4820-00-405-9718, VALVE,STOP-CHECK

4720-00-405-9721 HOSE ASSEMBLY,NONMETALLIC

National Stock Number:
4820-00-405-9718

Federal Supply Class:
4820

National Item Identification Number:
004059718

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:

S4824-1385541	53711	NAVAL SEA SYSTEMS COMMAND
S4824-1385541	80064	NAVAL SHIP SYSTEMS COMMAND

Techincal Specification:

BOLT HOLE NOMINAL DIAMETER	0.812 INCHES ALL ENDS
BOLT HOLE QUANTITY	18 ALL ENDS
BOLT CIRCLE NOMINAL DIAMETER	16.062 INCHES ALL ENDS
BONNET ATTACHMENT METHOD	BOLTED
BONNET TYPE	OUTSIDE SCREW-YOKE
CONNECTION TYPE	FLANGE ALL ENDS
FEATURES PROVIDED	VALVE STEM LOCK SHIELD
FIRST CONNECTION FACE TO CENTERLINE DISTANCE	13.375 INCHES
FLANGE FACE DESIGN	PLAIN ALL ENDS
FLANGE SHAPE	ROUND WITH HOLES ALL ENDS
FLOW CONTROL DEVICE	DISK
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-N-894,CLASS B- CANCELED MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-288,COMP B FED SPEC SINGLE MATERIAL RESPONSE SEAT
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-N-288,COMP B FED SPEC SINGLE MATERIAL RESPONSE STEM
MATERIAL	COPPER ALLOY 922 BODY
MATERIAL	NICKEL ALLOY FLOW CONTROL DEVICE
MATERIAL	NICKEL ALLOY SEAT
MATERIAL	NICKEL ALLOY STEM
MAXIMUM OPERATING PRESSURE	100.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP	425.0 FAHRENHEIT SINGLE RESPONSE
MEDIA FOR WHICH DESIGNED	STEAM 1ST RESPONSE
MEDIA FOR WHICH DESIGNED	WATER-OIL-GAS 2ND RESPONSE
MOUNTING POSITION	HORIZONTAL
NOMINAL OUTSIDE DIAMETER	17.625 INCHES ALL ENDS
NOMINAL THICKNESS	0.750 INCHES ALL ENDS
RENEWABLE SEAT RING TYPE	THREADED
SECOND CONNECTION FACE TO CENTERLINE DISTANCE	13.375 INCHES
STYLE DESIGNATOR	ANGLE FLANGED ENDS
TEST DATA DOCUMENT	03950-CID882035023 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VALVE OPERATION METHOD	MANUAL
VALVE SIZE	12.000 INCHES

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