Plumbing Problems

[tsilbert]

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

[AaHubb]

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.

[waybomb]

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.