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Old 30-06-2021, 00:06   #31
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Re: What do you think of my thru hull condition?

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You simply order them, they ship worldwide
No thank you. some **** like EU bronze valve and seacock. I think this new bronze production has a problem with using recycled copper. For now trudesign seacock and valve is so better alternative.
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Old 30-06-2021, 10:15   #32
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Re: What do you think of my thru hull condition?

Haul it out ASAP and replace with proper thruhulls.
It's not worth risking your life and your boat on corroded improper equipment.
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Old 30-06-2021, 10:18   #33
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Re: What do you think of my thru hull condition?

Plug the skin Fitting from the outside
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Old 30-06-2021, 10:31   #34
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Re: What do you think of my thru hull condition?

If it has lasted this long , it will last another 6 months. Just keep an eye on it and I would not touch it with a wire brush or anything else.
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Old 30-06-2021, 10:51   #35
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Re: What do you think of my thru hull condition?

What you have are in-line valves. If it were my boat I would replace any in-line valve below the waterline with a flanged bronze seacock with a backing plate. In the pictures from another reply you can see how prone an in-line valve is to side stress and breaking. And on top of that you have visible rust and corrosion in multiple places like the threads, handles, nut.

There's already enough that can go wrong with sailboats. This is an obvious one. Be proactive and eliminate these sources of potential sinking. You will sleep better and worry less.
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Old 30-06-2021, 10:53   #36
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Re: What do you think of my thru hull condition?

The first rule of boat maintenance is: "When in doubt, fix it. And fix it right" Remember, 'you bet your boat'.
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Old 30-06-2021, 11:24   #37
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Talking Re: What do you think of my thru hull condition?

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Are Groco have product with ISO 7 and ISO 228 British Standard Pipe thread

In EU rare anybody use Groco valve,very hard to find.
Why would you specify British Standard pipe thread? Those are so hard to find! Standard NPT is what you want on the inboard end of the seacock and NPS on the thruhull facing side!
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Old 30-06-2021, 11:26   #38
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Re: What do you think of my thru hull condition?

seems I've seen these type of questions before... no through hulls... no holes
but... since most of us had 'em replace every time you repaint- cheap insurance
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Old 30-06-2021, 12:10   #39
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Re: What do you think of my thru hull condition?

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Why would you specify British Standard pipe thread? Those are so hard to find! Standard NPT is what you want on the inboard end of the seacock and NPS on the thruhull facing side!
Maybe in the USA. British Standard Pipe (BSP) is a set of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings by mating an external (male) thread with an internal (female) thread. It has been adopted as standard in plumbing and pipe fitting, except only in North America, where NPT and related threads are used.
Except in PVC,AL,copper ,SS Pipe where EU and world use Metric Pipe Sizes Dn "Diametre Nominel" (except USA and some africa country use NPT) But i think next 5-10 year also BSP go in history
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Old 30-06-2021, 12:14   #40
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Re: What do you think of my thru hull condition?

Thanks for all the replies here, its very helpful to get so many opinions so quickly. I'll get onto a plan to get them changed ASAP.
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Old 30-06-2021, 13:28   #41
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Re: What do you think of my thru hull condition?

Here is a pic of mine. All were done last summer. Looks like perhaps yours may have been done by the owner who was not aware of the standard to bolt through. Might put question on some of the other things they touched.
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Old 30-06-2021, 15:07   #42
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Re: What do you think of my thru hull condition?

If the thruhull fitting is OK then you could probably just replace the nipple and maybe the valve. Should be easy to obtain a bronze nipple. Easy to replace by putting either a wood plug from the outside (better) or even a plastic bag. Not going to get that much water in the boat.



I would also go back to the surveyor and "suggest" that he might want to pay for it since it is a pretty big no-no for iron/galvanized pipe there.
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Old 30-06-2021, 16:28   #43
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Re: What do you think of my thru hull condition?

What do you think of my thru hull condition? Not very good, definately needs attention sooner rather than later, but be aware that most of the world uses the same components and have been doing so for a very long time. Only in north america is the mantra of bolt in seacocks sung so consistantly and loudly.
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Old 30-06-2021, 17:20   #44
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Re: What do you think of my thru hull condition?

With all due respect to Rod Collins and Groco.
You don't need to go to that much work and expense. Yes the bronze is strong and done properly is a lot stronger than the hull.

Go with Trudesign.
The composite thru hull epoxied into the hull is as strong as the hull itself.
They will never corrode.
They need no maintenance.
They will never stick.
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Old 30-06-2021, 18:14   #45
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Re: What do you think of my thru hull condition?

The purpose of having the valve as part of the thru hull fitting is that the valve can close the hole if the nipple fails. If the nipple is between the hull fitting and the valve and the nipple fails, pounding a plug into the hole is the only way to stop the water flow.

Additionally, it is virtually impossible to shear a valve to thru hull fitting off whereas a thru hull to nipple to valve is not particularly strong, especially with corrosion present. Comments on this forum about how hard it can be to open and close these valves describe how much force sometimes is applied to these valves/nipples.

Above the waterline almost anything will work. Below the waterline is a more serious situation.
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