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Old 17-11-2020, 03:57   #31
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Re: Leaking Ball valve

Well, one solution would be a BSP valve with a parallel thread:

https://www.asap-supplies.com/produc...-female-405727

Not cheap in bronze, bit cheaper in DZR:

https://www.asap-supplies.com/produc...e-ports-405707

Likely need plumbing tape to seal it.

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Old 17-11-2020, 08:17   #32
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Re: Leaking Ball valve

Mr. Dockhead. I never stated flanged seacocks were the ONLY way to do this.
I read carefully through all my posts again and itís just not there. I have stated in several posts on other subjects the following:
There is no perfect boat design. No perfect material. No perfect building method.
I have four standpipes and a seachest.
I have one motorized ball valve and am doing further literature research and real world testing because I kinda like the concept.
I have a lot of boatbuilding friends worldwide. How they would design and build their personal yacht is often very different from the boat they produce and sell.
Faster boat, faster assembly, less costly components...just business as usual.
It produces good things and bad. I number of builders who have tried to put cost aside have failed. When it comes to advice on how to repair, I advise based upon seaworthiness first, cost secondary because I know someone will always suggest the simple less expensive way. Wack in a plug, twist off the valve, your done.
Not exactly how it goes all the time.
There are some markings on the OP valve. I think one is CWP..cold working pressure? Canít make the other one out..BOC, BOD..? Brass valve? Well...
Happy trails to you.
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Old 17-11-2020, 09:34   #33
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Re: Leaking Ball valve

Quote:
Originally Posted by Manateeman View Post
Mr. Dockhead. I never stated flanged seacocks were the ONLY way to do this.
I read carefully through all my posts again and itís just not there.

Well:
Quote:
Originally Posted by Manateeman View Post
. . . I donít see anyone arguing this solution is incorrect. I posted THE correct method. . . .
[emphasis added].


But now you've walked that back, so all good



Quote:
Originally Posted by Manateeman View Post
I have stated in several posts on other subjects the following: There is no perfect boat design. No perfect material. No perfect building method.

That's more like it


Quote:
Originally Posted by Manateeman View Post
There are some markings on the OP valve. I think one is CWP..cold working pressure? Canít make the other one out..BOC, BOD..? Brass valve? Well...

Fully agree that if the OP has a brass ball valve, it must be replaced (and all the rest of them on the boat if he finds any more). But he's doing that anyway; that was not his question.


Cordially, DH
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Old 17-11-2020, 16:14   #34
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Re: Leaking Ball valve

Greetings all. I stand properly corrected for my post.
I apologize to the group and to Dockhead .
I trust it will be accepted.
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Old 18-11-2020, 01:40   #35
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Re: Leaking Ball valve

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Originally Posted by Manateeman View Post
Greetings all. I stand properly corrected for my post.
I apologize to the group and to Dockhead .
I trust it will be accepted.
Captain Mark

Are you kidding? Why are you apologizing? You have nothing to apologize for. On the contrary, you started a lively discussion with a forcefully argued position based on deep experience -- we are all grateful to you. It's great to have you around; differences of opinion are the spice of life. We wouldn't have anything to talk about if it were different.
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Old 20-11-2020, 14:44   #36
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Re: Leaking Ball valve

I with Manateeman on laying your boat over on lower to change it or heeling your sailboat enough to have the thruhull above water. Either way a couple of extra hands and Plenty of spare parts should be at the ready
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Old 20-11-2020, 14:57   #37
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Re: Leaking Ball valve

Quote:
Originally Posted by Manateeman View Post
Greetings all. I stand properly corrected for my post.
I apologize to the group and to Dockhead .
I trust it will be accepted.
Captain Mark

Mark, you put your experience based belief forward, based on your location and the products used there, as did I. It's just that we are half a world away and available products and indeed practices differ. I checked with my go to supplier of marine bits n pieces and his comment was that all ball valves that he sells, be they stainless or bronze, are parallel threads as are the through hulls, so down here at least they play well together.
Cheers.
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Old 20-11-2020, 17:30   #38
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Re: Leaking Ball valve

Do not bang in a wooden plug. It won't seal. Through hulls have a little tab inside the hole at the outside edge that is used in conjunction with a tool to keep the fitting from rotating when you are tightening the nut on the inside. This tab will keep any hard plug from completely sealing. The wooden plug will also expand in the water and it will be very difficult to remove. I have seen this entire scenario happen on a friends boat and he took on a serious amount of water before we got the valve changed.

I carry onboard a range of very large rubber test tube type stoppers that would fit my through hulls just in case I have a leak, etc.
A wooden plug will not seal from the outside.
Cheers.
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Old 21-11-2020, 01:51   #39
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Re: Leaking Ball valve

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Originally Posted by Honeymoon 26 View Post
Good Morning, I and about to replace a leaking ball valve on the toilet waste side.The handle spindle shaft broke and it is leaking a little bit. I am going to do it in the water, anyone have any tips.

If things go pear shaped you will be in trouble. Murphy's law remember?

If the through hull fitting gets dislodged or becomes loose when you try to unscrew the valve there is nothing you can do to stop major water ingress.
I would not attempt it and I am a shipwright.
Wait till the boat is out of the water and just put up with a little leakage which can be controlled.
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Old 22-11-2020, 02:40   #40
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Re: Leaking Ball valve

@ OP :


You have a Honeymoon 26, a motorboat, about 30-38 years of age.
It cannot be tilted, like a sailboat can be.

You are in NSW, Australia. Sure they have a travelift in a port near you.

Get your boat on the dry, and change the whole thing.
Anything else is bound to be a stressful event.
Take your time !
I know many of us are DIY'ers, but sometimes the money spent on useful work is worth it.
This is the case for you. Spend on the lift.

You don't want to sink yourself and your ship because of a leaking valve, or a broken seacock, right ?

So check ALL the other valves and seacocks at the same time, when your boat is on the dry. Give them a good kick or two. You never know if any previous owner has changed one of the seacocks to a sub-standard material.
If it is made of unsuitable material and corroded, it may crack easily.

There are many unsuitable materials around for seacocks and valves.
This article in Yachtingmonthly, June 2011, explains it well :
https://www.google.com/url?sa=t&rct=..._TClyRVb0hLTlK

At the same time, check your hull for cracks (and repair them) and give it a good hull paint.
You won't regret it !
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Old 22-11-2020, 03:40   #41
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Re: Leaking Ball valve

Honey Moon your local slipway can usually do a quick slip and just leave you in the slings while you replace the ball valve. Personally I would replace the skin fitting as well, just because that fitting must be 30+ years old? Also when you replace the skin fitting you get a chance to position the valve handle where you want. You simply do that buy doing up the valve tight by hand before you do up the skin fitting nut. I am a big fan of Sikaflex or Fixtec to stick it all together.
By the way to all the posters I had no idea how complex skin fittings can be!
Cheers
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Old 23-11-2020, 07:25   #42
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Re: Leaking Ball valve

Quote:
Originally Posted by Bill O View Post
A quick question, why is there a hose clamp near the nut of the thru hull?

I don't think you ever got your question answered. Can't be 100% certain, but I've seen boats use a hose clamp like this to secure a bonding wire to the thru-hull. There a green wire running through the photo, but can't tell if it's connected at the rear of the thru-hull.
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Old 29-12-2020, 23:19   #43
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Re: Leaking Ball valve

Hi all who responded to my original question, after reading through all the responses I decided that lifting the boat out and replacing the valve would be less stressful. I purchased a thru hull fitting plus valve, the main thing I was concerned about was the green look of the fittings however the valve unscrewed well while supporting the thru hull. After the job was finished I thought I would share the photos of the valve after a small clean up, as you can see the bronze is in good condition and so was the thru hull "However there was some green corrosion around the handle were it broke". I hope this helps someone who is in the same position and thanks for all the replies there is lots of knowledge out there.
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Old 29-12-2020, 23:22   #44
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Re: Leaking Ball valve

Quote:
Originally Posted by Honeymoon 26 View Post
Hi all who responded to my original question, after reading through all the responses I decided that lifting the boat out and replacing the valve would be less stressful. I purchased a thru hull fitting plus valve, the main thing I was concerned about was the green look of the fittings however the valve unscrewed well while supporting the thru hull. After the job was finished I thought I would share the photos of the valve after a small clean up, as you can see the bronze is in good condition and so was the thru hull "However there was some green corrosion around the handle were it broke". I hope this helps someone who is in the same position and thanks for all the replies there is lots of knowledge out there.
Thanks for the update, out of curiosity did the handle or the ball valve break?
Cheers.
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