Cruising Sailors Forum Archive

To calrify....

A seacock is a valve with an integral flange. The threads on the "sea" side of the seacock are straight. The threads on the boat side of the seacock are pipe threads.

A ball valve, as I am using the term is just a valve WITHOUT a mounting flange. A ball valve has pipe threads on both sides.

Thru-hull fittings (sometimes called "mushrooms" have straight threads.

Only an idiot tries to mate a ball valve with a thru-hull fitting.

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