4820-01-138-6720 VALVE,CHECK Index 4820-01-138-6722 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-138-6721

Federal Supply Class:
4820

National Item Identification Number:
011386721

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:
675VP04-181755LOCKHEED MARTIN CORPORATION
859A12BT91816CIRCOR AEROSPACE, INC.


Techincal Specification:
MATERIALALUMINUM ALLOY 2024 BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-200/3, ALLOY 2024, TA FED SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATORSTRAIGHT THRU
FLOW CONTROL DEVICEPOPPET
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
ALCOHOL, ETHYL 2ND RESPONSE
CARBON DIOXIDE 3RD RESPONSE
ETHYLENE GLYCOL 4TH RESPONSE
FUEL/OIL, HYDROCARBON 5TH RESPONSE
MAXIMUM OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP280.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODAUTOMATIC
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 DESIGNATORUN 1ST END
UN 2ND END
NOMINAL THREAD SIZE1.062 INCHES 1ST END
1.062 INCHES 2ND END
THREAD QUANTITY PER INCH12 1ST END
12 2ND END
THREAD CLASS3A 1ST END
3B 2ND END
THREAD DIRECTIONRIGHT-HAND 1ST END
RIGHT-HAND 2ND END
MOUNTING POSITIONHORIZONTAL OR
VERTICAL
MINIMUM OPERATING TEMP-40.0 DEG FAHRENHEIT


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