4820-00-083-1259 PARTS KIT,SAFETY RELIEF VALVE Index 4820-00-083-1263 VALVE,SAFETY RELIEF

National Stock Number:
4820-00-083-1262

Federal Supply Class:
4820

National Item Identification Number:
000831262

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:
128SCH142-126512NORTHROP GRUMMAN SYSTEMS CORPORATION
128SCH142-179RG9NORTHROP GRUMMAN SYSTEMS CORPORATION
A9015481982HYDRO-AIRE AEROSPACE CORP


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU
VALVE OPERATION METHODAUTOMATIC
MATERIALALUMINUM ALLOY BODY
STEEL CORROSION RESISTING FLOW CONTROL DEVICE
ALUMINUM ALLOY SEAT
STEEL CORROSION RESISTING STEM
SURFACE TREATMENTANODIZE
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, PHOSPHATE-ESTER BASE SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-65.0 DEG FAHRENHEIT 1ST RESPONSE
275.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE DISCHARGE FLOW RATE1.2 GALLONS PER MINUTE
CONNECTION TYPETHREADED INTERNAL BOSS ALL ENDS
CONNECTION STYLEGASKET SEAL(BOSS) ALL ENDS
THREAD SERIES DESIGNATORUNJF ALL ENDS
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS
THREAD QUANTITY PER INCH20 ALL ENDS
THREAD CLASS3B ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING2800.0 POUNDS PER SQUARE INCH
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
SPECIAL FEATURESFREE REVERSE FLOW


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