4820-01-339-7821 VALVE,SAFETY RELIEF Index 4820-01-339-7823 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-339-7822

Federal Supply Class:
4820

National Item Identification Number:
013397822

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:
5159A-4TB-115091816CIRCOR AEROSPACE, INC.


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+680.0 TO 1210.0 POUNDS PER SQUARE INCH
CONNECTION TYPETHREADED EXTERNAL TUBE 1ST ENDTHREADED INTERNAL BOSS 2ND END
CONNECTION STYLEFLARED (TUBE) 1ST ENDGASKET SEAL(BOSS) 2ND END
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM ALLOY 2024 BODY
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDHELIUM 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDNITROGEN, GASEOUS 4TH RESPONSE
MEDIA FOR WHICH DESIGNEDOIL, HYDRAULIC 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDWATER, FRESH 5TH RESPONSE
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS
OPENING PRESSURE SETTING1150.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES 1ST END
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD CLASS3A 1ST END
THREAD CLASS3B 2ND END
THREAD SERIES DESIGNATORUNF 2ND END
THREAD SERIES DESIGNATORUNJF 1ST END
THREAD QUANTITY PER INCH20 1ST END
VALVE OPERATION METHODAUTOMATIC


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