4820-00-412-4290 VALVE,CHECK Index 2590-00-412-4300 JACK,LEVELING SUPPORT,VEHICLE

National Stock Number:
4820-00-412-4291

Federal Supply Class:
4820

National Item Identification Number:
004124291

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:
D520A4D12591816CIRCOR AEROSPACE, INC.
GV500KF4D125D26512NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
ADJUSTABLE PRESSURE RANGE+60.0 TO 150.0 POUNDS PER SQUARE INCH
BONNET ATTACHMENT METHODINTEGRAL
BONNET TYPEINSIDE SPRING
CONNECTION STYLEFLARED (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
DISK LOADING METHODSPRING
FURNISHED ITEMS AND QUANTITY1 DEFLECTOR CAP
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE
FLOW CONTROL DEVICEPOPPET
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIALALUMINUM ALLOY BODY
MATERIALALUMINUM ALLOY BODY LINING
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE SEAT
MAXIMUM OPERATING TEMP400.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
MINIMUM OPERATING TEMP-100.0 FAHRENHEIT
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END
NOMINAL THREAD SIZE0.437 INCHES FIRST END
OPENING PRESSURE SETTING125.0 POUNDS PER SQUARE INCH
SEAT ANGLE37.0 DEGREES ALL ENDS
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU W/BAFFLE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-86251 MIL SPEC SINGLE TREATMENT RESPONSE LOCATION NOT OTHERWISE SPECIFIED
SURFACE TREATMENTANODIZE LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS3A FIRST END
THREAD DIRECTIONRIGHT-HAND FIRST END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
THREAD QUANTITY PER INCH20 FIRST END


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