Forum Discussion

TenOC's avatar
TenOC
Nomad
May 28, 2018

Inquiring Minds -- Plumbing -- Full gray water tank

I have a North Peak 5er by Hartland. I expected that when the gray water tank became full that water would backup in the shower pan since that is the lowest drain point. However this is not what happ...
Dutch_12078's avatar
Dutch_12078
Explorer III
May 28, 2018
As Old-Biscuit said, Hepvo drain traps would cause exactly the OP's situation. Think "check valve" on the shower drain.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,350 PostsLatest Activity: Jan 17, 2026