Brkert 6213ev standard solenoid diaphragm valves servo assisted 22 way burkert 221634 this standard solenoid valve has an orifice dimension of 20mm and a kv of 83msup3h 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 221 634 solenoid valve 24v dc g1 20mm 83mh polyamide coil