4820-01-497-6998, VALVE,STOP-CHECK

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:

4384536	53711	NAVAL SEA SYSTEMS COMMAND
4384536-54A2	53711	NAVAL SEA SYSTEMS COMMAND
4384536-54A2AF	53711	NAVAL SEA SYSTEMS COMMAND
803-4384536-54A2AF	53711	NAVAL SEA SYSTEMS COMMAND
4384536-54AXAF	80064	NAVAL SHIP SYSTEMS COMMAND

Techincal Specification:

BONNET ATTACHMENT METHOD	UNION
BONNET TYPE	INSIDE SCREW
CONNECTION STYLE	SOCKET WITH BRAZING RING (PIPE) ALL ENDS
CONNECTION TYPE	UNTHREADED INTERNAL PIPE ALL ENDS
FEATURES PROVIDED	BONNET PACKING AND VALVE STEM LOCK SHIELD
FLOW CONTROL DEVICE	DISK
OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	ASTMB164 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B494, GRADE -30C ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTMB164 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B494, GRADE -30C ASSN STD SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-P-24503, TYPE II, CLASS 2, GRADE N MIL SPEC SINGLE MATERIAL RESPONSE PACKING
MATERIAL	COPPER ALLOY 922 BODY
MATERIAL	NICKEL ALLOY FLOW CONTROL DEVICE
MATERIAL	NICKEL ALLOY SEAT
MATERIAL	NICKEL ALLOY STEM
MATERIAL	PLASTIC POLYTETRAFLUOROETHYLENE PACKING
MAXIMUM OPERATING TEMP	150.0 FAHRENHEIT SECOND RESPONSE
MAXIMUM OPERATING TEMP	150.0 FAHRENHEIT THIRD RESPONSE
MAXIMUM OPERATING TEMP	150.0 FAHRENHEIT FIRST RESPONSE
MEDIA FOR WHICH DESIGNED	AIR FIRST RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM SECOND RESPONSE
MEDIA FOR WHICH DESIGNED	WATER, FRESH THIRD RESPONSE
MOUNTING POSITION	HORIZONTAL OR VERTICAL
NOMINAL PIPE SIZE ACCOMMODATED	1.000 INCHES ALL ENDS
SPECIAL FEATURES	THIS 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
VALVE OPERATION METHOD	AUTOMATIC OR MANUAL
STYLE DESIGNATOR	ANGLE

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