... sizes 4)DIN,ANSI 5)CE,ISO9001:2008 stainless steel electric valvesMaterials: stainless steel High quality,Clear, light weight, rustless, oxidation ... manual override as astandard featureCommunication interfacesISO-Namur interfacesIt is widely used in chemistry, electron, metallurgy, plastic, electroplate, irrigation, treatment Sewage, engineering ...