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National Stock Number:
4820-00-932-9813
Federal Supply Class:
4820
National Item Identification Number:
009329813
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:
| 18790-1 | 99643 | EATON AEROSPACE LLC | | S6130-80413-2 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| STYLE DESIGNATOR | STRAIGHT THRU | | FLOW CONTROL DEVICE | POPPET | | VALVE OPERATION METHOD | AUTOMATIC | | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 1ST END | | NOMINAL THREAD SIZE | 0.437 INCHES 1ST END | | THREAD QUANTITY PER INCH | 20 1ST END | | THREAD CLASS | 3A 1ST END | | THREAD DIRECTION | RIGHT-HAND 1ST END | | MOUNTING POSITION | VERTICAL | | BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | THREADED | | DISK LOADING METHOD | SPRING | | SPECIAL FEATURES | BULKHEAD THD LOCATED ON FIRST END,7/16-20 UNF3A,0.312 IN. MIN,0.379 IN. MAX LG | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 99643 | | DESIGN CONTROL REFERENCE | 18790-1 |
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