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Plumbing Problems

Discussion of AC's, plumbing and sanitation related issues.
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Scurvy Dog
Scurvy Dog
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Joined: April 16th, 2013, 1:45 pm
Vessel Info: I own a carver mariner 330 Year 1993

Plumbing Problems

Postby tsilbert » April 22nd, 2013, 4:47 pm

Hi My name is Ted Silbert, I own a 1993 Mariner 330. I love the boat, but I don't love the space to do any work on it. Carver makes the best layouts in a boat, but the engineers forgot that someone has to work on them down the road. Anyway, I have a leaking fresh water holding tank, or some fitting attached there. I haven't found it yet, but I work on it every weekend. Was wondering if anybody else has a mariner similar to mine and if they experienced any problems like mine. Part of my problem is that someone put hardwood flooring in my boat and I think they made the hatch to the holding tanks half the size, so I cant really even get the tanks out without ripping the floring out and I don't want to do that. Does anybody know the maximum pressure the tanks can be under before leaking starts. I just ordered a pressure regulator and I'm hoping by droping the pressure I can solve my problem. Does anyone know of common problems in this area, and the fix.
Thanks for listening

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United States of America
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Joined: February 16th, 2013, 5:46 pm
Vessel Info: '99 404 CPMY
my twin diesel pusher
Location: Kennewick, Wa
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Re: Plumbing Problems

Postby AaHubb » April 22nd, 2013, 8:06 pm

How and why is your tank being pressurized? To my knowledge fresh water tanks are vented to atmosphere and a pump pulls water from them.
'99 404 CPMY
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Joined: February 5th, 2013, 9:24 pm
Vessel Info: 1987 3697 Carver Mariner
1988 Cougar 46 Kevlar Vee offshore
1969 15' Glaspar / 1969 Johnson Electrmatic 85
1964 Barron Flat bottom drag boat
A couple of dinghies
Location: Saint Joseph and Trenton, MI
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Re: Plumbing Problems

Postby waybomb » April 22nd, 2013, 8:49 pm

Your tank is not pressurized.

When you hook up to shore water, there is a valve that shifts and your shore water bypasses the tank and pump.

The tank should be under no pressure other than the weight of the water.

If your tank is being pressurized, I would search for the shore water valve and repair or replace it. Simply follow the line leading from the shorewater connection and you will see where it ties into the rest of the system, and the valve.

That's why not only do you have a shore water connection, but also a water tank fill opening. Two separate systems connected to your faucets and ice maker feed system.
1964 Barron Flatbottom with BBC Chevy
1969 Glaspar Avalon /1969 Johnson Electromatic 85
1987 Carver Mariner
1988 Cougar Kevlar 46' with triple blown 572s
Past - 1988 2807, 1989 4207 Aft

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