... .corriosion resistant, heat preservation 3.customize for you butterfly handle gas ball valve1.Model No. : XLD-1119 2.Material:Body Brass:Hpb57 ... ,CW617n,CuZn39pb3,CuZn40pb2,CW3770,DZR.Ball: Brass as above,lead free brass,Brass ball.chrome coated,Iron ball chrome coated.Stem : Brass Stem ... :Normal or-20°C---150°C. 5.Medium:Water,Oil,Gas,etc. 6.Size:1/2'' 7.Surface: Yellow brass color ...