Head through Hull

[leehadjiosif]

On my new to me 42DS it seems that both sea cock valves were replaced with Marelon (or similar) which work fine. The problem I have is with the actual through hull fitting which has a small leak around the sealant where it exits the hull. Took a close look and don't see any kind of backing plate with threaded pipe and big nut like I'm used to seeing. Can't figure out how the pipe is held in place, (other than the sealant I hope)!! There seems to be a pressed ring or something like it. (see pics). Obviously this is something that would require a haulout...but in the meantime I'm considering below waterline caulking or putting a lot of thickened epoxy to seal everything but I'm not sure if the epoxy would stick to the wet area.
But even If I hauled, I would like to find out how to remove and replace the seacock. The last pic is from the forward head that doesn't leak.


www.23hq.com/LeeH/photo/48055884/original


www.23hq.com/LeeH/photo/48055979/original


www.23hq.com/LeeH/photo/48055898/original

[ohana]

I am not familiar with the skin fitting in your photos, but would agree that seems strange not to have a collar nut of some kind with a largish flange. It looks as if it may have leaked in the past, hence the black sealant which seems to have been applied over the joint. I have to be honest, I dont like the look of this and while a pain, would suggest you lift the boat to have this investigated

[alenka]

Got to agree... This doesn't look right.  The last thing you want is a large hole in your boat below the waterline.  I have heard of some people having through hulls replaced while they are still in the water.  There is an obvious technique if you can find someone who can do it this could save you the cost of the lift.

[vasko]

Same here - haven’r seen before this type , but may be normal and expected...

btw: kind if strange to change only the taps to grp... usually you change everything to grp...

[hoppy]

The seacock valves look like they are tru-design

www.trudesign.nz/marine

As everyone has mentioned, the thruhull is very strange looking. My guess is that they skipped the nut and used the
L bend pipe to secure the thruhull in place. Maybe the skin fitting was cut short to do this. Probably a very bad DIY job.

I think you should look at replacing the skin fittings and thruhulls with Truedesign, sooner rather than later.

[MalcolmP]

Agree with consensus, best to change the skin fitting as soon as you can. I would fit a Trudesign thru hull then fit the valve to that then the bend as required eg www.trudesign.nz/marine/products/3-tail-long-thread-90

I hate seeing an elbow fitted to the thruhulls then the seacock following. To be effective the seacock should always be the first in sequence

[mikebz]

The topic title had me worried until I read the post...

[MartyB]

Depending on which continent you are on, Forespar for NA has the Marlon fittings like true design as noted by some.

Martin

[leehadjiosif]

Oct 29, 2018 10:27:13 GMT mikebz said:

The topic title had me worried until I read the post...

HaHa!!