4820-00-287-4431 VALVE,CHECK Index 4820-00-287-4439 VALVE,CHECK

National Stock Number:
4820-00-287-4433

Federal Supply Class:
4820

National Item Identification Number:
002874433

Description:
VALVE,CHECK

Detail:
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.


Manufacturer Information:
1016435018876U S ARMY AVIATION AND MISSILE COMMAND
259A-2PP-2.591816CIRCOR AEROSPACE, INC.
317337-13B150RAYTHEON COMPANY
259A2PP91815JACOBUS A G SONS INC
259A2PP91816CIRCOR AEROSPACE, INC.
269A2PP2-591816CIRCOR AEROSPACE, INC.
556-881811530LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS
317337-149956RAYTHEON COMPANY
317337-154X10RAYTHEON COMPANY


Techincal Specification:
MATERIALALUMINUM ALLOY OVERALL
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
ACETYLENE 2ND RESPONSE
ALCOHOL, ETHYL 3RD RESPONSE
AMMONIA, GASEOUS 4TH RESPONSE
CARBON DIOXIDE 5TH RESPONSE
MAXIMUM OPERATING PRESSURE75.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP-40.0 DEG FAHRENHEIT 1ST RESPONSE
250.0 DEG FAHRENHEIT 2ND RESPONSE
VALVE OPERATION METHODAUTOMATIC
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS
THREAD DIRECTIONRIGHT-HAND ALL ENDS
MOUNTING POSITIONHORIZONTAL OR
VERTICAL
DISK LOADING METHODSPRING
OPENING PRESSURE SETTING2.5 POUNDS PER SQUARE INCH


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