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National Stock Number:
4820-01-527-2852
Federal Supply Class:
4820
National Item Identification Number:
015272852
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:
| 104P3.6 | 79067 | APCO/VALVE & PRIMER CORP | | 9543607-CRF | 41UJ8 | DEZURIK, INC. | | 9543607-CRF | 79067 | APCO/VALVE & PRIMER CORP | | S-100 MODIFIED | 79067 | APCO/VALVE & PRIMER CORP |
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Techincal Specification:
| BOLT HOLE NOMINAL DIAMETER | 0.562 INCHES ALL ENDS | | BOLT HOLE QUANTITY | 8 ALL ENDS | | BONNET ATTACHMENT METHOD | BOLTED | | BONNET TYPE | INSIDE SCREW | | BOLT CIRCLE NOMINAL DIAMETER | 6.562 INCHES ALL ENDS | | CONNECTION TYPE | FLANGE ALL ENDS | | DISK LOADING METHOD | WEIGHT | | FURNISHED ITEMS AND QUANTITY | 1 HANDLE | | FLANGE FACE DESIGN | PLAIN ALL ENDS | | FLANGE SHAPE | ROUND WITH HOLES ALL ENDS | | FLOW CONTROL DEVICE | DISK | | MATERIAL | COPPER ALLOY OVERALL | | MATERIAL | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR AND STEEL FLOW CONTROL DEVICE | | MAXIMUM OPERATING PRESSURE | 175.0 POUNDS PER SQUARE INCH SINGLE RESPONSE | | MAXIMUM OPERATING TEMP | 150.0 FAHRENHEIT SINGLE RESPONSE | | MOUNTING POSITION | HORIZONTAL OR VERTICAL | | NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED | 4.000 INCHES ALL ENDS | | NOMINAL OUTSIDE DIAMETER | 7.688 INCHES ALL ENDS | | NOMINAL THICKNESS | 0.938 INCHES ALL ENDS | | PART NAME ASSIGNED BY CONTROLLING AGENCY | RUBBER FLAPPER SWING CHECK VALVE WITH BACKFLOW DEVICE | | SEAT ANGLE | 45.0 DEGREES 1ST END | | SPECIAL FEATURES | MODIFIED FROM COMMERICAL VALVE BY MATERIAL OF BODY, COVER, COVER BOLTS OF BRONZE, GUIDE STOP SCREW OF SS, HANDLEBAR OF BRONZE (DET 1, 2, 4, 18, 23); FLANGES IAW MIL-F-20042 WHICH DIFFERS FROM THEIR COMMERCIAL VALVES BY DIMENSIONS OF THE O.D., BOLT CIRCLE DIAMETER AND BOLT HOLE;MEETS HIGH SHOCK REQUIREMENTS IAW MIL-S-901D FOR LIGHTWEIGHT, GRADE A, SHOCK-PROOF EQUIPMENT CLASS I, MOUNTING FIXTURE 4C, LOCATION: HULL, ORIENTATION UNRESTRICTED. | | VALVE OPERATION METHOD | AUTOMATIC OR MANUAL | | STYLE DESIGNATOR | STRAIGHT THRU |
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