1650-00-699-0519 GUARD,CONTROL,VALVE Index 4820-00-699-0522 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-699-0521

Federal Supply Class:
4820

National Item Identification Number:
006990521

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:
8022580KDP7KIDDE-FENWAL, INC.
83170332762GRINDLEY MANUFACTURING INC.
K80225816004DAVEY COMPRESSOR CO DIV OF KECO INDUSTRIES INC
K80225858163MEGGITT (NORTH HOLLYWOOD), INC.
K80225862228MEGGITT DEFENSE SYSTEMS, INC.


Techincal Specification:
CONNECTION STYLEFLARED (TUBE) 1ST END
CONNECTION STYLEPLAIN (PIPE) 2ND END
CONNECTION TYPETHREADED EXTERNAL PIPE 2ND END
CONNECTION TYPETHREADED EXTERNAL TUBE 1ST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/4,ALLOY2014 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIALALUMINUM ALLOY 2014 BODY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES 1ST END
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES 2ND END
NOMINAL THREAD SIZE0.125 INCHES 2ND END
NOMINAL THREAD SIZE0.437 INCHES 1ST END
SEAT ANGLE37.0 DEGREES 1ST END
STYLE DESIGNATORANGLE
SURFACE TREATMENTANODIZE
THREAD CLASS3B 1ST END
THREAD DIRECTIONRIGHT-HAND 1ST END
THREAD DIRECTIONRIGHT-HAND 2ND END
THREAD QUANTITY PER INCH20 1ST END
THREAD QUANTITY PER INCH27 2ND END
THREAD SERIES DESIGNATORNPT 2ND END
THREAD SERIES DESIGNATORUNF 1ST END
VALVE OPERATION METHODAUTOMATIC


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