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  • 1 Post By arf145
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Old 04-17-2012
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Unhappy Marine Head plumbing

I purchased my C&C 27 MK1 early 2011 and still trying to figure out the systems and years of improvised do-it-yourself fixes. In particular, I am having trouble wrapping my head around the plumbing for the head. I replaced the previous unit because I figured the seals were faulty due to the "colour and smell" of the clean water being pumped back into the head while flushing. I bought a new Jabsco unit and the installer used the same lines. Yesterday I was horrified to learn that the "clean water" was actually re-circulated waste from the holding tank. I had assumed that water was being pulled from the lake by means of a thru-hull. With a wife, 2 young children, and the friends of my 2 young children, I need a system that works!!
Thanks for your help,
Dan
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Old 04-17-2012
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Re: Marine Head plumbing

There should be 2 hoses on the head one to the holding tank and one to a through hull with a shut off valve in line somewhere. follow the hoses and see where they go. There should also be a vent line off the holding tank to the extirior of the boat. If there is no through hull for fresh water cap off the intake for the head and carry a 4 litre bottle of water in the head for flushing.
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Re: Marine Head plumbing

Yeh, unfortunately both lines from the head terminate at the holding tank. I have a large compartment in the v-berth available- do you think a bladder with clean water would work if I re-routed the line to it?
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Re: Marine Head plumbing

I don't see why the bladder would not work as long as it is accessible to fill. Sounds like the other line should go to a deck fitting for pumping out.
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Re: Marine Head plumbing

The larger of the 2 lines heads to the holding tank and than the same diameter line heads to the deck fitting. Do you have a thru-hull on your boat?

Thanks for your input.
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Old 04-17-2012
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Re: Marine Head plumbing

The current issue of Good Old Boat has a nice illustrated write-up on "holding tank essentials" that diagrams several different systems.
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Re: Marine Head plumbing

Yes with a ball valve at the hull fitting, this line runs directly to the intake on the head
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Re: Marine Head plumbing

We have a thru-hull for the flushing water--pretty common I think. However, we flush with shore water in bottles to reduce odor (we sail in bay water, not fresh), so we don't open the intake seacock. I like the idea of a bladder for flush water though.
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Re: Marine Head plumbing

Recirculating, eh? One of the PO's really committed a bone headed change with that one! I'm wondering if the original intent was to flush using water from the fresh water tank to reduce odor? Changing from a through-hull to suck in salt water to tapping the fresh water tank would require a Y valve in the fresh water line. Depending on where it is located that could be easy or difficult ...
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Marine Head plumbing

NATURE'S HEAD...I know that doesn't help you're current situation, but really, consider it
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