ASTM F1793-97(2004)

ASTM F1793-97(2004) - 1.5.2004

1. Scope

1.1 This specification covers self-contained automatic shut-off valves (also known as Excess Flow Valves) for air or nitrogen service. They are intended to be installed as safety devices to quickly and automatically shut-off flow under certain excess flow conditions caused by a downstream failure or casualty such as a hose rupture.

1.2 The valves stated in this specification in inch-pounds units are to be regarded as the standard. The SI equivalent shown in parentheses are provided for information only.

2. Referenced Documents

ANSI B16.34	ValvesFlanged, Threaded, and Welded End
ANSI B1.20.1	Pipe Threads, General Purpose (Inch)
ANSI B1.1	Unified Screw Threads (UN and UNR Thread Form)
ANSI B16.25	Buttwelding Ends
MIL-F-1183	Fitting, Pipe, Cast Bronze, Silver-Brazing, General Specification for
MIL-S-901	Shock Tests, H.I. (High-Impact); Shipboard Machinery Equipment and Systems, Requirements for
MIL-STD-740-1
MIL-STD-167-1	Mechanical Vibrations of Shipboard Equipment (Type IEnvironmental and Type IIInternally Excited)
F992-17(2022)	Standard Specification for Valve Label Plates
ANSI B16.11	Forged Steel Fittings, Socket-Welding and Threaded