Small seacocks?

[mrybas]

Does anyone make seacocks smaller than 3/4'' (like 1/2'')? I have salt water intake for the galley foot pump that is currently 3/8'' with a ball valve, but would like to be able to bolt to the hull with a seacock. It's in a locker that will like be full of canned food bouncing around.

[garymcg]

I just replaced a 1/2" thru hull/seacock with 3/4" because I wasn't able to find anything smaller. The old thru hull was flush on the outside, an appropriate sized hole saw for a 3/4" fit over the entire flange of the old 1/2" so I cut it out from the bottom which made installing the 3/4" a piece of cake.

[CS271409]

Forespar has a 1/2" seacock in Marelon. I have a couple of Marelon seacocks on my boat and they have proven to be robust.... strong enough to counter flying cans of pork and beans?? Not sure.

Here's a link.
Forespar Seacock - Pride Marine - Ontario Canada

[TommyD]

I understand bolt-on seacocks are used instead of ball valves, but given that thru hulls have a nut holding them in place how do the seacocks install? I've had my C&C for a half dozen years & it came with ball valves installed. Even the 2 last original gate valves which I am not removing simply thread onto the thru hulls, no flanges.

TD

[CS271409]

TommyD,
Seacocks thread onto the through hull fitting and then secured to backing plates with through bolts. The backing nut on the through hull fitting is not used. Mainesail has a great website providing detailed information on this here:
Compass Marine Project Articles Photo Gallery by Compass Marine at pbase.com