A recent federal regulation concerning gas pipeline safety requires all natural gas utilities to notify their customers of their right to request installation of an Excess Flow Valve (EFV). An EFV is a safety device installed by Atmos Energy inside a service line as near as practical to the gas main. EFVs are designed to shut off, or significantly reduce the flow of natural gas if a service line downstream of the EFV is broken or severed. An EFV does not protect against leaks on customer house piping or appliances.
Many customers already have an EFV installed on their existing service line. Due to operating characteristics and limitations, in some instances, EFVs cannot be installed. Customers requesting an EFV installation may be responsible for paying for the cost and will be provided with an estimated cost and timeframe for installation. The installation of an EFV will be scheduled at a mutually agreeable date pending the approval of city permits, scheduling of line locates and weather conditions.
What is an excess flow valve?
An excess flow valve (EFV) is a safety device installed by Atmos Energy inside a service line as near as practical to the gas main that is located in your street, alley or easement. EFVs are designed to shut off, or significantly reduce the flow of natural gas if a service line is broken or severed. EFVs are not required for the normal, safe operation of your service line, but could help mitigate the consequences of a service line break.
Will an excess flow valve stop or reduce the flow of natural gas to my house?
An EFV does not protect against leaks on customer house piping or appliances. If you smell gas or suspect a gas leak inside your home, LEAVE THE AREA IMMEDIATELY. Then call 911 and Atmos Energy's emergency line at 866.332.8667.
Who will pay for and install the excess flow valve?
If your service line meets the requirements for the installation of an EFV, Atmos Energy will set up a mutually agreeable date with you for installation. The customer may be responsible for paying the cost of installation.
Can an excess flow valve be installed at my house or business?
An EFV can only be installed when certain operating conditions are met. To begin the process to determine if you are eligible to have an EFV installed, call our Customer Contact Center at 888.286.6700 during business hours (Monday – Friday, 7am – 6pm CST).
How long does an excess flow valve last and are there any maintenance or replacement costs?
An EFV is designed to last the lifetime of our distribution system. Atmos Energy will maintain the EFV after installation and customers are not required to pay future maintenance or replacement costs associated with an EFV.
Please take a moment to learn what to do if you detect a natural gas leak, the importance of calling 811 before you dig, and other helpful natural gas safety information.
Read the Safety Guide
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