Home Pumpout System

Tedd

Tedd

.
Jul 25, 2013
763
TES 246 Versus near Vancouver, BC
Last year I bought a new house whose previous owners had thoughtfully installed an RV septic drain that's connected to the house's septic system. I finally got around to installing a pump-out system for the boat.
The system is based on a Bosworth "Guzzler" 500D hand pump with a "duckbill" valve. Apparently, the "duckbill" valve is critical when using the pump with holding tank effluent. I selected that pump some months ago and I've forgotten all the ins and outs of the choice but I'm happy with the performance. You can buy them on Amazon but I ordered mine through a dealer to be sure that I got the right valve.
It takes about ten minutes to empty my holding tank, which I think is 30 gallons.
[I thought I should add that the adapter I used for the holding tank port is a 1-1/2 inch cam-and-groove to 1-1/4 inch NPT. It took a while to figure out that the thread on the port is 1-1/4 NPT but I think that size is pretty standard, so I hope that information will be helpful to other sailors.]
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dlochner

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Jan 11, 2014
12,393
Sabre 362 113 Fair Haven, NY
The Duckbill serves as check valve. If you don't have on on the in and out sides of the pump and oriented the correct way, it won't pump.
 
Tedd

Tedd

.
Jul 25, 2013
763
TES 246 Versus near Vancouver, BC
Thanks, @dlochner . I should also point out that it has to be a "duckbill" valve, not the standard check valve that comes with most pumps of that kind. Solids in the effluent will block a standard check valve, according to Bosworth.
 
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Project_Mayhem

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Sep 24, 2018
3,127
Catalina 30 MKIII Chicago
Nice setup! I had one of those as a backup bilge pump. Careful not to over tighten the screws when you have to rebuild it. I'd look into which components are affected by UV to reduce the maintenance of your system overall
 
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Tedd

Tedd

.
Jul 25, 2013
763
TES 246 Versus near Vancouver, BC
Thanks, @Project_Mayhem . Good idea about the UV. I'm planning to make a shroud around the pump by adding an old piece of canopy that will hang from the hem of the main canopy. That'll keep UV (and leaves, rain, etc.) off the pump and fittings.
 
D

dlochner

.
Jan 11, 2014
12,393
Sabre 362 113 Fair Haven, NY
Tedd said:
Thanks, @Project_Mayhem . Good idea about the UV. I'm planning to make a shroud around the pump by adding an old piece of canopy that will hang from the hem of the main canopy. That'll keep UV (and leaves, rain, etc.) off the pump and fittings.
Click to expand
The most vulnerable part is the bellows on the pump.
 
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