Join Date: Feb 2010
Location: Narragansett Bay
Thanked 561 Times in 538 Posts
Rep Power: 11
Re: plumbing head question
Iím reminded of the Jeanneaus that have the holding tank elevated behind cabinetry in the head. There is a short pump out run to the deck immediately above and a drain at the bottom of the tank, that goes to a single thru-hull to gravity discharge the tank into the sea. When you close the thru-hull valve, contents are contained in the tank. When open, each flush directly discharges, even though it passes through the tank first.
There are a couple of challenges with this design. First, there is a ~4 ft rise from the back of the head to the top of this tank. Suffficient clear water needs to be flushed to chase out waste from this rising hose, or it will permeate and stink. That extra flushing can fill the capacity of the tank more quickly. Secondly, when the thru-hull is closed, there is a section of hose that is the first to fill with waste. Iíve known this hose to collect compacted solids and block. Worse, however, is that it will also permeate and stink. Waste hoses should never have standing waste in them.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
In the harsh marine environment, something is always in need of repair. Margaritas fix everything.