44+ Excess Flow Valve Natural Gas UK. Stop the uncontrolled release of system media when a downstream line ruptures. If you require a higher demand of natural gas volume, any redesign in service lines and/or efvs may be your financial.
If there is a significant increase in the flow of gas (e.g., due to a damaged line), the efv will trip or close to.
It is designed to shut off the flow of natural gas automatically if the service line breaks, for example, by an excavation accident. Lg&e is not responsible for piping and. Efv's are installed on the service line near the connection to the natural gas main. If you require a higher demand of natural gas volume, any redesign in service lines and/or efvs may be your financial.