Excess Flow Valves

Hubbell’s GasBreaker® Excess Flow Valves (EFVs) provide an added layer of protection for gas distribution systems by automatically shutting off gas flow when a service line rupture or other excessive flow condition occurs. Trusted by utilities for decades and installed in millions of applications worldwide, GasBreaker EFVs are engineered to help improve public safety, reduce emergency response costs, and support regulatory compliance. Designed for reliable operation, simple installation, and long-term performance, these automatic safety valves are available for a wide range of residential and commercial gas service applications.