On the regular K design
the valve is screwed to the coning tower from the inside and simply has a layer
of sealant between the valve body and the tower wall. No O-rings or anything.
I've had issues with this arrangement leaking, and on the new boat I've put in a
proper SS through-hull for the stem, which is sealed with an O-ring plus a
backup. However, I will say even when the K version leaks it's an irritant
rather than a danger. In my experience these leaks have taken the form of
a "weep" or slow drip, not anything that could actually flood the boat in
any meaningful way.
The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it.
How is the valve handle sealed at the point where it penetrates the hull ?
I've seen both configurations but couldn't see how the handle penetration is
sealed.
Frank D.