Tech support from Hadley, working from home, returned my call within minutes of my leaving a message. He confirmed the leveling valves on our 2008 Beaver Contessa were the H01500UV. They would require inserts to step down from 3/8” to 1/4” air line.
I began calling a couple of truck parts distributors locally and found they listed the valve in their systems but had none in stock. Next week was the best guess as to when I would receive one.
I called Freightliner Northwest, where the coach is being worked on, to confirm the part number with them. After giving her the part number, Kelsey (service writer) said, “you know, we just may have one of those in stock”..... low and behold they did and the coach was ready for pick up last night.
Freightliner Northwest in Mount Vernon, WA is a good resource if you ever need service on your Beaver while in this area.