Brkert 6213ev standard solenoid diaphragm valves servo assisted 22 way burkert 227539 this standard solenoid valve has an orifice dimension of 40mm and a kv of 30msup3h 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 227 539 solenoid valve 24v dc g1 12 40mm 30mh epoxy coil