PN#320189 SKU#17750 Solenoid Valve. Four-Way Spring Return Valve with External Manual Overide. Category: Lift Axle and Suspension Valves. Ports: 3/8″ NPT. Note: Applications include lift axles. Solenoid valve allows the driver to operate lift axles electronically. Constructed with the same materials as Velvac’s air accessory valves. The solenoid valve has a 12-volt power consumption coil that uses only 4.8 watts. Normal operating pressure 100 psi.