... DIN GOST ball valve for heating,approved by CE,GOST,ISO9001:2008 NameDIN GOST full welded ball valveSizeDN15-DN800MaterialBody,Carbon Steel,Ball,stainless ... Gear Box,Electric ActuatorPackageWooden caseCertificateCE,GOST,ISO90001:2008Welded ball valve as a new type of ball valve is widely used in urban central heating, ... use of welding noodle, reducing leakage outside. DIN Gost ball valve for heating