Help identifing function of air valve
I posted the photo below to the National site and it was identified as a Norgren valve. Now i am trying to figure out its function. (The photo is looking up.)
The RV is a National Tradewinds LE with a Cat 3126E. The chassis is a Spartan 2002. I believe it is a Mountain Master. The valve is located on the frame just in front of the primary and secondary air tanks. It has what I believe are 3 air inputs, 2 electric controls, and what looks like an air relief hose.
There is a pdf picture available but it does not match this model. Can someone confirm this is the air dump valve? the 3 lines are from left front, right front, and rear air bag systems.