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Excess Flow Valves for Fuel Gas Service, NPS 1½ through 12

To provide a Standard Practice for Excess Flow Valves, NPS 1½ through 12, designed for use in fuel gas piping systems to reduce the flow of gas should the flow in the system exceed some predetermined level.
This Standard Practice covers Excess Flow Valves of pipe size NPS 1½ through 12, used in fuel gas piping systems.


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October 27, 2021

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