... environmental 2.corriosion resistant, heat preservation 3.customize for you butterfly handle gas ball valve1.Model No. : XLD-1119 2.Material:Body ... . Handle : Iron handle,Stainless steel handle,Aluminium handle,Plastic handle.Nut : Brass nut,Steel nut,Iron nut,all Zinc plated ... . Connection : Theaded ISO228,BSP,NPT,UNION.3.Technics: Forged, Chrome plated, ...