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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

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Unit of Measure

Items	A 18736 SAFETYMASTER® Pressure Relief Valves - Straight Thru - NPTFE Inlet to NPTFI Outlet	A 18762 SAFETYMASTER® Pressure Relief Valves - Straight Thru - NPTFE Inlet to NPTFI Outlet	A 15506 SAFETYMASTER® Pressure Relief Valves - Straight Thru - NPTFE Inlet to NPTFI Outlet	A 17840 SAFETYMASTER® Pressure Relief Valves - Straight Thru - NPTFE Inlet to NPTFI Outlet	A 18735 SAFETYMASTER® Pressure Relief Valves - Straight Thru - NPTFE Inlet to NPTFI Outlet
Connection Size	N/A 3/8 in	N/A 1/2 in	N/A 3/4 in	N/A 1 in	N/A 3/4 in
End Type	N/A NPTFE
Second Connection Size	N/A 3/4 in	N/A 3/4 in	N/A 3/4 in	N/A 1 in	N/A 1 in
Second End Type	N/A NPTFI
A	N/A 3/8 in	N/A 1/2 in	N/A 3/4 in	N/A 1 in	N/A 3/4 in
B	N/A 0.75 in	N/A 0.75 in	N/A 0.75 in	N/A 1.00 in	N/A 1.00 in
C	N/A 4 in102 mm	N/A 4 in102 mm	N/A 4.95 in126 mm	N/A 4.6 in117 mm	N/A 4.6 in117 mm
Operating Pressure [Min]	N/A 150 psi
Operating Pressure [Max]	N/A 700 psi	N/A 700 psi	N/A 450 psi	N/A 450 psi	N/A 450 psi
Weight	N/A 0.45 kg0.98 lb	N/A 0.43 kg0.94 lb	N/A 0.69 kg1.53 lb	N/A 0.66 kg1.45 lb	N/A 0.68 kg1.49 lb
Operating Temperature [Min]	N/A -40 ºC-40 ºF
Operating Temperature [Max]	N/A 149 ºC300 ºF

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