As I said. I changed the thru-hull by careening on a low tide. Got the old one out and went to put the new one in and fond out I had the wrong size! Now the tides is starting to come back and I'm rushing to the chandlery to get the right size and got the
new thru-hull in with maybe a 1/2 inch to go before water would be coming into the boat. Groundhog, read up on this. Talk to people who have changed theirs. Get everything you need together and I would recommend that you change both the thru-hull and the valve. You will also need a tailpiece for the valve. This will screw into the valve and
you will attach your hose to this with TWO hose clamps.
Buy the hose clamps at the chandlery not the hardware store. You want marine grade for all of these parts. Lastly, buy both the 1 1/4" and the 1 1/2" sizes because you might have either size. You can always return the size you don't use. Don't forget bedding
compound and I like to use a wooden backing plate between the inside of the hull and the nut you are going to screw down on the thru-hull. If you can wait until your next haul out it will be easier. You will need anther person to do this. The thru-hull is
going to have a couple of little projections on the inside of it. There is a tool that will fit inside the thru-hull and it will engage these projections so that the thru-hull will not turn when you are tightening the inside nut. You can probably get by using
a slip joint pliers instead of the special tool. One person on the outside with the tool and another on the inside tightening
the nut. This is going to be a very big nut and you probably don't have the right size wrench. I use water pump pliers. Good luck and if you have any questions please ask. It sounds harder than it is. Walt
From:
AlbinVega@yahoogroups.com AlbinVega@yahoogroups.com on behalf of Jon Phillips jonphillipsmsw@... [AlbinVega]
AlbinVega@yahoogroups.com
Sent: Tuesday, September 19, 2017 9:27 AM
To:
AlbinVega@yahoogroups.com
Subject: Re: [AlbinVega] through hull valve
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If you decide it's time to replace, go with a high-quality bronze ball valve (e.g. Groco or Apollo) from a reputable marine store (NOT a hardware store). Someone double check me but I'm nearly positive that 1 1/4" is the standard size toilet and sink
outlets. 3/4" for toilet and engine intake. 1/2" for sink raw water intake. The valves are widely available but, again, do not skimp on quality here. It has been my experience that when you replace the valve, it is nearly impossible not to break the bond between the thru hull and fiberglass. If the thru hulls are in good shape you can rebed with 3m 5200. You may opt to replace the thru hull too upon
inspection, but they are inexpensive compared to the valves. Cheers!On Tue, Sep 19, 2017 at 11:57 AM, ground hog
groundhogyh@... [AlbinVega]
AlbinVega@yahoogroups.com wrote: