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Old 21-09-2019, 12:37   #1
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Diverter valve for wash down.

Hi guys I want to put a selector valve to my wash down spigot so I can choose fresh or salt water. Has anyone done this, can they recomend a valve? Would be nice if it was bulkhead mounted.
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Old 21-09-2019, 13:06   #2
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Re: Diverter valve for wash down.

I've seen it as standard setup for older Voyage 500 catamaran. Under the sink in the galley. So could use salt water to wash dishes, and then fresh water rinse. I assume.
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Old 21-09-2019, 14:19   #3
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Re: Diverter valve for wash down.

Easier and more reliable to put in a second spigot.
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Old 21-09-2019, 14:48   #4
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Re: Diverter valve for wash down.

Not for the sink, just for washdown so I can give a freshwater rinse. I live on the hook full time, have a watermaker so have fresh water to spare. Dent want a 2nd spigot on deck, just a selector valve. Having issues locating one.
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Old 21-09-2019, 16:15   #5
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Re: Diverter valve for wash down.

Something like this with a few fittings to get to the proper line size?
https://www.discountmarinesupplies.c...YaAloEEALw_wcB
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Old 21-09-2019, 20:35   #6
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Re: Diverter valve for wash down.

Should be able to find something suitable here.

https://www.specialtymfg.com/plastic...y-ball-valves/
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Old 22-09-2019, 10:00   #7
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Re: Diverter valve for wash down.

Bluesphere,

I have 4 of these Y-valves designed like waste diverter valves.



They are used to select fresh or raw pressure water at both toilets, and both deck washdown locations. They have been in use for 20+ years with never an issue... [yet...]

Do note they have a max pressure rating of 40 PSIG.

In case this is helpful.

Cheers! Bill
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Old 22-09-2019, 10:38   #8
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Re: Diverter valve for wash down.

Quote:
Originally Posted by bluesphere View Post
Hi guys I want to put a selector valve to my wash down spigot so I can choose fresh or salt water. Has anyone done this, can they recomend a valve? Would be nice if it was bulkhead mounted.
I have one on by boat it is simply made of 2 on/ off ball valves with a simple manifold.
Also give u the ability to shut down water supply for maintenance
All avaliable at home supply store about $25 total
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Old 22-09-2019, 10:47   #9
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Re: Diverter valve for wash down.

Just make absolutely sure it does not have a "both" setting because then you risk saltwater backflowing into and contaminating your freshwater system. A or B only type of valve.

Also, two separate On-Off valves as seen in an earlier illustration could cause a backflow situation if someone opens both valves at the same time....bad idea.

Be careful with buying brass valves at home centers. Saltwater corrodes through brass relatively quickly. You want silicon-bronze valves for saltwater if you are going to be using metal over plastic valves.
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Old 22-09-2019, 11:41   #10
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Re: Diverter valve for wash down.

Thanks guys, I appreciate the input.
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Old 22-09-2019, 11:44   #11
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Re: Diverter valve for wash down.

What you desire is what I installed a few years ago. I put a 1/2" Apollo (or similar) bronze 3-way valve plumbed right to the strainer on the pump.
As a precaution, a check valve is placed where I tapped off the potable water.
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Old 22-09-2019, 13:57   #12
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Re: Diverter valve for wash down.

Quote:
Originally Posted by David M View Post
Just make absolutely sure it does not have a "both" setting because then you risk saltwater backflowing into and contaminating your freshwater system. A or B only type of valve.

Also, two separate On-Off valves as seen in an earlier illustration could cause a backflow situation if someone opens both valves at the same time....bad idea.

Be careful with buying brass valves at home centers. Saltwater corrodes through brass relatively quickly. You want silicon-bronze valves for saltwater if you are going to be using metal over plastic valves.
Excellent points.
it came from the factory that way no problems 18 years. Probably bronze valves.
Also I have a separate fresh water tank for wash down (not connected to potable water)
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Old 22-09-2019, 14:12   #13
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Re: Diverter valve for wash down.

Should be separate plumbing systems due to risk of contaminating potable water.
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