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Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 10:32 am
by Sheppie62
I just got my boat in the slip and pulled the ballast tank transom valve up, and the metal rod broke from the sliding valve door part inside the assembly

.. I was able to use a flat head screw driver to open valve (in the slip under water) and rod works to push it closed. (1) First question

are all these 3β valves the same? Anyone know the manufacturer/ part number? (BWY wants $60 plus shipping). (2) If I change to different valve, will the screw holes line up? (3) can I install this while in the slip, underwater? I understand 5200 adhesive works underwater??? Maybe I could inflate my 2 paddle boards under back of boat (with ballast tank empty of course).

I just thought maybe I can just use the guts out of the new valve? Leaving sealed part glued on boat? Yes I tried screwing handle back in

Re: Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 10:43 am
by Sheppie62
Ok I did a search online and found the manufacturer/ model numbers. I did one here first and nothing came up? Weird

Re: Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 12:15 pm
by Starscream
I replaced our 2002 26X valve with this one:
https://www.amazon.ca/gp/product/B000BG ... UTF8&psc=1
It fit perfectly. The bolts were a little tricky because there were nuts on the inside of the tank. Three of the nuts stayed put in the original sealant, but we lost the fourth to the depths of the ballast tank.
I wouldn't want to do that in the water. I needed my 10 year old son's hands to reach inside and thread the replacement nut.
Re: Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 1:07 pm
by Sheppie62
Was your original valveβs gate stainless? It think mine is plastic. Wondering if it makes any difference?
Re: Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 3:11 pm
by Starscream
Sheppie62 wrote: βSat Dec 04, 2021 1:07 pm
Was your original valveβs gate stainless? It think mine is plastic. Wondering if it makes any difference?
Original had a stainless gate, this one is plastic. One year in, I see no operational difference. I'm in fresh water tho.
I also bought the valve extender handle, and although the long extension isn't too sturdy, it's a very convenient add.
Re: Replacing 3β transom valve while in the water?
Posted: Sat Dec 04, 2021 4:19 pm
by NiceAft
Sheppie,
I'm just asking because I don't see it, but which Mac do you have? And year. Also, are you somewhere that is warm enough to even perform a task submerged?
1998 26x
Posted: Sun Dec 05, 2021 7:34 am
by Sheppie62
Our boat is a 98 26x, it is in Mission Bay San Diego I think water is about 63 degrees now. I have a wetsuit, but I was just going to try it hanging off the back deck, I am able to open valve now that way with a flathead screw driver. I suppose I could beach it Backwards, when tide is almost fully out, then change it, then wait for tide to rise. I ordered the stainless one for $39, but I think maybe plastic would have been better? (and cheaper). No electrolysis while in marina.
Re: Replacing 3β transom valve while in the water?
Posted: Sun Dec 05, 2021 8:04 am
by NiceAft
Can you move as many heavy items as you can into and onto the bow? The less in the stern, and the more that can be moved forward, the more the stern rises.
Re: Replacing 3β transom valve while in the water?
Posted: Sun Dec 05, 2021 5:17 pm
by Tomfoolery
NiceAft wrote: βSun Dec 05, 2021 8:04 am
Can you move as many heavy items as you can into and onto the bow? The less in the stern, and the more that can be moved forward, the more the stern rises.
Just keep an eye on the water level at the vent in the bow, as loading heavy things forward will cause the ballast water level to rise at that end. I found that out the hard way when I launched without moving all my heavy crap back to where it belongs after trailering. Water started coming over the cup that surrounds the vent hole.

Re: Replacing 3β transom valve while in the water?
Posted: Sun Dec 05, 2021 5:23 pm
by NiceAft

Is there no cap, plug, stopper on that vent? Is that normal for an X?
Re: Replacing 3β transom valve while in the water?
Posted: Sun Dec 05, 2021 9:14 pm
by Be Free
A standard expanding boat plug fits the vent hole in the "X". The vent should be closed when the tank is full.
Re: Replacing 3β transom valve while in the water?
Posted: Mon Dec 06, 2021 4:34 am
by NiceAft
Be Free wrote: βSun Dec 05, 2021 9:14 pm
A standard expanding boat plug fits the vent hole in the "X". The vent should be closed when the tank is full.
Thatβs what I thought; thatβs what I have in my

.
When filling the ballast, I stick an index finger into the vent, about an inch (2.5cm). When the water level reaches the finger I insert the expanding plug; that being said, if the ballast is empty while attempting to work on the transom valve, all the better.
Re: Replacing 3β transom valve while in the water?
Posted: Mon Dec 06, 2021 5:44 am
by Tomfoolery
Re: Replacing 3β transom valve while in the water?
Posted: Mon Dec 06, 2021 5:47 am
by Starscream
Tomfoolery wrote: βSun Dec 05, 2021 5:17 pm
Just keep an eye on the water level at the vent in the bow, as loading heavy things forward will cause the ballast water level to rise at that end. I found that out the hard way when I launched without moving all my heavy crap back to where it belongs after trailering. Water started coming over the cup that surrounds the vent hole.
Wow! I didn't know that was possible. I always thought our X was relatively heavy when we travel, but even when fully loaded with gas, water, food and toys, plus the family, the ballast only fills to about a quarter inch below the top of the hole. And then the "cup" must be another six inches on top of that.
I wonder if there is a design difference up there between 99 and 02. Before you mentioned your experience, I would have bet that there was nothing I could possibly do to get the ballast to overflow the cup.
I thought the cup was there for aggressive sailing or major waves only; I never would have thought that loading the boat could have brought the plug below the waterline. Were you travelling with your Weider Gym weight set in the V-berth?
Re: Replacing 3β transom valve while in the water?
Posted: Mon Dec 06, 2021 7:09 am
by Tomfoolery
Starscream wrote: βMon Dec 06, 2021 5:47 am
Were you travelling with your Weider Gym weight set in the V-berth?
No peeking!
That vent plug will actually hold back water when heeled, by the way. The ballast tank is wide at the stern, and the plug is on the center line, so when it's heeled there is water elevated above the plug level. Imagine the boat sitting on its side, for an extreme example. So it's important that the vent plug seal reasonably well if you don't want ballast water coming in.
The cup around mine is only a couple of inches above the tank at most, by the way. Perhaps later ones have taller cups.
