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National Stock Number:
4820-00-457-0256
Federal Supply Class:
4820
National Item Identification Number:
004570256
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:
| S6165-20510-001 | 78286 | SIKORSKY AIRCRAFT CORPORATION | | S6165-20510-1 | 05722 | S & L AEROSPACE METALS LLC | | S6165-20510-1 | 33068 | TRIUMPH ACTUATION SYSTEMS - CONNECTICUT, LLC | | S6165-20510-1 | 54878 | ROTAIR AEROSPACE CORP | | S6165-20510-1 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY BODY | | ALUMINUM ALLOY AND | | ALUMINUM FLOW CONTROL DEVICE | | STYLE DESIGNATOR | ANGLE | | FLOW CONTROL DEVICE | DISK | | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, PETROLEUM BASE 1ST RESPONSE | | OIL, HYDRAULIC 2ND RESPONSE | | MAXIMUM OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | VALVE OPERATION METHOD | MANUAL | | CONNECTION TYPE | THREADED EXTERNAL TUBE 1ST END | | THREADED INTERNAL TUBE 2ND END | | CONNECTION STYLE | FLARED (TUBE) 1ST END | | FLARE (TUBE) 2ND END | | SEAT ANGLE | 37.0 DEGREES 1ST END | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES 2ND END | | THREAD SERIES DESIGNATOR | UNF ALL ENDS | | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS | | THREAD CLASS | 2A 1ST END | | 2B 2ND END | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | MOUNTING POSITION | HORIZONTAL OR | | VERTICAL | | BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | THREADED | | MOUNTING FACILITY | BRACKET | | TEST DATA DOCUMENT | 81349-MIL-V-5528 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
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