5340-01-497-6997 BRACKET,ANGLE Index 5310-01-497-6999 WASHER,FLAT

National Stock Number:
4820-01-497-6998

Federal Supply Class:
4820

National Item Identification Number:
014976998

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:
438453653711NAVAL SEA SYSTEMS COMMAND
4384536-54A253711NAVAL SEA SYSTEMS COMMAND
4384536-54A2AF53711NAVAL SEA SYSTEMS COMMAND
803-4384536-54A2AF53711NAVAL SEA SYSTEMS COMMAND
4384536-54AXAF80064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
MATERIALCOPPER ALLOY 922 BODY
NICKEL ALLOY FLOW CONTROL DEVICE
PLASTIC POLYTETRAFLUOROETHYLENE PACKING
NICKEL ALLOY SEAT
NICKEL ALLOY STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
ASTM B494, GRADE M30C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MIL-P-24503, TYPE II, CLASS 2, GRADE N MIL SPEC SINGLE MATERIAL RESPONSE PACKING
ASTMB164 ASSN STD SINGLE MATERIAL RESPONSE OR
ASTM B494, GRADE M30C ASSN STD SINGLE MATERIAL RESPONSE SEAT
ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OR
QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
STYLE DESIGNATORANGLE
FLOW CONTROL DEVICEDISK
MEDIA FOR WHICH DESIGNEDAIR 1ST RESPONSE
STEAM 2ND RESPONSE
WATER, FRESH 3RD RESPONSE
MAXIMUM OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP150.0 DEG FAHRENHEIT 1ST RESPONSE
150.0 DEG FAHRENHEIT 2ND RESPONSE
150.0 DEG FAHRENHEIT 3RD RESPONSE
VALVE OPERATION METHODAUTOMATIC OR
MANUAL
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLESOCKET WITH BRAZING RING (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED1.000 INCHES ALL ENDS
MOUNTING POSITIONHORIZONTAL OR
VERTICAL
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODUNION
FEATURES PROVIDEDBONNET PACKING AND
VALVE STEM LOCK SHIELD
SPECIAL FEATURESTHIS VALVE IS ASBESTOS FREE, SUPPLIED WITHOUT UNION NUTS, TAILPIECES IAW 803-7063850 UNLESS SPECIFIED. MEETS TYPE I VIBRATION REQUIREMENTS OF MIL-STD-167 BY NAVSEA LTR. SER. 08M/90-08796 DATED 10/3/90; MEETS SHOCK REQUIREMENTS OF MIL-S-901D, INTERIM CHANGE 1 FOR LIGHTWEIGHT EQUIPMENT, GRADE 1, CLASS I,TYPE A, HULL/FRAME MOUNTED BY NAVSEA LET. SER. 08M/97-08748 DATED 8/28/97


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