3020-01-191-6089 GEAR,SPUR Index 4820-01-191-6091 VALVE,SAFETY RELIEF

National Stock Number:
4820-01-191-6090

Federal Supply Class:
4820

National Item Identification Number:
011916090

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:
F-637-31 4IN12168NIBCO INC


Techincal Specification:
MATERIALIRON BODY
COPPER ALLOY SEAT
COPPER ALLOY STEM
COPPER ALLOY DISK
VALVE SIZE4.000 INCHES
MAXIMUM OPERATING PRESSURE AND MEDIA FOR WHICH DESIGNED250.0 POUNDS PER SQUARE INCH WATER, FRESH
MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED550.0 DEG FAHRENHEIT WATER, FRESH
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 TYPEOUTSIDE SCREW-YOKE
BONNET ATTACHMENT METHODBOLTED


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