Brkert 6213ev standard solenoid diaphragm valves servo assisted 22 way burkert 221732 this standard solenoid valve has an orifice dimension of 25mm and a kv of 11msup3h the 22 way valve features a servo assisted spring coupled diaphragm that supports valve opening and closing suitable for use with neutral fluids water hydraulic oil and oil without additives brkert 221 732 solenoid valve 230v 50hz g1 14 25mm 11mh epoxy coil