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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Excess Flow ValveCustomer Notification

Final rule.

This final rule requires operators of natural gas distribution systems to provide certain customers with information about excess flow valves (EFV's). Specifically, customers of new and replaced single residence service lines must be provided written notification about the availability of these valves meeting DOT-prescribed performance standards, and related safety benefits and costs. If a customer requests installation, the rule requires an operator to install the EFV if the customer pays all costs associated with installation. EFVs restrict the flow of gas by closing automatically if a service line breaks, thus, mitigating the consequences of service line failures. This regulation would enhance public awareness of the potential safety benefits from installing an EFV.

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