4820-01-083-7254 VALVE,CROSS Index 5915-01-083-7256 FILTER,RADIO FREQUENCY INTERFERE

National Stock Number:
4820-01-083-7255

Federal Supply Class:
4820

National Item Identification Number:
010837255

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:
W04-2085B-13MS57574VELAN VALVE CORP.
W04-2085B-13MS AND 33311-3657574VELAN VALVE CORP.


Techincal Specification:
MATERIALSTEEL CORROSION RESISTING BODY
STEEL COMP 316 FLOW CONTROL DEVICE
STEEL COMP 316 SEAT
STEEL CORROSION RESISTING STEM
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A351,GRADE CF8M ASSN STD 1ST MATERIAL RESPONSE OR
ASTM A182,GRADE F316 ASSN STD 2ND MATERIAL RESPONSE BODY
66 FED STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
66 FED STD SINGLE MATERIAL RESPONSE SEAT
STYLE DESIGNATORANGLE
FLOW CONTROL DEVICEDISK
MAXIMUM OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MAXIMUM OPERATING TEMP850.0 DEG FAHRENHEIT SINGLE RESPONSE
VALVE OPERATION METHODMANUAL
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLESOCKET (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.750 INCHES ALL ENDS
MOUNTING POSITIONVERTICAL
BONNET TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED


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