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National Stock Number:
4820-00-202-9866
Federal Supply Class:
4820
National Item Identification Number:
002029866
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.
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Manufacturer Information:
| SC260WS1-2 | 63686 | THE WALWORTH COMPANY |
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Techincal Specification:
| MATERIAL | COPPER ALLOY 922 BODY | | NICKEL ALLOY FLOW CONTROL DEVICE | | NICKEL ALLOY SEAT | | NICKEL ALLOY STEM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE BODY | | STYLE DESIGNATOR | STRAIGHT THRU | | FLOW CONTROL DEVICE | DISK | | MEDIA FOR WHICH DESIGNED | WATER, FRESH SINGLE RESPONSE | | MAXIMUM OPERATING PRESSURE | 300.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | VALVE OPERATION METHOD | MANUAL | | CONNECTION TYPE | UNTHREADED INTERNAL PIPE ALL ENDS | | CONNECTION STYLE | SOCKET WITH BRAZING RING (PIPE) ALL ENDS | | NOMINAL PIPE SIZE ACCOMMODATED | 0.500 INCHES ALL ENDS | | MOUNTING POSITION | HORIZONTAL OR | | VERTICAL | | RENEWABLE SEAT RING TYPE | THREADED | | BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | UNION | | FEATURES PROVIDED | BONNET PACKING | | SPECIAL FEATURES | SILVER BRAZING RINGS NOT FURNISHED W/VALVE |
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