-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4 Hansen H5602R/150-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4
    SHIPS TODAY
    Hansen H5602R/150-P NH3 Pressure Relief Valve, Reduced Capacity, 3/4" x 1", Set@150 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $407.65
  37. Hansen H5604/250-P NH3 Pressure Relief Valve 1-1/4 Hansen H5604/250-P NH3 Pressure Relief Valve 1-1/4
    Hansen H5604/250-P NH3 Pressure Relief Valve 1-1/4" x 1-1/2", Set@250 PSIG, POP-EYE
    List Price $1,566.00 List Price $1,566.00 Web Price $921.18
  38. Hansen H5613/250-P NH3 Pressure Relief Valve 1 Hansen H5613/250-P NH3 Pressure Relief Valve 1
    Hansen H5613/250-P NH3 Pressure Relief Valve 1" x 1-1/4", Set@250 PSIG, POP-EYE
    List Price $982.00 List Price $982.00 Web Price $577.65
  39. Hansen RDA2/250, Rupture Disc Assembly, 3/4 Hansen RDA2/250, Rupture Disc Assembly, 3/4
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    Hansen RDA2/250, Rupture Disc Assembly, 3/4" MPT, w/Two 1/8" Connection, SET@250PSI
    List Price $991.00 List Price $991.00 Web Price $600.43
  40. H5602D/275-P Hansen Dual Pressure Relief Valve Kit 3/4 H5602D/275-P Hansen Dual Pressure Relief Valve Kit 3/4
    H5602D/275-P Hansen Dual Pressure Relief Valve Kit 3/4" x 1", Pop-Eye, Set @275PSI
    List Price $1,718.00 List Price $1,718.00 Web Price $982.70
  41. H8024 Hansen 1 H8024 Hansen 1
    H8024 Hansen 1" (25 mm) Three-Way Dual Shut-Off Valve, 1" FPT Connection
    List Price $645.00 List Price $645.00 Web Price $379.41
  42. Hansen EZB/250, EZ-Relief Valve Cartridge Relief Valve, Bare Hansen EZB/250, EZ-Relief Valve Cartridge Relief Valve, Bare
    Hansen EZB/250, EZ-Relief Valve Cartridge Relief Valve, Bare
    List Price $418.00 List Price $418.00 Web Price $245.88
  43. Hansen EZB/300, EZ-Relief Valve Cartridge Relief Valve, Bare Hansen EZB/300, EZ-Relief Valve Cartridge Relief Valve, Bare
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    Hansen EZB/300, EZ-Relief Valve Cartridge Relief Valve, Bare
    List Price $418.00 List Price $418.00 Web Price $253.26
  44. Hansen EZLQ/100-BT1, EZLQ Liquid Relief Valve, 1/2 Hansen EZLQ/100-BT1, EZLQ Liquid Relief Valve, 1/2
    Hansen EZLQ/100-BT1, EZLQ Liquid Relief Valve, 1/2" MPT w/ Fitting
    List Price $612.00 List Price $612.00 Web Price $360.00
  45. Hansen H5601/350-P NH3 Pressure Relief Valve, 1/2 Hansen H5601/350-P NH3 Pressure Relief Valve, 1/2
    SHIPS TODAY
    Hansen H5601/350-P NH3 Pressure Relief Valve, 1/2" x 1", Set@350 PSIG, POP-EYE
    List Price $579.00 List Price $579.00 Web Price $350.81
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