CenterPoint Energy

Excess flow valves
An optional device for some CenterPoint Energy customers

The excess flow valve is a device that can be installed by CenterPoint Energy on your home’s natural gas service line (the underground line that runs from the main line to the meter). Excess flow valves are designed to completely shut off or significantly reduce the flow of natural gas if a natural gas service line becomes damaged. However, they do not protect against leaks beyond the meter assembly (house piping). These valves are designed to permit normal operation of a service line, but automatically restrict natural gas flow when the flow exceeds prescribed limits, such as when a service line breaks due to excavation or other similar activity. When activated, an excess flow valve may prevent the buildup of natural gas and lessen the possibility of a natural gas fire, explosion, personal injury and/or property damage.

The installation cost will vary from house to house, depending on the difficulty of installation. The average cost to CenterPoint Energy customers requesting the excess flow valve installation is expected to be $800. Due to operating characteristics and limitations, in some instances, excess flow valves cannot be installed. Each situation will be evaluated upon request.

To learn more, about installing excess flow valves at your expense, please read our frequently asked questions.