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Old 17-12-2014, 08:02   #31
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Re: Freshwater-Flush Plumbing

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Originally Posted by HopCar View Post
Boatyarddog, Toilet odors, caused by salt water flushing, usually come from flora and fauna that comes in with the water and is trapped in the rim of the toilet bowl. They die there and rot. Dumping a bucket of fresh water into the bowl won't help with this problem. You need to send the fresh water into the toilet through the intake side of the toilet. A strainer in the salt water intake line can greatly reduce this problem as well.
That's it in a nutshell. Odor from salt water flushing shows up as coming from the head itself when flushed, especially the first few times after not being used for a while. The odor will be inside the boat rather than from the holding tank vent outside the boat.
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Old 17-12-2014, 08:35   #32
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Re: Freshwater-Flush Plumbing

Bucket of fresh water works a treat.

I'm all for extra fresh water plumbing for convenience but the caveat is fresh is fresh and will never be connected to any grey or black water system.

Dealing with contaminated fresh water or diesel for that matter is a total pain.

If you ever get a contamination issue you likely wont know until you've consumed some contaminated water. That is the real risk.

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Old 17-12-2014, 09:11   #33
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Re: Freshwater-Flush Plumbing

Most marine toilet manufacturers (not just Raritan) make at least 1 version that is compatible with fresh water flushing. Still have to use the vacuum break as Sailorchic explained. But many marine toilets cannot be connected to pressure fresh water because the seals are not designed to handle that much pressure.
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Old 17-12-2014, 17:29   #34
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Re: Freshwater-Flush Plumbing

Terra Nova I think you'll find that Raritan is the only company who makes a manual toilet designed to connect to your fresh water system. All of the others are electric toilets.
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Old 19-12-2014, 19:37   #35
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Re: Freshwater-Flush Plumbing

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For anyone with room for an extra tank, this is a great idea. To expand on this idea, a valve could be installed to allow flushing with either water from the flush tank or with sea water. You really only need the fresh water if the head won't be used for a day or more.
3.5 gal header tank good for 6-7 flushes it's also above the waterline
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Old 19-12-2014, 20:02   #36
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Re: Freshwater-Flush Plumbing

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Terra Nova I think you'll find that Raritan is the only company who makes a manual toilet designed to connect to your fresh water system. All of the others are electric toilets.
Yes, but even the Manual Raritan uses a vacuum breaker. Its mounted at the back of the bowl under the plastic cover. Landside toilets still use an air gap in the tank or flush valves. It is a recognized method to protect the potable water systems.
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Old 20-12-2014, 17:10   #37
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Re: Freshwater-Flush Plumbing

I've converted both my PHII's to the "fresh head".
I like them, they are much easier to operate and seem to work well. Some seemingly minor things I like much more about them, the pump handle is collapsable and does not get in the way of your leg like the PHII does. The Joker valve is much easier to replace as well, you can tell the fresh head is evolved and some issues fixed
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