Pump Out thru deck

Posts about the Galley and Head systems, including plumbing, water, and propane
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Cathyalan
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Joined: Tue Nov 17, 2009 11:47 am
Location: Stoughton, Wisconsin
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Pump Out thru deck

Post by Cathyalan »

While in Escanaba, MI last year the dock hand who pumped us out suggested we carry our own pump out adapter as he suggested the Telstar's was "not common" and that I may run into a situation where the marina couldn't do a pump out.

Does anybody know the adapter needed?

Alan
Cathy & Alan #313
Ron
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Joined: Mon Nov 24, 2008 6:15 pm
Location: SW Florida
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Pump Out thru deck

Post by Ron »

What was the problem? Was the pumpout rubber connector too large or too small to fit in the Telstar's port? It's rubber and they can usually be jammed in, but ?

Sealand makes a bunch of "adapters" in various sizes. Measure the diamater and threads per inch of your fitting, then google Sealand Nozall. Here's an example of 1 1/4 inch and 16 tpi - http://www.boatersplus.com/dometic-corp ... 43504.html.

Many marine stores would carry this.
Ron Marcuse
Telstar 28 #359 "Tri-Power"
Dan

Pump Out thru deck

Post by Dan »

Getting and carrying an adapter is probably a good idea.

It would also be a good idea, at least if you sail on the ocean, to re-configure your boat so that you can dump the holding tank when out past the three-mile limit yourself. Many areas do not have pumpout facilities, and if you decide to go cruising on your boat in those areas, you'll need the ability to empty the holding tank yourself.

I generally recommend re-plumbing the head so that the head discharges directly into the holding tank. You would then cut the 1.5" hose that goes to the deck pumpout fitting and re-purpose the diverter valve by putting the diverter valve into that line, with the common input port coming from the holding tank.

One of the switched output ports would lead to the deck pumpout fitting. The other would lead to manual diaphragm pump, like a Whale/Henderson Mk V, and then to the seacock/through-hull, allowing you to empty the holding tank overboard. You could use a macerator pump instead of the manual diaphragm pump, but that adds expense, complexity and increases the places the system can fail and the maintenance the system will require.

The diverter valve is important for two reasons. One, when using the deck pumpout fitting, it protects the diaphragm pump's check valves against being damaged by the suction of the pumpout station. Two, it can be locked, which is often required by law if you're sailing in an NDZ or on inland waters.
Cathyalan wrote:While in Escanaba, MI last year the dock hand who pumped us out suggested we carry our own pump out adapter as he suggested the Telstar's was "not common" and that I may run into a situation where the marina couldn't do a pump out.

Does anybody know the adapter needed?

Alan
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