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.
Safety Discover essential tips, guidelines, and best practices to ensure a secure environment for you and your loved ones. Find information on leak detection, storm safety, excess flow valves and more.
Call Before You Dig Information from Sunshine 811 on safety protocols regarding digging near gas mains.