Originally Posted by
truk4u
Jim,
I also have bench tested the Microphor after rebuilding in my 97 Marathon. The little line that gets a squirt of water each time you flush is sort of a mini P-trap designed into the Microphor and sounds like yours is working as you described.
On my Marathon, there were several plastic valves in various places in the PVC vent pipes that were designed to allow air to be pulled into the pipe. I don't remember what they were called, but if one is bad and stuck open, you will get some stink. I had one under the galley sink and don't remember where the others were located.
Jeep, jump in here, I don't remember the name of the valves!!!