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Old 05-10-2007, 10:40 AM   #1
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Would appreciate any help. I'm fitting a new toilet and holding tank to my 25' Triton. My plan was to have an electric head with macerator which could pump either directly overboard in places where it is allowed or to a holding tank to be either removed at a shore based facility or pumped overboard where legal. My question is my electrical supply is limited and I would like to use a manual pump from the holding tank, is this possible and does any one know of any designs.

Another newbie question......
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Old 05-12-2007, 10:18 AM   #2
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Good Question !

Hand operated pump very feasible ! First ! Need to know what size holding tank? - what material ? what shape? - How/ where will it be located?

How many users ? (average)

I am not sure that a macerator is necessary - many pumps like the Henderson will move a tennis ball through the eye of a needle.

The Pump can be used to pump into the open sea or into a holding tank and out of the head and out of the holding tank with a couple of Y valves.

Keep your electricity for distilling moonshine.
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Old 05-12-2007, 11:12 AM   #3
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Like Richard, I do not think a macerator is necessary. I have a Lavac vacuum toilet with a Henderson Mk5. It seems to do the job well and is idiot proof. Page 493 of the West Marine 2007 cattle dog, gives some great info on marine dunnies. . If you don't have the catalogue, go to westmarine.com and search 'marine sanitation'.

Best wishes

David.
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Old 05-12-2007, 06:07 PM   #4
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A manual pump is all we've had for our holding tanks. A Whale diaphragm pump. Works really well. A centrifugal pump would be inefficient and prone to clogs, I think.
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Old 05-12-2007, 10:29 PM   #5
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"......and prone to clogs, I think".

Wellllll...the dutch should keep their shoes out of the toilet!
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Old 05-13-2007, 01:31 AM   #6
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It's those dancing American toilets and pumps you have to watch out for! http://www.doubletoe.com/
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Old 05-15-2007, 04:27 AM   #7
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Quote:
Originally Posted by Auzzee View Post
Like Richard, I do not think a macerator is necessary. I have a Lavac vacuum toilet with a Henderson Mk5. It seems to do the job well and is idiot proof. Page 493 of the West Marine 2007 cattle dog, gives some great info on marine dunnies. . If you don't have the catalogue, go to westmarine.com and search 'marine sanitation'.

Best wishes

David.
----------------------------------------------

Check this web site for various installation options :-

http://lavac.com/installation-notes.htm
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Old 05-16-2007, 11:07 PM   #8
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Thanks very much everyone. Due to Regs in my part of the world (Morteon Bay Queensland) I will have to use a macerator unless I am offshore. So I think I will have an electric toilet and use a manual pump to pump out of the holding tank. Don't you just love regulations. Anyway thanks for your help.
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