Action
Final rule.
Summary
In the process of routine excavation activities, excavators often sever gas service lines causing loss of life, injury, or property damage by fire or explosion. Excess flow valves (EFVs) restrict the flow of gas by closing automatically when a line is severed, thus mitigating the consequences of service line failures. In this final rule, RSPA has developed standards for the performance of EFVs used to protect single-residence service lines. If an EFV is installed on such a line, it must meet these performance standards.