we use the same metering valve for wax, soap, foam brush , we used our last one and can't find the make or model of it to buy new, the person that build our carwash in the early 90s is no longer around its has a asco solenoid 174-879-2 24v, the panels are setup for this valve and would be tough to change out to a different brand, the number on the solenoid looks like fv1826532u8820 I think, not sure of the brand of the solenoid, any help would be greatly apreciated, has front nob for metering with a flange to mount to front panel. its normally closed 24v with black plastic body