4820-01-443-8647, VALVE,STOP-CHECK

National Stock Number:
4820-01-443-8647

Federal Supply Class:
4820

National Item Identification Number:
014438647

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:

4384536	80064	NAVAL SHIP SYSTEMS COMMAND
803-4384536-62B1	80064	NAVAL SHIP SYSTEMS COMMAND

Techincal Specification:

BONNET TYPE	INSIDE SCREW
BONNET ATTACHMENT METHOD	UNION
CONNECTION STYLE	GASKET SEAL (PIPE) ALL ENDS
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
FLOW CONTROL DEVICE	DISK
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A494, -30C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE STEM
MATERIAL	COPPER ALLOY 922 BODY
MATERIAL	NICKEL ALLOY FLOW CONTROL DEVICE
MATERIAL	NICKEL ALLOY STEM
MOUNTING POSITION	HORIZONTAL OR VERTICAL
NOMINAL PIPE SIZE ACCOMMODATED	1.250 INCHES ALL ENDS
SPECIAL FEATURES	INCLUDES NITRILE O-RINGS
VALVE OPERATION METHOD	MANUAL
STYLE DESIGNATOR	STRAIGHT THRU

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