Originally Posted by SEMIJim
LOL! No, Hal, I was wondering how one actually secures those flange adapters to the hull, not how one goes about securing ownership of them.
Btw: I noticed Groco has 1/2" thru-hulls, ball valves and hose adapters, but no 1/2" seacocks or IBVF-series adapters. I've sent them an email asking them why that is.
You can through bolt them, as I do, or drill & tap a fiberglass backer block or drill and screw some bronze lags into the marine ply backing plates. Be sure to use bronze bolts, screws or lags for "securing"!!!
While screwing is not as strong as through bolting it is still MUCH stronger than what you have now and perfectly acceptable if you're not comfortable with a through bolted installation..
Through bolting prior to fairing the holes over...