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Old 15-05-2020, 10:21   #1
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Join Date: Jul 2011
Location: Waveland, MS
Boat: 1979 Morgan 461, 46' sloop
Posts: 63
Adding a washdown pump

I want to add a saltwater washdown pump on my Morgan 461.

I have an unused BTW through-hull, currently capped off, located in a perfect spot in the engine room below a shelf where a pump would fit.

I've read/heard that one should have a dedicated through-hull for a washdown pump, and this would be. Here's the question:

Is there any reason why it would be a bad idea to go from the washdown pump to a Y-valve, splitting between (1) a line going forward to a fitting for a washdown hose at the bow for washing down the anchor and rode and (2) a line going aft (much less distance) to a fitting for a washdown hose aft of the center cockpit for washing down the aft deck (fish guts, blood, etc.)?

I realize having the pump situated a long way away from the bow washdown hose will decrease the pressure, but this seems like a better solution than installing two pumps and an additional through-hull.

Please let me know if I'm missing something. Thanks.
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Old 15-05-2020, 10:37   #2
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Join Date: Aug 2011
Location: Petersburg, AK
Boat: Outremer 50S
Posts: 2,965
Re: Adding a washdown pump

No real problem with a Y or T on the discharge side. If you use both sides at once you may be disappointed in the flow, but otherwise one will sit there fat, dumb, and happy while you use water from the other side. And with a decent hose you shouldn't have any problem at the bow with a pump aft. The only downside is that there are more places for a leak to develop, but that is true of nearly every plumbing system. And compared with two pumps and throughulls....
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Old 15-05-2020, 10:48   #3
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Join Date: Aug 2006
Location: Skagit City, WA
Posts: 22,310
Re: Adding a washdown pump

Should be fine. The bow is the most important location for that washdown hose really. Just remember, any leak in all that long under floor hose could result in putting water in the boat.... depending on your pump.
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard

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