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Old 11-05-2006, 02:40 PM   #15
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Our boat had an electric marine toilet that was plumbed as part of the fresh water system and did not use sea water. The holding tank was at least 10 ft from the toilet and worked just great. (Pulled about 20 amps)

Most RV toilets work on the gravity feed system with the black tank directly below the toilet.

I would think you could use the marine toilet and put the black tank just about anywhere as long as it is slightly below the toilet or you use a check valve if black tank is even with or higher than the toilet.


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Old 11-05-2006, 02:48 PM   #16
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On our boat the Sealand head had a mascerator built in we used a large foot pump with a 2 or 3" line to pump out the black tank, worked much faster than using a mascerator pump.

Camping World sells a set up like you are asking about but I don't remember the name of it. Allows you to empty the black tank up hill or long distance to a home septic system.


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Old 11-05-2006, 03:15 PM   #17
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Silvertwinkie--Wilcox Crittenden makes a santa cruz model with a macerator and wall switch, but draws 30 amps. Raritan makes the sea era electric toilet with a macerator that draws 18.0 amps. Retail these toilets are $549.00 and $464.00 respectively at West Marine. Find someone with a port supply account (wholesale) and you could probably lower the cost greatly. --Mark--
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Old 11-05-2006, 04:30 PM   #18
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Originally Posted by malconium
I have been thinking of installing a mascerator pump on the output side of my holding tanks. I have the impression that some forms of marine toilet arrangements have a single mascerator pump that can be used for pumping from the toilet to the holding tank and for pumping from the holding tank to the outlet for dumping. Does anyone have any specific knowledge or experience they would like to share about that type of installation - if it is possible?


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This is the easy way. Clear elbow with water fitting and quick disconnect discharge line. Use thickened epoxy to glue the pump to the elbow. I use this to pump out my tanks to my home cleanout which is 4 feet off the ground. It just fits where the hose attaches and I run it with a 20 amp battery charger. I have a extension which uses anderson power poles to connect to trailer battery if need when on the road.

Good Luck Jim

Jim N5TJZ Air# 174
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