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Features:
  • Temperature Range: -40°F/300°F, -40°C/149°C
  • Designed primarily for use on liquid receiver applications above the liquid refrigerant level (it is recommended that the factory be consulted before the valves are used on other applications)
  • Satisfy ASHRAE Standard 15 code requirements for a refrigerant vessel safety device (Application information can also be found in ASHRAE Guide and Data Book)
  • Comply with ASME code for unfired pressure vessels Discharge rates are certified by National Board of Boiler & Pressure Vessel Inspectors
  • Designed for maximum discharge capacities
  • Conforms to Pressure Equipment Directive 2014/68/EU, CRN, Compatible with all CFC, HCFC and HFC refrigerants and oils
  • CRN 0G0314.9C
  • SAFETYMASTER® Pressure Relief Valves - Internal
    SAFETYMASTER® Pressure Relief Valves - Internal - Dimensions
    Unit of Measure
    Items SAFETYMASTER® Pressure Relief Valves - Internal
    B 34425
    SAFETYMASTER® Pressure Relief Valves - Internal
    SAFETYMASTER® Pressure Relief Valves - Internal
    A 17970
    SAFETYMASTER® Pressure Relief Valves - Internal
    SAFETYMASTER® Pressure Relief Valves - Internal
    A 18473
    SAFETYMASTER® Pressure Relief Valves - Internal
    Connection Size N/A 3/4 in N/A 1 in N/A 1 1/2 in
    End Type N/A NPTFE
    Weight N/A 0.16 kg0.36 lb N/A 0.26 kg0.57 lb N/A 0.78 kg1.73 lb
    Operating Pressure [Min] N/A 150 psi
    Operating Pressure [Max] N/A 700 psi N/A 450 psi N/A 450 psi
    Operating Temperature [Min] N/A -40 ºC-40 ºF
    Operating Temperature [Max] N/A 149 ºC300 ºF