Hawaiʻi Gas customers can purchase an excess flow valve (EFV) for their home or business. If you are interested in obtaining more information on EFVs, please contact your local Hawaiʻi Gas office. Certain conditions may prohibit the installation of an EFV.
An EFV is a device that’s designed to automatically restrict the flow of gas if your service line ruptures between the gas main line and gas meter. Please note, EFVs do not stop or restrict the flow of gas for leaks or faulty equipment on the customer's side of the gas meter.
An EFV is installed on the service pipeline that runs underground between the gas main in the street and the meter on your property.
An EFV can restrict gas flow if an excavator or heavy machinery accidentally ruptures a service line. Likewise, if a gas meter is damaged during a car crash or similar incident, an EFV can restrict the flow of gas. This helps to reduce the chance of a gas related damage or injury.
If you are interested in having an EFV installed on your service pipeline for your home or business, contact your local Hawaiʻi Gas office to get started. Please note, customers requesting this upgrade will be responsible for all costs associated with the installation and maintenance. Installation typically involves digging up the service pipeline, installation of the EFV, and any paving or concrete work as required. Restoration of any paving or concrete work will be scheduled at a later date. It is possible gas service may be interrupted during installation of the EFV. Hawaiʻi Gas will coordinate with you to schedule the installation and any follow up work.
The cost to install an EFV at your home or business may range from $2,500 to $7,500, or more, based on specific site conditions. An estimate can be provided to you.