The excess flow valve technology (EFV) provides an additional layer of protection from gas leaks, fires, and explosions. It has automatic protection against excess gas leaks with a high-temperature, flow-limiting internal valve. It also has error-proof bidirectional design with automatic reset for uninterrupted kitchen operations. For use with Dormont 1675 Blue Hose gas appliance connectors only. The kit features an excess flow valve (EFV), 2 leak test solutions, 2 thread sealants, and a detailed installation manual.