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Old 04-21-2015, 07:48 PM   #1
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City: Baltimore Md
Country: usa
Vessel Name: Graceful
Vessel Model: Marine Trader
Join Date: Jul 2013
Posts: 81
Newbie 101

Okay , Finally got our new to us Marine Trader 34. We've always had sailboats so this is really something new. This might sound simple but like I said we're really new at this trawler thing. Today I wanted to flush out the water tanks ( 2-75 gals ) so i filled both up and started to drain by opening up the faucets aboard. After awhile one tank was empty but the other ,still full. So I figured there must be some kind of valve to change tanks. After an hour of crawling around -no valve was found. Am I missing something.

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Old 04-21-2015, 07:53 PM   #2
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City: Bohemia
Country: USA
Join Date: Sep 2014
Posts: 140
Probably, no, there has to be, a valve. Either to turn the tank on, or to switch from one tank to another. Look for a "Y" valve?

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Old 04-21-2015, 07:56 PM   #3
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Don't know about Marine Traders, but our boat has two 85-gallon water tanks in the lazarette. They are connected together with a shutoff valve at the connection. But there is no provision for shutting off one tank or the other, just both together.

The valve is located very low and tucked back under the platform holding the tanks and a holding tank that sits between them. Your setup may be totally different but there is probably a shutoff valve somewhere in the system. It may be a left-right-both-off type valve that is set to the tank that is empty and should be moved to "both."

Or---- perhaps the tank that is still full has a blocked feed line.
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Old 04-22-2015, 06:20 PM   #4
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City: Brookline
Country: USA
Vessel Name: Blue Heaven
Vessel Model: Albin 43 classic double cabin, twin 135 Lehmans
Join Date: Sep 2013
Posts: 385
I have 2 100 gal tanks, each with a shutoff at the tank with a Y after the shutoff. The are located at the aft ends of the tanks which are under the master bed. If you didn't dig a bit you would never see them.

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Old 04-23-2015, 12:24 PM   #5
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City: Trenton
Country: USA
Join Date: Apr 2012
Posts: 672
If your MT 34 is like mine there is a pair of gate valves at the bottom of the tanks in the lazerette. They corrode internally as do the attached nipples. Crawl down there and remove the valves and see the condition of those nips. Nice boat. Good luck!
Al Johnson
34' Marine Trader
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