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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:
| BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | THREADED | | CONNECTION STYLE | FLARE (TUBE) SECOND END | | CONNECTION STYLE | FLARED (TUBE) FIRST END | | CONNECTION TYPE | THREADED EXTERNAL TUBE FIRST END | | CONNECTION TYPE | THREADED INTERNAL TUBE SECOND END | | FLOW CONTROL DEVICE | DISK | | OPERATING PRESSURE | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | MATERIAL | ALUMINUM ALLOY AND ALUMINUM FLOW CONTROL DEVICE | | MATERIAL | ALUMINUM ALLOY BODY | | MEDIA FOR WHICH DESIGNED | HYDRAULIC FLUID, PETROLEUM BASE FIRST RESPONSE | | MEDIA FOR WHICH DESIGNED | OIL, HYDRAULIC SECOND RESPONSE | | MOUNTING FACILITY | BRACKET(S) | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.250 INCHES SECOND END | | NOMINAL THREAD SIZE | 0.438 INCHES ALL ENDS | | SEAT ANGLE | 37.0 DEGREES FIRST END | | VALVE OPERATION METHOD | MANUAL | | STYLE DESIGNATOR | ANGLE | | 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.). | | THREAD CLASS | 2A FIRST END | | THREAD CLASS | 2B SECOND END | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | THREAD SERIES DESIGNATOR | UNF ALL ENDS |
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