4820-01-313-8645 VALVE,SAFETY RELIEF Index 4820-01-313-8647 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-313-8646

Federal Supply Class:
4820

National Item Identification Number:
013138646

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:
7M304D4-010076301THE BOEING COMPANY
RV05-48-010091816CIRCOR AEROSPACE, INC.


Techincal Specification:
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODTHREADED
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
FLOW CONTROL DEVICEPOPPET
OPENING PRESSURE SETTING100.0 POUNDS PER SQUARE INCH
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALALUMINUM ALLOY BODY
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDGAS, INERT SINGLE RESPONSE
MINIMUM OPERATING TEMP-40.0 FAHRENHEIT
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS
SEAT ANGLE37.0 DEGREES ALL ENDS
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU W/BAFFLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENTANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD QUANTITY PER INCH18 ALL ENDS
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) ALL ENDS


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