[bryguymi]

Since the most recent post in this thread is going on a year old, here's an update. The air solenoid that operates my curbside dump valve is an AR0, P/N: A212SD – 012 – D. I called Fluid Handling Dynamics, talked to a guy by the name of Nick, 419–633–0560. He confirmed with me that the current part number, as Tom has listed earlier in this thread, is 118597–12. $117 for the whole solenoid, $32.60 for the rebuild kit. I ordered the rebuild kit. ?