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National Stock Number:
4820-01-257-2260
Federal Supply Class:
4820
National Item Identification Number:
012572260
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:
| 44613-140-00-1 | K4556 | BRITISH AEROSPACE DEFENCE SYSTEMS LTD T/A BAE SYSTEMS | | 44613-140-00-1 | KC1M9 | BAE SYSTEMS MARITIME SERVICESLIMITED | | SS-4PDM4-F4 | 02570 | SWAGELOK CO | | SS-4PDM4-F4 | 12623 | WHITEY CO | | SS-4PDM4-F4 | 3T9T9 | SWAGELOK CO |
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Techincal Specification:
| BONNET TYPE | INSIDE SPRING | | BONNET ATTACHMENT METHOD | THREADED | | CONNECTION STYLE | PLAIN (PIPE) FIRST END | | CONNECTION STYLE | SWIVEL NUT, INVERTED FLARE (PIPE) SECOND END | | CONNECTION TYPE | THREADED EXTERNAL PIPE FIRST END | | CONNECTION TYPE | UNTHREADED INTERNAL PIPE SECOND END | | MATERIAL | STEEL AND STEEL COMP 630 OVERALL | | MAXIMUM OPERATING TEMP | 250.0 FAHRENHEIT SINGLE RESPONSE | | MOUNTING POSITION | HORIZONTAL | | NOMINAL PIPE SIZE ACCOMMODATED | 0.250 INCHES ALL ENDS | | NOMINAL THREAD SIZE | 0.250 INCHES FIRST END | | OPERATING PRESSURE | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | VALVE OPERATION METHOD | MANUAL | | STYLE DESIGNATOR | STRAIGHT THRU | | SUPPLEMENTARY FEATURES | FLOW CONTROL DEVICE: STEM | | THREAD DIRECTION | RIGHT-HAND FIRST END | | THREAD SERIES DESIGNATOR | NPT FIRST END |
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