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National Stock Number:
4820-01-218-6616
Federal Supply Class:
4820
National Item Identification Number:
012186616
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:
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Techincal Specification:
| BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | THREADED | | CONNECTION TYPE | THREADED EXTERNAL TUBE FIRST END | | CONNECTION TYPE | THREADED INTERNAL PIPE SECOND END | | CONNECTION STYLE | FLARED (TUBE) FIRST END | | CONNECTION STYLE | PLAIN, OPTIONAL END (PIPE) SECOND END | | MATERIAL | COPPER ALLOY BODY | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL THREAD SIZE | 0.250 INCHES SECOND END | | NOMINAL THREAD SIZE | 0.500 INCHES FIRST END | | SEAT ANGLE | 37.0 DEGREES FIRST END | | STYLE DESIGNATOR | STRAIGHT THRU | | SUPPLEMENTARY FEATURES | FLOW CONTROL DEVICE: STEM | | THREAD CLASS | 2A FIRST END | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD QUANTITY PER INCH | 20 FIRST END | | THREAD SERIES DESIGNATOR | NPTF SECOND END | | THREAD SERIES DESIGNATOR | UNF FIRST END | | VALVE OPERATION METHOD | MANUAL |
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