seacock corrosion

[chaves188]

I need some advice with the holding tank seacock, it has some corrosion. Is the boat at danger? is urgent?
I can see a little yellow / green leaking. Not water, but some sticky liquid.

 

[dlochner]

When is the next haul out?

The problem with the corrosion is only one problem. The bigger concern is the through hull, it is quite vulnerable to breaking off. The seacock should have flanged base that is secured to the hull. Like the one below from Groco. It would be quite easy to break or crack the through hull fitting especially if it is compromised with any kind of corrosion.

Flanged Seacock | GROCO

GROCO Bronze Flange Seacock is highest quality valve on the market. Period. Completely field serviceable. Solid stainless ball.

www.groco.net

 

[chaves188]

When is the next haul out?

The problem with the corrosion is only one problem. The bigger concern is the through hull, it is quite vulnerable to breaking off. The seacock should have flanged base that is secured to the hull. Like the one below from Groco. It would be quite easy to break or crack the through hull fitting especially if it is compromised with any kind of corrosion.

Flanged Seacock | GROCO

GROCO Bronze Flange Seacock is highest quality valve on the market. Period. Completely field serviceable. Solid stainless ball.

www.groco.net

thank you for the answer
It is scheduled for January or February.

 

[Don S/V ILLusion]

Your pictures likely resemble the seacocks in half of all boats in any marina. Not the best design but imminent disaster isn’t a big concern. Replace when practicable.

 

[dlochner]

thank you for the answer
It is scheduled for January or February.

That would be a good time to replace them. In the meantime, treat them gently.

 

[jssailem]

Dave's statements above are of great help.

The issue is, most times you do may not see all of the problem.
Here are pictures of my valve. I had a bad feeling. The boat is mature. No history as to how old the through hull was. It functioned without strain. I just felt the need to replace it.

One week before I scheduled the haul out and replacement work.

This happened when I started to remove the through hull

It broke apart in my hand. Galvanic Corrosion on the inside of the valve.

 

[Tom J]

Not for nothing, but the hose on that valve is a sanitation hose, and the valve is open. If the boat is on the water, that is a hefty fine in most places. If not, eww!