Converting GM Heads to freshwater

[davidwigler]

Whenever it rains a lot the lake water turns muddy and the heads are disgusting. What's involved in converting the 32 volt GMs to freshwater? Is there a serious risk of flooding if a solenoid sticks open?

[MikeP]

Raz Marine sells a kit to do that: http://razmarinepumps.com/marine-toi...ump-parts.html

[Cricket]

We took a different path on converting the heads to freshwater, added a dedicated pickup to the tank with a manifold to supply each head. If you go that root make sure each supply has a check valve.

[doc g]

It could only flood you the amount of water in your water tanks unless you are connected to dockside water. I did 3 on my old boat and just used water solenoids connected so that they opened when the pump is on. In other words just connected to the hot wire on the pump motor. I also kept the old plumbing so it can be an easy switch back if need be......Pat

[Mike in S Fla]

It could only flood you the amount of water in your water tanks unless you are connected to dockside water. I did 3 on my old boat and just used water solenoids connected so that they opened when the pump is on. In other words just connected to the hot wire on the pump motor. I also kept the old plumbing so it can be an easy switch back if need be......Pat

Im thinking about doing mine, any chance of backflow contaimination?

[dottieshusband]

Whenever it rains a lot the lake water turns muddy and the heads are disgusting. What's involved in converting the 32 volt GMs to freshwater? Is there a serious risk of flooding if a solenoid sticks open?

Move down to WindRiver....on Tellico, beautiful water. Come on down David

[dottieshusband]

Whenever it rains a lot the lake water turns muddy and the heads are disgusting. What's involved in converting the 32 volt GMs to freshwater? Is there a serious risk of flooding if a solenoid sticks open?

Move down to WindRiver....on Tellico, beautiful water. Come on down David

[davidwigler]

Move down to WindRiver....on Tellico, beautiful water. Come on down David

I like being able to walk to work. By the way, do you want my 32 volt DC bulbs?

[dottieshusband]

Can't blame you liking the ability to walk to work, whatever that is! FWIW, I think my boat was originally fresh water heads. The old fresh water supply lines lay alongside the raw water supply lines at the head pump. So I'm thinking to switch back, I'd just close the raw water ball valve and switch hoses at the supply end of the pump. Might not be that easy, but it appears so. I haven't tried your LED trick yet, but that looks like the way to go.

[davidwigler]

I think my boat was originally fresh water heads. The old fresh water supply lines lay alongside the raw water supply lines at the head pump. So I'm thinking to switch back, I'd just close the raw water ball valve and switch hoses at the supply end of the pump. Might not be that easy, but it appears so.

I think you will need a 32 volt solenoid valve as the freshwater pressure of 50 psi or more is much greater than the raw water pressure.