4820-00-540-1870 VALVE,CHECK Index 3020-00-540-1873 GEAR,WORM

National Stock Number:
4820-00-540-1872

Federal Supply Class:
4820

National Item Identification Number:
005401872

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:
2R145099240CRISSAIR INC
4446441-105PS188277THE BOEING COMPANY
4446441-50118355THE BOEING COMPANY
4446441-50188277THE BOEING COMPANY


Techincal Specification:
STYLE DESIGNATORSTRAIGHT THRU
VALVE OPERATION METHODAUTOMATIC
MATERIALALUMINUM BODY
STEEL CORROSION RESISTING FLOW CONTROL DEVICE
RUBBER SYNTHETIC SEAT
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDOIL, HYDRAULIC SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP200.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE DISCHARGE FLOW RATE1.0 GALLONS PER MINUTE
CONNECTION TYPETHREADED EXTERNAL TUBE 1ST END
THREADED INTERNAL BOSS 2ND END
CONNECTION STYLEFLARED (TUBE) 1ST END
GASKET SEAL(BOSS) 2ND END
SEAT ANGLE37.0 DEGREES 1ST END
THREAD SERIES DESIGNATORUNF 1ST END
UNJF 2ND END
NOMINAL THREAD SIZE0.437 INCHES 1ST END
0.548 INCHES 2ND END
THREAD CLASS3A 1ST END
3B 2ND END
THREAD DIRECTIONRIGHT-HAND 1ST END
RIGHT-HAND 2ND END
BONNET TYPEPACKING RETAINING
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING105.0 POUNDS PER SQUARE INCH
FEATURES PROVIDEDPRESSURE TIGHT OUTLET SIDE


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