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.
Carbon Monoxide Detectors The city of Clearwater and Clearwater Gas System recommend the use of carbon monoxide detectors with gas stoves and/or other appliances.