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Pressure Relief Valves

Pressure Relief Valves

Pressure Relief Valves

Designed to provide emergency relief from excessive pressure in refrigerant-containing vessels, they are built in strict conformance with ASME Boiler and Pressure Vessel Code requirements for safety relief devices. Each valve bears the ASME code symbol of certification (UV). Their capacities are rated by the National Board of Boiler and Pressure Vessel Inspectors. These tamper-resistant valves are accurately set and sealed by qualified technicians at the factory. POP-EYE will be standard on all H56xx series valves beginning with the H56xx”R” series in July 2019. All other H56xx series valves will become standard with POP-EYE by August 2019.

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. Also, see Bulletin K129 for information on the EZ-SRV Relief Valves. These pressure-relief valves offer a cartridge style design for ease of replacement without disturbing the piping. EZ-SRV pressure-relief valves are available in pressure ratings to 600 psi (matching the H5600 “R” series capacities through 400 psi). Liquid relief valves are also available in the EZ-SRV series. EZLQ relief valves are designed and rated for liquid applications.

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Categories
Standard Capacity
Standard Capacity
Reduced Capacity
Reduced Capacity
High Capacity CO2
High Capacity CO2
Dual Pressure Relief Kits
Dual Pressure Relief Kits
Pop-Eye Insight
Pop-Eye Insight

178 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 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
  4. 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
  5. 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
  6. 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
  7. Hansen H5602/200-P NH3 Pressure Relief Valve 3/4 Hansen H5602/200-P NH3 Pressure Relief Valve 3/4
    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 $407.65
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. Hansen H5602/150-P NH3 Pressure Relief Valve 3/4 Hansen H5602/150-P NH3 Pressure Relief Valve 3/4
    SHIPS TODAY
    Hansen H5602/150-P NH3 Pressure Relief Valve 3/4" x 1", Set@150 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $419.88
  17. Hansen H5602/350-P NH3 Pressure Relief Valve 3/4 Hansen H5602/350-P NH3 Pressure Relief Valve 3/4
    Hansen H5602/350-P NH3 Pressure Relief Valve 3/4" x 1", Set@350 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $407.65
  18. Hansen H5613/150-P NH3 Pressure Relief Valve. 1 Hansen H5613/150-P NH3 Pressure Relief Valve. 1
    SHIPS TODAY
    Hansen H5613/150-P NH3 Pressure Relief Valve. 1" x 1-1/4", Set@150 PSIG, POP-EYE
    List Price $982.00 List Price $982.00 Web Price $577.65
  19. Hansen H5613/250-P NH3 Pressure Relief Valve 1 Hansen H5613/250-P NH3 Pressure Relief Valve 1
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    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
  20. Hansen H5602/275-P NH3 Pressure Relief Valve 3/4 Hansen H5602/275-P NH3 Pressure Relief Valve 3/4
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    Hansen H5602/275-P NH3 Pressure Relief Valve 3/4" x 1" Set@275 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $398.21
  21. 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
  22. H5632R/350-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4 H5632R/350-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4
    H5632R/350-P Hansen NH3 Pressure Relief Valve, Reduced Capacity, 3/4" x 1", Set@350 Psig with Pop-Eye
    List Price $693.00 List Price $693.00 Web Price $407.65
  24. Hansen H5600R/150-P NH3 Pressure Relief Valve 1/2 Hansen H5600R/150-P NH3 Pressure Relief Valve 1/2
    SHIPS TODAY
    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
  25. Hansen H5600RD/350-P Dual Pressure Relief Valve Kit 1/2 Hansen H5600RD/350-P Dual Pressure Relief Valve Kit 1/2
    Hansen H5600RD/350-P Dual Pressure Relief Valve Kit 1/2" x 3/4", NH3, Reduced Capacity, Set@350 PSIG, POP-EYE
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  26. Hansen H5601D/350-P Dual Pressure Relief Valve Kit 1/2 Hansen H5601D/350-P Dual Pressure Relief Valve Kit 1/2
    Hansen H5601D/350-P Dual Pressure Relief Valve Kit 1/2" x 1", NH3, Set@350 PSIG, POP-EYE
    List Price $1,474.00 List Price $1,474.00 Web Price $843.13
  27. Hansen H5602/225-P NH3 Pressure Relief Valve 3/4 Hansen H5602/225-P NH3 Pressure Relief Valve 3/4
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    Hansen H5602/225-P NH3 Pressure Relief Valve 3/4" x 1" Set@ 225 PSIG, POP-EYE
    List Price $693.00 List Price $693.00 Web Price $424.12
  28. Hansen H5613/350-P NH3 Pressure Relief Valve 1 Hansen H5613/350-P NH3 Pressure Relief Valve 1
    Hansen H5613/350-P NH3 Pressure Relief Valve 1" x 1-1/4" Set@350 PSIG, POP-EYE
    List Price $982.00 List Price $982.00 Web Price $577.65
  29. H5600AD/300-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600AD/300-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600AD/300-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", NH3, Set@300 Psig with Pop-Eye
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  30. 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
  31. Hansen H5600RD/300-P Dual Pressure Relief Valve Kit 1/2 Hansen H5600RD/300-P Dual Pressure Relief Valve Kit 1/2
    Hansen H5600RD/300-P Dual Pressure Relief Valve Kit 1/2" x 3/4", NH3, Reduced Capacity, Set@300 PSIG, POP-EYE
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  32. 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
  33. H5600A-PI Hansen Pop-Eye™ 1/2 H5600A-PI Hansen Pop-Eye™ 1/2
    H5600A-PI Hansen Pop-Eye™ 1/2" x 3/4" Insight NH3 Pressure-Relief Valves
    List Price $989.00 List Price $989.00 As low as $609.18
  34. H5600A/175-P Hansen Pressure Relief Valve, Pop-Eye, 1/2 H5600A/175-P Hansen Pressure Relief Valve, Pop-Eye, 1/2
    H5600A/175-P Hansen Pressure Relief Valve, Pop-Eye, 1/2" x 3/4", Set @175 PSI, Act
    List Price $575.00 List Price $575.00 Web Price $338.24
  35. H5600A/200-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/200-P Hansen NH3 Pressure Relief Valve 1/2
    H5600A/200-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@200 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  36. H5600A/225-P Hansen NH3 Pressure Relief Valve, Pop-Eye, 1/2 H5600A/225-P Hansen NH3 Pressure Relief Valve, Pop-Eye, 1/2
    H5600A/225-P Hansen NH3 Pressure Relief Valve, Pop-Eye, 1/2" x 3/4", Set @225PSI
    List Price $575.00 List Price $575.00 Web Price $338.24
  37. H5600A/275-P Hansen NH3 Pressure Relief Valve, 1/2 H5600A/275-P Hansen NH3 Pressure Relief Valve, 1/2
    H5600A/275-P Hansen NH3 Pressure Relief Valve, 1/2" x 3/4", Set@275 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  38. H5600A/350-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/350-P Hansen NH3 Pressure Relief Valve 1/2
    H5600A/350-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@350 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $338.24
  39. H5600A/400-P Hansen NH3 Pressure Relief Valve 1/2 H5600A/400-P Hansen NH3 Pressure Relief Valve 1/2
    SHIPS TODAY
    H5600A/400-P Hansen NH3 Pressure Relief Valve 1/2" x 3/4", Set@400 Psig with Pop-Eye
    List Price $575.00 List Price $575.00 Web Price $330.40
  40. H5600AD/150-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600AD/150-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600AD/150-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", NH3, Set@150 Psig with Pop-Eye
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  41. H5600AD/200-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600AD/200-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600AD/200-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", NH3, Set@200 Psig with Pop-Eye
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  42. H5600AD/225-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2 H5600AD/225-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2
    H5600AD/225-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2" x 3/4", NH3, Set @225
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  43. H5600AD/250-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600AD/250-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600AD/250-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", NH3, Set@250 Psig with Pop-Eye
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  44. H5600AD/275-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2 H5600AD/275-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2
    H5600AD/275-P Hansen Dual Pressure Relief Valve Kit, Pop-Eye, 1/2" x 3/4", NH3, Set @275
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
  45. H5600AD/350-P Hansen Dual Pressure Relief Valve Kit, 1/2 H5600AD/350-P Hansen Dual Pressure Relief Valve Kit, 1/2
    H5600AD/350-P Hansen Dual Pressure Relief Valve Kit, 1/2" x 3/4", NH3, Set@350 Psig with Pop-Eye
    List Price $1,466.00 List Price $1,466.00 Web Price $838.55
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