Plumb Shop Brasscraft CSSL44E-48P 1/2-Inch MIP x 3/8-Inch MIP x 48-Inch Gas Connector Use with low to moderate demand residential commercial gas appliances not subject to frequent movement Not to exceed up to 48,000 BTU's at maximum capacity CSA approved for indoor and outdoor use, Approved and listed by CSA and IAPMO to ANSI Z21.24, ANSI Z21.75. and CSA 3-92 The Safety+PLUS excess flow valve protects the home from fires and explosions due to gas line ruptures and disconnects at the appliance ProCoat polymer coating resists corrosion due to harsh chemical residue and vapor exposure in common household cleaning, plumbing repair, and masonry products