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National Stock Number:
4820-00-474-1749
Federal Supply Class:
4820
National Item Identification Number:
004741749
Description:
VALVE,LIFT-CHECK
Detail:
A VALVE WITH A STEM THAT MAY BE MECHANICALLY ACTUATED TO TWO DIFFERENT POSITIONS BY ROTARY OR LINEAR MOTION. IN THE FIRST 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 SECOND 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, STOP-CHECK AND VALVE, STOP-LIFT-CHECK.
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Manufacturer Information:
| 16892-2 | 81982 | HYDRO-AIRE AEROSPACE CORP |
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Techincal Specification:
| MATERIAL | ALUMINUM BODY | | STEEL FLOW CONTROL DEVICE | | ALUMINUM SEAT | | STEEL STEM | | SURFACE TREATMENT | ANODIZE | | STYLE DESIGNATOR | STRAIGHT THRU | | FLOW CONTROL DEVICE | DISK | | MAXIMUM OPERATING PRESSURE | 1500.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | MAXIMUM OPERATING TEMP | 160.0 DEG FAHRENHEIT SINGLE RESPONSE | | VALVE OPERATION METHOD | MANUAL | | CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS | | CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 0.500 INCHES 1ST END | | THREAD SERIES DESIGNATOR | UNF ALL ENDS | | NOMINAL THREAD SIZE | 0.750 INCHES ALL ENDS | | THREAD CLASS | 3B ALL ENDS | | THREAD DIRECTION | RIGHT-HAND ALL ENDS | | MOUNTING POSITION | HORIZONTAL OR | | VERTICAL | | BONNET TYPE | INSIDE SCREW | | BONNET ATTACHMENT METHOD | INTEGRAL | | DISK LOADING METHOD | SPRING | | MOUNTING FACILITY | THREADED FASTENER | | FEATURES PROVIDED | VALVE STEM LOCK SHIELD | | SPECIAL FEATURES | HANDLE TURNS CW 90 DEG FOR OPEN POSITION | | SUPPLEMENTARY FEATURES | OPTIONAL FLOW CONTROL DEVICE: STEM | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 81982 | | DESIGN CONTROL REFERENCE | 16892-2 |
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