Nitrile Butadiene Rubber (NBR) seats and dual o-ring. Threaded ends meet ANSI 1.20.1 and flare ends meet ANSI 1.1. Coated aluminum T-handle. Rated for 200 psig. Certified 5 psig for house piping systems. UL approval only for threaded x threaded valves. For use with natural, manufactured mixed gases, liquified petroleum and LP gas-air mixtures.