Join Date: Mar 2007
Location: New England
Thanked 7 Times in 7 Posts
Rep Power: 8
I am replacing my engine cooling intake grate/thru-hull from a 1/2" to a 3/4" grate.
The 1/2" threaded grate has only one flange mounting hole in the back where a long thing bronze screw secures it from not spinning. It is also where I put a grounding wire to it. Basically the threaded portion is the primary mean of securing it to the hull.
The 3/4" grate has 2 or 4 mounting holes, plus the threaded section, to secure to the hull. The plan was to use this in conjuction with true seacock or a thread it into a seacock flange and then put a ball valve, with the correct thread, on top of the flange.
The issue is that the flange has three mounting holes, GROCO FULL FLOW BALL-TYPE SEACOCK
, and the thru hole strainer 2 to 4 mounting holes. I am concerned that if use all the holes, the seacock flange will cover the thru-hull and vise versa. I am also adverse to drilling a bunch of hole in the bottom of the boat for screws.
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Last edited by Faster; 03-14-2011 at 12:55 PM.
Reason: fix auto filter