Excess Flow Valves (EFV)

Since CoServ Gas was established in 1998, we have been committed to providing our Customers with safe and reliable natural gas service.  Our system was developed using modern materials and best practices, including the use of excess flow valves (EFVs).

EFVs stop the flow of gas if the service line is cut, broken or leaking. CoServ Gas installs EFVs on all new construction, which includes nearly all single-family residential service lines.

Federal regulations require us to notify Customers of their right to request an EFV. However,  CoServ Gas has taken a proactive approach to installing EFVs and/or manual shut-off valves on all existing service lines at no cost to our Customers. CoServ Gas is also committed to maintaining and replacing equipment, as necessary, at no charge.

The installation of EFVs on existing CoServ Gas Customers is substantially completed.

Even so, we have deployed an EFV and/or manual shut-off valve verification-and-installation program on some of our existing natural gas service lines in accordance with federal regulations.

If it’s determined that your house needs an EFV installed, our deployment team will contact qualifying Customers to discuss the installation process. 

For more information, check out the frequently asked questions below. To request verification of an excess flow valve at your home or business, please complete this form.

Frequently Asked Questions

What is the benefit of an excess flow valve (EFV)?

EFVs are designed to automatically stop the flow of natural gas from a cut, broken or leaking service line. Stopping the flow of natural gas from a broken service line significantly reduces the risk of a natural gas incident that could result in personal injury and/or property damage.

Why is CoServ Gas installing EFVs?

Since 1998, CoServ Gas has installed EFVs as part of our standard equipment for applicable new construction, which includes nearly all single-family residential service lines. While recent natural gas regulations require us to notify existing qualifying Customers of their right to request installation of this device, we have proactively chosen to perform this installation on all qualifying service lines through a multi-year program. That program is now substantially complete.

Will the installation come with a cost to me?

No. CoServ Gas has chosen to absorb the cost to install and maintain the device. It will not cause natural gas bills to go up.