... Steel,Ball,stainless steelColourBlue and yellowUsageDistrict heating,water transport,gas transmissionPNPN 16- PN 40ConnectionFlange,Threaded,Butt-WeldedDrive Modes Flat ... Electric ActuatorPackageWooden caseCertificateCE,GOST,ISO90001:2008Welded ball valve as a new type of ball valve is widely used ... of steel pipe, valve body symmetry, can be a very good stress tolerance pipeline. Combined with the use ...