4820-01-518-4250, VALVE,STOP-CHECK

National Stock Number:
4820-01-518-4250

Federal Supply Class:
4820

National Item Identification Number:
015184250

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:

4384536-32A MOD	80064	NAVAL SHIP SYSTEMS COMMAND
803-4384536	80064	NAVAL SHIP SYSTEMS COMMAND
MB1624281	38881	MONTREAL BRONZE LIMITED

Techincal Specification:

BONNET TYPE	INSIDE SCREW
BONNET ATTACHMENT METHOD	UNION
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	SOCKET WITH BRAZING RING (PIPE) ALL ENDS
DEPARTURE FROM CITED DOCUMENT	AS MODIFIED BY BONNET O-RING MATERIAL: FLUOROCARBON IAW MIL-R-83248
FURNISHED ITEMS AND QUANTITY	1 HANDLE AND 2 NUT-SLEEVE AND 2 NUT
FLOW CONTROL DEVICE	DISK
MATERIAL	COPPER ALLOY 922 BODY
MATERIAL	NICKEL ALLOY FLOW CONTROL DEVICE
MATERIAL	NICKEL ALLOY SEAT
MATERIAL	NICKEL ALLOY STEM
PROPRIETARY CHARACTERISTICS	PACS
MAXIMUM OPERATING TEMP	250.0 DEG FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM SINGLE RESPONSE
NOMINAL PIPE SIZE ACCOMMODATED	0.500 INCHES ALL ENDS
RENEWABLE SEAT RING TYPE	THREADED
SPECIAL FEATURES	VALVE QUALIFIED FOR SHOCK IAW MIL-S-901C FOR LIGHTWEIGHT EQIPMENT, GRADE A CLASS I TYPE A; VIBRATION IAW MIL-STD-167
SPECIFICATION/STANDARD DATA	80064-803-4384536 GOVERNMENT STANDARD
VALVE OPERATION METHOD	AUTOMATIC OR MANUAL
STYLE DESIGNATOR	STRAIGHT THRU

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