Chaninging from Porta-Potti to pump out - SailNet Community
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post #1 of 14 Old 02-20-2010 Thread Starter
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Question Chaninging from Porta-Potti to pump out

I am wondering how difficult it is to make a boat with a porta-poti to have a pump out or even add a holding tank. Yes I realize the size of the boat and any extra space is a consideration. Again, I realize that, just looking for some information about the work. I just looked at a Hunter 25 online and it got me wondering. Are there kits you can ad to your porta-potti for a pump out?

Thanks in advance.

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post #2 of 14 Old 02-20-2010
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I don't think there is a pump out kit for a porta-potti. It's not hard to install a conventional head with a holding tank and pumpout but with proper through hulls and hoses it can get expensive. here's a link to head options and installation. Installing a Head by Don Casey

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post #3 of 14 Old 02-20-2010 Thread Starter
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Thanks for the info!

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post #4 of 14 Old 02-20-2010
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We put the Sea-land 6 gallon porta-poti with the deck pump kit out on the 35'

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post #5 of 14 Old 02-20-2010
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There is at least one porta potti model that has the capability of being plumbed to a pump out and/or holding tank. It has a 1.5" hose connection built into it. In so doing I believe the head becomes a lot less portable though.
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post #6 of 14 Old 02-20-2010
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Easiest would be to install a porta potti with pumpout capability like the Thetford 735. If you can find a spot for a holding tank, then a manual head can be installed. A lot more work, but probably worth it.
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post #7 of 14 Old 02-20-2010
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depending where you sail a thru hull isn't necessary just a deck connection for pump out and tap the flush water from a sink drain .
don't put any more holes in your hull than you need.
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post #8 of 14 Old 02-21-2010
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Quote:
Originally Posted by JimsCAL View Post
Easiest would be to install a porta potti with pumpout capability like the Thetford 735. If you can find a spot for a holding tank, then a manual head can be installed. A lot more work, but probably worth it.

No easiest and cheapest would be installing a home made composting head.
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post #9 of 14 Old 05-30-2012
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Re: Chaninging from Porta-Potti to pump out

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Originally Posted by cb32863 View Post
I am wondering how difficult it is to make a boat with a porta-poti to have a pump out or even add a holding tank. Yes I realize the size of the boat and any extra space is a consideration. Again, I realize that, just looking for some information about the work. I just looked at a Hunter 25 online and it got me wondering. Are there kits you can ad to your porta-potti for a pump out?

Thanks in advance.
We have a 22 foot cruiser. We installed a Dometic 764 MSD. It has been plumbed for both dock side pump out and seaside pump out. Originally it was only a dock side pump out. The holding capacity or these are small and we have the smallest so I wanted the seaside pump out option.

If you have a dockside pump out now then conversion is simple. Add a y diverter which will go to the dockside line and also feed to a macerator. From the macerator the line should run up to a vented loop and then to a seacock and thru hull. Pretty simple really.

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post #10 of 14 Old 05-30-2012
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Re: Chaninging from Porta-Potti to pump out

Installing a holding tank isn't all that hard. My boat came without a usable tank (the one it came with was only three gallons, with out a proper vent, and with sketchy fittings), so I installed a new one (13 gallons). The biggest hassle I found was finding a suitable location for the tank. I decided that I wanted the tank to stand upright. That allowed for the location of all the fittings on the top of the tank, thus minimizing the chance of a leaky fitting. But it also necessitated glassing/epoxying a firm base for the tank, and sacrificing most of a locker to the project.

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