4820-00-287-4334, VALVE,LIFT-CHECK

National Stock Number:
4820-00-287-4334

Federal Supply Class:
4820

National Item Identification Number:
002874334

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.

Manufacturer Information:

1B958-2IN	14448	HAMMOND VALVE CORP
516-2IN	37239	LUNKENHEIMER CO
MSS SP-80	59646	MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS INDUSTRY INC
WWV51	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
B332-2IN	82666	STOCKHAM VALVES AND FITTINGS INC

Techincal Specification:

BONNET TYPE	INSIDE SPRING
BONNET ATTACHMENT METHOD	THREADED
CONNECTION STYLE	PLAIN, OPTIONAL END (PIPE) ALL ENDS
CONNECTION TYPE	THREADED INTERNAL PIPE ALL ENDS
FLOW CONTROL DEVICE	DISK
OPERATING PRESSURE	200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE
OPERATING PRESSURE	400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM B-61 ASSN STD SINGLE MATERIAL RESPONSE BODY
MATERIAL	COPPER ALLOY 836 BODY
MATERIAL	PLASTIC POLYTETRAFLUOROETHYLENE FLOW CONTROL DEVICE
MAXIMUM OPERATING TEMP	150.0 FAHRENHEIT SECOND RESPONSE
MAXIMUM OPERATING TEMP	450.0 FAHRENHEIT FIRST RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM FIRST RESPONSE
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS SECOND RESPONSE
MOUNTING POSITION	HORIZONTAL
NOMINAL THREAD SIZE	2.000 INCHES ALL ENDS
VALVE OPERATION METHOD	MANUAL
STYLE DESIGNATOR	STRAIGHT THRU
SUPPLEMENTARY FEATURES	ADDITIONAL MATERIAL: GLASS FIBER
THREAD DIRECTION	RIGHT-HAND ALL ENDS
THREAD SERIES DESIGNATOR	NPT ALL ENDS

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