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ASTM F1793-97(2004)
- Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air Or Nitrogen Service
- standard by ASTM International, 05/01/2004
- Publisher: ASTM
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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.