On very bottom of the picture is picture of bronze thru-hull with straight thread.My first big project on my little boat!
The Catalina 22 was built with a garden-hose style valve glassed directly to the hull for the sink and cockpit drain. I'm replacing it with a bronze thru-hull.
This might be mass overkill for a tiny boat that will be sailing on a tiny lake, but one of my goals with this boat is to learn how to do things The Right Way so I'll have the experience for future, larger boats.
So I've got a printout of Maine Sail's instructions, and a big pile of 1" bronze hardware:
Any tips, tricks, or advice?
Usually nut of some sort tightens(this is fancy one) it from the inside. This is all covered with lot of some kind glue to make permanent seal. Then comes ball valve with tapered pipe thread on both side. Question is how this can work straight thread and pipe thread?