Two owners ago was a gadget guy. He put in a Microflush (out of California). It is air operated.
I narrowed it down to the Thetford Style plus #34429 and the Thetford Style II #42058.
Ted -I have the same Microphor Microflush in my Prevost, except mine is electric, no air required. Microphor has now moved from CA to either NC or SC, primarily to escape CA's anti-business regulations and tax policies. Mullaney Associates is their distributor, if you need help/parts, call Anna-Marie at 856-956-1299 - she knows her stuff!David - The Microphor air flush was design for when the toilet was not a direct drop to the tank,I had electric flush Microphor in my Eagle My MCI had an RV toilet with a "short" bowl, compared to a household unit with an elongated bowl. Not an issue for the wimminfolk, but very uncomfortable for us guy's "junk" when having to be seated. Lots of squiggling around to make sure you didn't pee on your socks as it shot out between the top of the bowl and the bottom of the seat!Thus the recommendation: Go to an RV supply house and check out the two models you're interested in in person to see and make sure you're getting one with an elongated bowl! Your junk will thank you for it!FWIW & HTH. . . RJ
I hear you RJ. Will look harder at it tomorrow but owners manual says air flush. The door that opens and closes is electric but I will look for an air line. It sounds like an air compressor goes off when you flush it.It flushes like....well, lets just say Rita and I flush after we are not sitting on it and there is nothing quiet about it in the middle of the night.I think there has to be air. I'll look.It does work great but fills with mucho water.I will jot down the name and phone number you sent. I'd hate to have to change it out. Parts are a good thing....