Electric bilge pump

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033Shalom
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Electric bilge pump

Post by 033Shalom »

Has anyone installed an electric bilge pump in addition to the manual pump? If so, is it possible or desirable to link the two outlet pipes together so the water pumps out the same hole in the transom? Or is it preferable to drill an new hole in the hull somewhere else?

Many thanks.
Mitch
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Re: Electric bilge pump

Post by Mitch »

I have an excellent bilge pump 'down the hole' in the sump, it has an automatic switch and can also be worked manually via a switch. The two outlets do, I think, join together at a 'Y' piece but if I recall there has to be a one-way valve in each line before the Y piece (I will check next time I have the hatch open, its chaotic in there at the moment).
The major problem with the pump is that the sump is so deep you cannot access the pump in situ - I just pull everything out via the outlet pipe.
The pictures show a temporary repair when the new pump went in, the original connections were crimped butt joints that were simply taped up. The later finished job included a waterproof junction box, more liquid insulation and some self-amalgamating tape to finalise the whole package.
(The one way valve can be seen in the line of the hose.)
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Pump_2.jpg
Pump_1.jpg
Last edited by Mitch on 11 Jul 2021, 11:09, edited 1 time in total.
40ursa_minor
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Re: Electric bilge pump

Post by 40ursa_minor »

Ursa Minor has an electric bilge pump mounted on a removable stick to allow servicing. When I bought Ursa Minor both electric and and the manual pump were plumbed to the same exit in a botched manner with no non return valve. There was a spare outlet point on the hull which had been abandoned for some reason so I took the simple solution of splitting the pumps to separate outlets. The only downside is the electric outlet discharges port side so could hit the dock. I should have had them connected the other way round with the electric going over the transom but it works.
033Shalom
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Re: Electric bilge pump

Post by 033Shalom »

Thanks for the info. Once way valve and a Y piece seems to be the popular route!
blueprintbill
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Re: Electric bilge pump

Post by blueprintbill »

It is possible to tie into your manual bilge pump transom outlet with your electric bilge pump. However you should be cognizant of the possibility of a tall following sea backing up and flooding your bilge with water. Be sure the bilge pump piping loops high to the top of the inside of the transom before dropping to the y connection with the manual pumps pipe connection thru the transom.
It’s a tall order to be pumping water from the bottom of the bilge to the top of the transom, so a bigger pump adequate to the task should be employed.
091Duloe
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Re: Electric bilge pump

Post by 091Duloe »

Just for the record. I have electric and manual which join with a Y just before exit to transom. And yes they loop high.
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