A valve and actuator assembly includes a valve to control a flow of liquid into a coil, and an actuator to control the valve. A chromium layer over a mask layer, which is over a quartz layer, of the PSM is patterned according to a semiconductor design. By decreasing the rotation speed of the electric motor at a rate smaller than a normal decrease rate when the cargo handling device stops operation in a state where the power steering device and the cargo handling device are in operation, a kickback in a steering wheel due to a response delay of the priority flow rate control valve can be prevented. A terminal group is molded in the terminal fillister of the insulating body.