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JumboJet's avatar
JumboJet
Explorer
Oct 11, 2016

Ever Replace a Toilet in an RV

I just had the privilege of replacing the 14 year old toilet in our Class A. The valve would stick and continue to fill the bowl, resulting in water on the floor!

It must be easy to install those when being built.

The water connection was on the opposite side of the new Dometic 310 toilet I installed. The manufacturer used a very hard PEX connection directly to the back of the old toilet.

Thank goodness for the PEX type connectors that are available at the big box hardware stores. I connected the toilet with a braided SS flexible hose too, like you would use in your house.

The space where the supply line runs is also the space for a heater vent hose, copper lines, PEX lines for the shower, and 5 Romex electrical wires. Careful cutting the toilet supply line!

Still need to finish the panel that covers all the space, but I will get that done this afternoon.

  • I installed the same porcelain toilet in two different RV's. Both required extending the water line to reach the new valve location, but since I always add an inline shut-off valve anyway, that was an easy process. In the first RV, the hardest part was removing the screws holding the flange to the floor and rotating it so the hold down bolts would line up properly with the new toilet. The second RV already had the flange properly positioned, making the whole job take only about an hour.
  • When I bought my new toilet a year ago they asked me which side of the toilet I wanted the water line connection on. I too used a braided SS flexible hose with a shut off valve. Easy install for me.
  • Yes, I replaced our original 13" high plastic commode with a 17" high ceramic bowl commode from CW two years ago. No issues for me, just two nuts and the water line. Everything lined up...I must have been living la vita loca that day.
  • I replaced ours last year. All the water holes around the top ring were clogged with mineral deposits. Same issues you faced. Original PEX water line was on opposite side of toilet. I used a SharkBite fitting to connect the PEX tubing I had to cut.