4820-01-200-1726 VALVE,SAFETY RELIEF Index 5985-01-200-1728 WAVEGUIDE ASSEMBLY

National Stock Number:
4820-01-200-1727

Federal Supply Class:
4820

National Item Identification Number:
012001727

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:
4820PL13284589009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
5159A-8TB-30091816CIRCOR AEROSPACE, INC.
533590615090RAYTHEON COMPANY
533590653711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+240.0 TO 360.0 POUNDS PER SQUARE INCH
CONNECTION TYPETHREADED INTERNAL BOSS 1ST END
CONNECTION TYPETHREADED INTERNAL BOSS 2ND END
CONNECTION STYLEFLARED (TUBE) 1ST END
CONNECTION STYLEGASKET SEAL(BOSS) 2ND END
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM ALLOY 2024 BODY
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEAT
MAXIMUM OPERATING PRESSURE2500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-40.0 FAHRENHEIT 1ST RESPONSE
MAXIMUM OPERATING TEMP275.0 FAHRENHEIT 2ND 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 SIZE0.750 INCHES ALL ENDS
OPENING PRESSURE SETTING300.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF SEPARABLE SECTIONS.
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE
SURFACE TREATMENTANODIZE
THREAD CLASS3A 1ST END
THREAD CLASS3B 2ND END
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATORUNF 2ND END
THREAD SERIES DESIGNATORUNJF 1ST END
VALVE OPERATION METHODAUTOMATIC


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