4820-01-283-1832 VALVE,SAFETY RELIEF Index 4820-01-283-1834 VALVE,BUTTERFLY

National Stock Number:
4820-01-283-1833

Federal Supply Class:
4820

National Item Identification Number:
012831833

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:
5177T-4TT-2591816CIRCOR AEROSPACE, INC.
553814453711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
FLOW CONTROL DEVICEPOPPET
MATERIALSTEEL CORROSION RESISTING BODY
MAXIMUM OPERATING TEMP-65.0 FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT 2ND RESPONSE
MAXIMUM OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
MEDIA FOR WHICH DESIGNEDALCOHOL, ETHYL 2ND RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, LIQUID 4TH RESPONSE
MEDIA FOR WHICH DESIGNEDAMMONIA, GASEOUS 3RD RESPONSE
MEDIA FOR WHICH DESIGNEDREFRIGERANT 12 5TH RESPONSE
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS
OPENING PRESSURE SETTING25.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
THREAD CLASS3A ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUNJF ALL ENDS
THREAD QUANTITY PER INCH20 ALL ENDS
VALVE OPERATION METHODAUTOMATIC


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