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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...
Old-Biscuit's avatar
Old-Biscuit
Explorer III
May 28, 2018
Instead of a conventional 'P' trap on shower drain they possibly used a 'Hepvo' waterless drain trap on horizontal run. Less space needed and they only allow flow one direction (internal 'duck bill' closes when no water is flowing)

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