Re: Water pickups and Seacocks
BB,
For your use a regular thruhull with a ballvlave would be fine. The secocks with the flange are for big holes in your boat. Seein as the SC hull is only 3/8 of an inch thick, this would be overkill. But if you want to install them correctly, you need to dry fit all the pieces, including the 3/4 marine grade plywood backing plate, then mark the holes on the flange. These are drilled all the thru the hull and recessed and 5200 n place then nuts and washers on the inside.
I used the plate seacoks on my seawater intake on my big boat, for wash down and live well, just ball valves.
Good luck,
JW
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