4820-01-117-1927, VALVE,STOP-CHECK

4820-01-117-1926 VALVE,ANGLE

6210-01-117-1928 LIGHT,INDICATOR

National Stock Number:
4820-01-117-1927

Federal Supply Class:
4820

National Item Identification Number:
011171927

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:

2620-902ASSYE 1/4 IN	63686	THE WALWORTH COMPANY
2620-902ASSYE 1/4 IN	96169	ELECTRIC BOAT CORPORATION
524-1 1-4IN	76364	MILWAUKEE VALVE CO, INC
845-1889587	80064	NAVAL SHIP SYSTEMS COMMAND
845-1889587ASSYE 1/4IN	80064	NAVAL SHIP SYSTEMS COMMAND

Techincal Specification:

MATERIAL	COPPER ALLOY BODY
	NICKEL ALLOY FLOW CONTROL DEVICE
	NICKEL ALLOY SEAT
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
	QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE SEAT
SURFACE TREATMENT	COPPER ALLOY
STYLE DESIGNATOR	STRAIGHT THRU
FLOW CONTROL DEVICE	DISK
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	700.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	150.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHOD	AUTOMATIC OR
	MANUAL
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	REDUCED SOCKET WITH ONE BRAZING RING (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED	0.250 INCHES ALL ENDS
MOUNTING POSITION	HORIZONTAL
RENEWABLE SEAT RING TYPE	THREADED
BONNET TYPE	INSIDE SCREW
BONNET ATTACHMENT METHOD	UNION
FEATURES PROVIDED	BONNET PACKING

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