4820-00-922-8423, VALVE,STOP-CHECK

National Stock Number:
4820-00-922-8423

Federal Supply Class:
4820

National Item Identification Number:
009228423

Description:
VALVE,STOP-CHECK

Detail:
A VALVE WITH A BOLT OR STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST POSITION, THE VALVE DISK IS LOCATED AND LOCKED AGAINST THE SEAT PERMITTING NO FLUID FLOW THROUGH THE VALVE. IN THE SECOND POSITION, ONE SIDE OF THE VALVE DISK IS LOCATED AGAINST THE SEAT PERMITTING MOVEMENT OF THE DISK IN A MANNER THAT WILL ALLOW A FLOW OF FLUID IN ONE DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. IT MAY BE INLINE OR CARTRIDGE (MANIFOLD) DESIGN. SEE ALSO VALVE (1), LIFT-CHECK AND VALVE (1), STOP-LIFT-CHECK.

Manufacturer Information:

SS845-1889587ASSYE1 1-2IN	80064	NAVAL SHIP SYSTEMS COMMAND
SS845-1889587ASSYE1 1-2INL1	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
SS845-1889587ASSYE1 1-2INL1	63686	THE WALWORTH COMPANY

Techincal Specification:

CRITICALITY CODE JUSTIFICATION	ZZZY
FEATURES PROVIDED	BONNET PACKING
FLOW CONTROL DEVICE	DISK
NOMINAL PIPE SIZE ACCOMMODATED	1.500 INCHES 1ST END
MAXIMUM OPERATING PRESSURE	700.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	150.0 DEG FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS SINGLE RESPONSE
MOUNTING POSITION	HORIZONTAL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
RENEWABLE SEAT RING TYPE	THREADED
VALVE OPERATION METHOD	MANUAL
STYLE DESIGNATOR	STRAIGHT THRU
BONNET ATTACHMENT METHOD	UNION
BONNET TYPE	INSIDE SCREW
CONNECTION STYLE	SOCKET WITH BRAZING RING (PIPE) 1ST END
CONNECTION TYPE	UNTHREADED INTERNAL PIPE 1ST END

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