Model No.: 1021B CSA Approved Brass Gas Ball Valve, Square Head Sizes: 3/8", 1/2", 3/4", 1" ... Approved Brass Gas Ball Valve, Square HeadSizes: 3/8", 1/2", 3/4", 1"Features:• Femal x Female - Two-Piece Body - Double O ... ANSI B1.20.1http://www.hpmetalwork.com/product/235-2-piece-brass-gas-ball-valve--csa-approved-1021b-66b6/ 2-Piece Brass Gas Ball Valve