Bathroom Sink Water & Drain Line Routing 19' Scamp

[Tcjmiami]

I am replacing the shower pan in my front bathroom 1987 19' scamp.
The previous owner "rigged" a leaking mess, that I have pulled out.
I have a factory new shower pan and would like to know how to run the water and sewer lines.
I am fairly confident that the supply lines run around the floor under the "lip" of the shower pan from the closet.
The drain is a different issue.
Does it drop straight down through the floor then under the trailer to the pump area?

[Keith2000]

Yep.

Mine is a side bath 19, but I assume the basics are the same. Straight through the floor, rv p-trap thing, pump secured to the bottom of the floor. I think the pump outlet tube ran through part of the frame on its way to the gray tank, iirc.

[Dennis mn]

On my2020, the drain follows the supply pipes out of the bath into the space under the lowest step. It then drops through the floor to a trap separate from the shower. It then tees with the shower drain on it's way to the drain screen, then the pump suction.

[Keith2000]

Doh! I was thinking shower drain. You are correct about sink drain, I think. We removed our sink.

[floyd]

My sink drain (13D front bath) goes through the wall and then through the floor where it tees into the line from the shower drain. That line then goes through a filter to the lift pump where it is then pumped back to the gray water tank.

[BrunoSandoval]

You can try running an additional water supply pipe from your home's common sewer pipe. And connect the drain accordingly to the pipe, which is responsible for the waste. You can drain the water into a cesspool if you do not have a central sewer. It is difficult for me to advise how best to carry out the requirements since you need to see everything clearly and look at the building plan. The cost of a mistake can be great, to the extent that if a pipe bursts, water damage repair may be required. For this reason, it seems more reasonable to turn to specialists who can also offer a work plan.