Quick view RA220 - 5 Port Spring Return Solenoid, w/ Manual Override, Internal Pilot 4-Way Single Solenoid, Internal pilot, 12 Vdc, 3/8 NPT Ports 4-way, normally closed 3/8 ” NPT, 12 Vdc valves. Air is normally suppliedto port #1. Air is normally open to port #2, and from port #4 to port #5. When energized, air flows from port#1... Compare