Excess Flow Valves An EFV is a mechanical safety device that is installed inside a natural gas distribution service line between the street and residential meter. Excess flow valves are primarily designed so that general usage, such as turning on appliances, will not trigger the valve to close.
Gas and Storm Safety As your community energy provider, Clearwater Gas System is committed to maintaining the highest safety standard possible.
Call Before You Dig Information from Sunshine811 on safety protocols regarding digging near gas mains.