[77newell]

The valve is mounted on a steel channel between the frame rails just ahead of the axle. There are two valves there. One shuts off the air to the suspension system and the other shuts off the air to all other non-brake system uses. On my coach the "other" uses are supplies from two distribution manifolds, one up front and one in the rear of the coach. I believe there may be 1-2 "other" uses not not supplied by the manifolds but I have yet to locate them. I don't even know why I think they exist