4820-01-278-8637 VALVE,CHECK Index 4820-01-278-8639 VALVE,CHECK

National Stock Number:
4820-01-278-8638

Federal Supply Class:
4820

National Item Identification Number:
012788638

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:
4820PL19437209009HINSPEKTORAT WSPARCIA SIL ZBROJNYCH
70651-0330178286SIKORSKY AIRCRAFT CORPORATION
70651-03301-04278286SIKORSKY AIRCRAFT CORPORATION
70651-03301-04378286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEFLARELESS 2ND END
CONNECTION STYLEPLAIN (TUBE) 1ST END
DISK LOADING METHODSPRING
FLOW CONTROL DEVICEPOPPET
MATERIALALUMINUM ALLOY BODY
MAXIMUM OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID, MINERAL BASE SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL THREAD SIZE0.438 INCHES 2ND END
NOMINAL THREAD SIZE0.750 INCHES 1ST END
SEAT ANGLE24.0 DEGREES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
THREAD DIRECTIONRIGHT-HAND ALL ENDS
THREAD CLASS3A ALL ENDS
THREAD SERIES DESIGNATORUNJ ALL ENDS
THREAD QUANTITY PER INCH16 1ST END
THREAD QUANTITY PER INCH20 2ND END
VALVE OPERATION METHODAUTOMATIC


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