MV-522 manual 5/2 pneumatic directional valve

MV-522 denotes a generic OEM family of manual five-port, two-position pneumatic directional valves used to control the forward and return strokes of a pneumatic cylinder. The MV-522 size uses 1/4-inch ports; the specific manual actuator is identified by a suffix such as R, PB, TB, EB, PP, PPL or LB. Because the listing gives no suffix, the base family model is recorded without unsupported pressure or temperature claims.