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National Stock Number:
4820-01-423-2025
Federal Supply Class:
4820
National Item Identification Number:
014232025
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:
| 6983468 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 803-6983468-ASSY 96 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| BOLT CIRCLE NOMINAL DIAMETER | 4.440 INCHES ALL ENDS | | BOLT HOLE NOMINAL DIAMETER | 0.694 INCHES ALL ENDS | | BOLT HOLE QUANTITY | 6 ALL ENDS | | BONNET ATTACHMENT METHOD | BOLTED | | BONNET TYPE | INSIDE SPRING | | CONNECTION TYPE | FLANGE ALL ENDS | | FACE TO FACE DISTANCE | 11.500 INCHES | | FLANGE FACE DESIGN | PLAIN ALL ENDS | | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS | | MATERIAL | NICKEL ALLOY BODY | | MAXIMUM OPERATING TEMP | 250.0 FAHRENHEIT SINGLE RESPONSE | | MEDIA FOR WHICH DESIGNED | WATER, SALT SINGLE RESPONSE | | MINIMUM OPERATING TEMP | 250.0 FAHRENHEIT | | MOUNTING POSITION | HORIZONTAL | | NOMINAL OUTSIDE DIAMETER | 11.500 INCHES ALL ENDS | | NOMINAL THICKNESS | 0.810 INCHES ALL ENDS | | OPERATING PRESSURE | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE | | VALVE OPERATION METHOD | AUTOMATIC | | VALVE SIZE | 2.000 INCHES | | STYLE DESIGNATOR | STRAIGHT THRU FLANGED ENDS |
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