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National Stock Number:
4820-00-781-7820
Federal Supply Class:
4820
National Item Identification Number:
007817820
Description:
VALVE,STOP-LIFT-CHECK
Detail:
A VALVE WITH A STEM THAT MAY BE MECHANICALLY ACTUATED TO THREE 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. IN THE THIRD POSITION, THE VALVE DISK IS LIFTED FROM THE SEAT TO ALLOW A FLOW OF FLUID IN EITHER DIRECTION THROUGH THE VALVE. THE VALVE DISK MAY BE SPRING LOADED. SEE ALSO VALVE, LIFT-CHECK AND VALVE, STOP-CHECK.
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Manufacturer Information:
| 29973 | 14959 | CRANE CO DIV VALVE DIV | | 3657U | 14959 | CRANE CO DIV VALVE DIV | | MILV22094 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
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Techincal Specification:
| BONNET ATTACHMENT METHOD | BOLTED | | BONNET TYPE | OUTSIDE SCREW-YOKE | | FEATURES PROVIDED | BONNET PACKING | | FIRST CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES | | FLOW CONTROL DEVICE | DISK | | MOUNTING POSITION | VERTICAL | | RENEWABLE SEAT RING TYPE | THREADED | | SECOND CONNECTION FACE TO CENTERLINE DISTANCE | 4.250 INCHES | | STYLE DESIGNATOR | ANGLE FLANGED ENDS | | VALVE OPERATION METHOD | MANUAL | | VALVE SIZE | 1.000 INCHES |
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