Sealed center valve - water ballast issue

[WidespreadSailing]

P.S. My boat stays in the water 98% of the year down in the FL Keys.

[Newell]

No plans, no pics, sorry.

This project was difficult to my standards. Because there is no pilot hole for cutting a larger hole into the transom ballast tank, it was necessary to make a plywood template that I screwed onto the hull where the new screws would go for the new gate valve. This guided the hole saw correctly. There is no room for error.

[Matt19020]

If you need to cut it out with a dremmel you could use something like this to reseal the valve:
http://www.boaterbarn.com/images_produc ... 747big.jpg

[Hamin' X]

You could nest a 3" hole saw inside the 4" one and use it as a guide.

~Rich

[Newell]

You could nest a 3" hole saw inside the 4" one and use it as a guide.

~Rich

Yes, if the factory placed the 3" hole equi-distant from the top and bottom of the tank. The factory was always perfect according to Roger?

[Hamin' X]

Good point. As always, YMMV.

~Rich

You could nest a 3" hole saw inside the 4" one and use it as a guide.

~Rich

Yes, if the factory placed the 3" hole equi-distant from the top and bottom of the tank. The factory was always perfect according to Roger?