Re: First thru-hull fittings
Ok. Here's the deal. You have a ball valve and a through hull on the seaward end, not a seacock..So do lots of boats. I'll try to explain the subtle difference.
Through hull threads are straight; ball valve threads are tapered. So while they appear to fit together, the threads arent locking together correctly. A flanged seacock has straight threads that match those of through hulls.
Additionally, a flanged seacock is held to the boat by screws through the flange. The arrangement you have, there is nothing to stop the through-hull from turning when you throw the handle.
Your setup will work, and does work for many.
But were I you, I would go the flanged seacock route. After all its a one time job, so why not cross all the Tees and dot all the ayes.?
Here is what a "proper" flanged seacock looks like:
ETA: Other advantages of a proper seacock are:
1. Has drain plugs
2. Has grease fitting
3. Square hole in handle allows you to use a socket wrench ( without a socket installed) to extend your reach to operate the lever
4. If it ever gets stepped on, its stronger
This new ship here is fitted according to the reported increase of knowledge among mankind. Namely, she is cumbered end to end with bells and trumpets and clocks and wires. It has been told to me she can call voices out of the air or the waters to con the ship while her crew sleep. But sleep though lightly. It has not yet been told to me that the sea has ceased to be the sea.--Rudyard Kipling