4820-01-134-8794 VALVE,GLOBE Index 4820-01-134-8796 VALVE,CHECK

National Stock Number:
4820-01-134-8795

Federal Supply Class:
4820

National Item Identification Number:
011348795

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.


Manufacturer Information:
803-217793480064NAVAL SHIP SYSTEMS COMMAND
803-2177934-B3353711NAVAL SEA SYSTEMS COMMAND
SC251PWS 1-2IN63686THE WALWORTH COMPANY
803-2177934-B33680064NAVAL SHIP SYSTEMS COMMAND
803-2177934-B336AF80064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BONNET ATTACHMENT METHODTHREADED
BONNET TYPEINSIDE SCREW
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
CONNECTION STYLESTREAMLINED WITH ONE BRAZING RING (TUBE) ALL ENDS
FURNISHED ITEMS AND QUANTITY1 HANDWHEEL
FEATURES PROVIDEDVALVE STEM LOCK SHIELD
FLOW CONTROL DEVICEDISK
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-15726, COMP 70-30 MIL SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CLASS B FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281, CLASS B FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIALNICKEL ALLOY BODY
MATERIALNICKEL ALLOY FLOW CONTROL DEVICE
MATERIALNICKEL ALLOY STEM
MAXIMUM OPERATING PRESSURE700.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SINGLE RESPONSE
MOUNTING POSITIONHORIZONTAL OR VERTICAL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES ALL ENDS
STYLE DESIGNATORSTRAIGHT THRU
VALVE OPERATION METHODAUTOMATIC


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