4820-01-272-8735 VALVE,SAFETY RELIEF Index 4210-01-272-8737 HOSE ASSEMBLY,METALLIC,FIRE FIGH

National Stock Number:
4820-01-272-8736

Federal Supply Class:
4820

National Item Identification Number:
012728736

Description:
VALVE,SAFETY RELIEF

Detail:
A valve designed to automatically release excessive pressures. It is actuated by static pressure upstream of the valve and is used as a safety valve or relief valve, and may be set to close at a predetermined pressure. It is not designed for regulation of continuously fluctuating loads. It may be inline or cartridge (manifold) design. Excludes VALVE (1), RELIEF, PRESSURE AND TEMPERATURE.


Manufacturer Information:
D577T1-24D-591816CIRCOR AEROSPACE, INC.


Techincal Specification:
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODTHREADED
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
CRITICALITY CODE JUSTIFICATIONFEAT
FLOW CONTROL DEVICEPOPPET
MATERIALSTEEL CORROSION RESISTING BODY
PROPRIETARY CHARACTERISTICSPACS
MAXIMUM OPERATING TEMP275.0 DEG FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON 2ND RESPONSE
NOMINAL THREAD SIZE1.875 INCHES ALL ENDS
OPENING PRESSURE SETTING5.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES ALL ENDS
SPECIAL FEATURESMILITARY SENSITIVE WARFARE
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD QUANTITY PER INCH12 ALL ENDS
THREAD SERIES DESIGNATORUN ALL ENDS


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