USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Archived Rulemaking: Excess Flow Valve Installation on Service Lines

54-fr-21524.pdf (1.39 MB)

Excavators frequently sever or damage gas service lines causing loss of life, injury, or property damage by fire and explosion. RSPA proposes to require the installation of excess flow valves (EFVs) on certain new and replaced gas service lines to improve safety and mitigate the consequences of service line incidents. EFVs shut off the flow of gas by closing automatically when a line is broken.

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact
Last updated: Thursday, August 16, 2018