4820-01-338-2020 VALVE,SAFETY RELIEF Index 4820-01-338-2022 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-338-2021

Federal Supply Class:
4820

National Item Identification Number:
013382021

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:
5377T-8BB-573091816CIRCOR AEROSPACE, INC.


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.
VALVE OPERATION METHODAUTOMATIC
MATERIALSTEEL COMP 303 BODY
STEEL CORROSION RESISTING SEAT
STEEL COMP 303 STEM
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDOIL, HYDRAULIC SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE10500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-45.0 DEG FAHRENHEIT 1ST RESPONSE
250.0 DEG FAHRENHEIT 2ND RESPONSE
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLEGASKET SEAL(BOSS) ALL ENDS
THREAD SERIES DESIGNATORUNF ALL ENDS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS
THREAD CLASS3B ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING5730.0 POUNDS PER SQUARE INCH
ADJUSTABLE PRESSURE RANGE3890.0 TO 7560.0 POUNDS PER SQUARE INCH


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