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Topic: Microphor Toilet and Gray Line (Read 363 times) previous topic - next topic

Microphor Toilet and Gray Line

When connected to city water, is there a hazard in leaving the gray dump valve open?  We NEVER leave the black valve open, of course.  But our concern is whether, with the gray valve open, a problem in the RV park's sewer system could "erupt," enter the coach through the open gray dump valve, and end up in the shower or sink traps?

Related: does the Microphor toilet that was original equipment in our 1999 U320 have some sort of intermediate gate (or whatever), so there is no direct connection to the black tank?  We've been pleased by no black tank odors, which we had occasionally with the direct dump pedal-activated toilet in our travel trailer.  We continue to treat the black tank as we did with the trailer, but really appreciate the fact there seems (?) to be a second level of odor protection somewhere?

The selected media item is not currently available.Richard & Susan Peck
____________________
1999 40' U320 "Bob Patrick"
(2000 4010 U320 WTFE Floor Plan, Single Slide)
Build #5567  |  MC #17522

Re: Microphor Toilet and Gray Line

Reply #1 –
Quote from: LookingWest –
1, is there a hazard in leaving the gray dump valve open? 

2.  But our concern is whether, with the gray valve open, a problem in the RV park's sewer system could "erupt," enter the coach through the open gray dump valve, and end up in the shower or sink traps?

3. Related: does the Microphor toilet that was original equipment in our 1999 U320 have some sort of intermediate gate (or whatever), so there is no direct connection to the black tank? 

1. My big concern is sewer flies getting into the holding tank.

2. If the campground has that much backflow it should be flowing out at the ground level (like an empty site) and not enough pressure to rise to the level of your coach.

3. The only flapper that seals off your coach from the holding tank on an LF-220 is the one you can see and moves

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: Microphor Toilet and Gray Line

Reply #2 –
One huge trick to keep the LF-200 Microphor  bowl holding water is: when the coach is stored or not in use daily... leave the valve open. This keeps the seal gasket from being indented and dry thus causing water leakage. To make the valve stay open, use the switch under toilet lid to halt the valve in mid-cycle. I then put a Nerf ball, etc. over the open hole. No smells and no leaking valve rubber seal. Don't forget to clean the porcelain seal occasionally with a rag, etc. where the flapper valve seats.

Jim
Jim Frerichs
2002 U320 42'