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High Volume Excess Flow Valves: Documents

The following documents are intended to serve as a resource for distribution operators, manufacturers, and the public.

81 FR 70987, October 14, 2016: Docket No. PHMSA-2011-0009, Pipeline Safety: Final Rule: Expanding the Use of Excess Flow Valves in Gas Distribution Systems to Applications...

High Volume Excess Flow Valves

High Volume Excess Flow Valves

Welcome. This site is administered by the Pipeline and Hazardous Materials Safety Administration (PHMSA).

Excess Flow Valves (EFVs) are safety devices installed on natural gas distribution pipelines to reduce the risk of accidents. EFVs are...