Gas flow is controlled only at the appliance where the problem exists.
5/8 Inch OD X 1/2 Inch ID, 1/2 Inch MIP x 1/2 Inch FIP 24 Inch SS Gas Connector W/ EFV Automatically Activate Automatically Reset No Battery needed 100% Performance Tested Applications: Dryers, Boilers, BBQ Grills, Ranges / Ovens, Furnaces, Fireplaces, Space Heaters, Tankless Water Heaters, Rooftop Units, Manufactured Homes. The valve will remain activated until the gas line is properly repaired.Thrifco Plumbing 4408694 5/8 Inch OD X 1/2 Inch ID - 1/2 Inch MIP x 1/2 Inch FIP 24 Inch Long Yellow Epoxy Coated Stainless Steel Flexible Gas Connectors with EFV Gastop..