4820-00-640-5868, VALVE,STOP-CHECK

National Stock Number:
4820-00-640-5868

Federal Supply Class:
4820

National Item Identification Number:
006405868

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:

4DP2033APCSC161-2 1-2	63686	THE WALWORTH COMPANY
FIG 3161 WS 2-1/2IN	63686	THE WALWORTH COMPANY
T-375B M0DIFIED	12168	NIBCO INC
T-375B MODIFIED	12168	NIBCO INC
SC161WS2 1-2	63686	THE WALWORTH COMPANY

Techincal Specification:

BONNET ATTACHMENT METHOD	UNION
BONNET TYPE	INSIDE SCREW
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLE	SOCKET WITH BRAZING RING (PIPE) ALL ENDS
FEATURES PROVIDED	BONNET PACKING
FLOW CONTROL DEVICE	DISK
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-390, ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL	COPPER ALLOY 922 BODY
MATERIAL	COPPER ALLOY 922 SEAT
MATERIAL	COPPER ALLOY FLOW CONTROL DEVICE
MATERIAL	COPPER ALLOY STEM
MAXIMUM OPERATING TEMP	500.0 FAHRENHEIT SINGLE RESPONSE
MAXIMUM OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM 1ST RESPONSE
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS 2ND RESPONSE
MOUNTING POSITION	HORIZONTAL OR VERTICAL
NOMINAL PIPE SIZE ACCOMMODATED	2.500 INCHES ALL ENDS
STYLE DESIGNATOR	ANGLE
VALVE OPERATION METHOD	MANUAL

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