slonda828 wrote:Does that second stage have 2 exhaust valves? What a weird design. Can you find parts for it? I kind of want to tinker with one.
Yes, there is a small one directly across the box from the 2nd stage inlet. I suppose it did help reduce exhalation effort.
I don't think they were around very long. I remember them as touchy to service and adjust properly, and the complexity didn't seem worth the effort for the minimal benefit in performance... if indeed there really was any as advertised. Maybe I just wasn't doing it right, but there is some reason they weren't kept in the line. Probably hard to find the 2nd stage seat/poppet and the relief valve inline with it, but someone did post a photo of one of the former a few years back asking what it was. Don't remember who.
If I had one of the regs I would give it to you!