copper beer ball valves Specification: 3/8'', 1/2'', 3/4'', 1'', 1 1/4" , ... 1 1/2" , 2" , 3" , 4" CE, Rohs, ISO9001:2000 copper beer ball ... or EN12165Valve Stem: Brass CnZn39Pb3 according to UNI-EN12164Valve Ball: CuZn39Pb3 standard En12164 with PlatingBall Gasket: PTFE (Teflon) ... Stem Sealing Ring: NBR 70 2. Size3/8'', 1/2'', 3/4'', 1'', 1 1/4" , ...