... Ball : CuZn39Pb3 stanard En12164 with PlatingBall Gasket: PTFE ( Teflon)Stem Sealing Ring: NBR 702. Size3/8" , 1/2" , 3/4" , ... connecting,body cap male thread(bonnet)should be coated with sealing glue.Handle turn or close freely.After assembling, test by ... also producing brass fitting,gate valve,check valve,angle valve,water tap,brass bibcock,brass connector for garden fitting,pipe fitting and so on ...