... Ball Valve, Square Head Sizes: 3/8", 1/2", 3/4", 1" Model No.: 1021BCSA Approved Brass ... Square HeadSizes: 3/8", 1/2", 3/4", 1"Features:• Femal x Female - Two-Piece Body - Double O-Ring Packing ... - PTFE Seats - Square Head• CSA Certified - 1/2 PSI for Indoor ... 20.1http://www.hpmetalwork.com/product/235-2-piece-brass-gas-ball-valve--csa-approved-1021b-66b6 ...