This specification covers self-contained automatic shutoff 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. Automatic shut-off valves shall be of the following types, styles, sizes, pressure ratings, and end connections: Types I and II; Styles 1 and 2. Each automatic shut-off valve must pass the following tests: visual examination; hydrostatic shell test; seal tightness test; external leakage test; and set-point test.
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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 values stated in this specification in inch-pound units are to be regarded as the standard. The SI equivalents shown in parentheses are provided for information only.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F992 Specification for Valve Label Plates
American National Standards Institute (ANSI)
ANSIB16.34 ValvesFlanged, Threaded, and Welded End
Military Standards and Specifications
MIL-F-1183 Fitting, Pipe, Cast Bronze, Silver-Brazing, General Specification for
NAVSEA803-1385946 Unions, Bronze Silver Brazing, WOG for UT Inspection
Nitrogen atmospheres; Shipboard materials/applications--specifications; Shut-off valves; Air systems; Valves--marine vessels;
ICS Number Code 23.060.01 (Valves in general)
ASTM International is a member of CrossRef.
Citing ASTM Standards
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