4820-01-444-1003 PISTON,VALVE Index 4820-01-444-1005 STEM,FLUID VALVE

National Stock Number:
4820-01-444-1004

Federal Supply Class:
4820

National Item Identification Number:
014441004

Description:
VALVE,GATE

Detail:
A valve having a flat or tapered disk (gate) which moves transversely to the axis of flow by rotating or sliding movements of the stem to open or close the orifice. It may also contain an oval or rectangular shaped slide which may be manually, motor, or pressure operated through the means of an arm or arm assembly. The body flange may be designed to accommodate tube type connectors. It may or may not contain thermal relief features. Includes valve (gate) specifically designed for the control of fluid systems in aircraft or missiles.


Manufacturer Information:
F639-31 4IN12168NIBCO INC
F639-31 4IN14007NIBCO INC
F639-31 4IN61623NIBCO INC CHEMTROL DIV
P/N F639-31 4IN76816NIBCO INC.


Techincal Specification:
MATERIALIRON BODY
COPPER ALLOY 922 SEAT
COPPER ALLOY 694 STEM
COPPER ALLOY DISK
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A-395 ASSN STD SINGLE MATERIAL RESPONSE BODY
ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE SEAT
ASTM B-311 ASSN STD SINGLE MATERIAL RESPONSE STEM
ASTM B61 ASSN STD SINGLE MATERIAL RESPONSE DISK
VALVE SIZE4.000 INCHES
PRESSURE CLASS150.0 POUNDS PER SQUARE INCH
MAXIMUM OPERATING PRESSURE AND MEDIA FOR WHICH DESIGNED250.0 POUNDS PER SQUARE INCH WATER-OIL-GAS
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED550.0 DEG FAHRENHEIT WATER-OIL-GAS
VALVE OPERATION METHODMANUAL
INLET RELATIONSHIP WITH OUTLETIDENTICAL
CONNECTION TYPEFLANGE, ROUND W/HOLES
FLANGE DIAMETER9.000 INCHES
BOLT HOLE QUANTITY8
FACE TO FACE DISTANCE9.000 INCHES
FLANGE FACE DESIGNRAISED
STEM TYPENONRISING
BONNET TYPEINSIDE SCREW
BONNET ATTACHMENT METHODBOLTED
FURNISHED ITEMS AND QUANTITY1 HANDWHEEL


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