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Part Number

Part Number:
NSN:
NIIN:
Item Name:
VALVE , STOP-CHECK

Definition:

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.

CAGE Information

Code Company
03950 NAVAL INVENTORY CONTROL POINT MECHAN

Federal Supply Class

Title

VALVES, NONPOWERED

Inclusions:

INCLUDES AUTOMATIC NONPOWERED VALVES; GATE, GLOBE, ANGLE, CHECK, AND RELIEF VALVES; COCKS.

Exclusions:

EXCLUDES FIRE HYDRANTS (FSC 4210); SPRINKLER HEADS (FSC 4210); VALVES SPECIFICALLY DESIGNED FOR USE WITH FIRE FIGHTING EQUIPMENT (FSC 4210); PLUMBING EQUIPMENT, AND THE LIKE (FSC 4540).

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
MATT MATERIAL STEEL COMP 440C STEM
ADSR BONNET TYPE OUTSIDE SCREW-YOKE
AEHZ MAXIMUM OPERATING TEMP 150.0 DEG FAHRENHEIT SINGLE RESPONSE
THSD THREAD SERIES DESIGNATOR UNF ALL ENDS
ADST BONNET ATTACHMENT METHOD BOLTED
STYL STYLE DESIGNATOR STRAIGHT THRU
BBJX MOUNTING POSITION HORIZONTAL OR VERTICAL
AWLS CONNECTION TYPE THREADED INTERNAL BOSS ALL ENDS
ZZZY REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS CLEANING SHALL BE IN ACCORDANCE WITH MIL-C-52211 (FOR OXYGEN SERVICE)
ADQU FLOW CONTROL DEVICE DISK
AAJD THREAD CLASS 2B ALL ENDS
CQJX NOMINAL THREAD SIZE 0.562 INCHES ALL ENDS
AQLR VALVE OPERATION METHOD MANUAL
AAJF THREAD DIRECTION RIGHT-HAND ALL ENDS
AHNC CONNECTION STYLE GASKET SEAL (BOSS) ALL ENDS
MATT MATERIAL STEEL COMP 316 BODY
CQGM MAXIMUM OPERATING PRESSURE 5000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE
MATT MATERIAL PLASTIC POLYTETRAFLUOROETHYLENE PACKING

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