Thru hull

[Oceanis 440 NY]

Hello Mates,

Quite the week, had the thru hull for the dripless fail. Luckily, no damage and was able to haul out quickly. Now I need to replace the thru-hull (with clamshell) on my '96 440. I beleive it is metric, slighlty larger than 1/2", does anyone know where to source metric thru hulls in the US? Alternatively, would replacing with a 1/2" thru hull pose any concerns? The current clamshell looks a bit different from the Groco, any help is appreciated.

Thank you,

Jon Schultz

S/V Ramble On

[Mark J Wilme]

Honesty I would install a bronze 1/2"

https://www.fisheriessupply.com/buck-algonquin-thru-hull-connections/00th100

Just what I would do

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[Jon Schultz]

Thanks Mark,

I was finally able to reset my pw to the spare parts site, it does appear to be a 1/2". Off to West Marine as I need it by tomorrow. 

Jon

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[DAVID FLETCHER]

You need an engine scoop mounted backwards. 

A typical thru hull would not scoop up water. 

This is not an outlet. 

Sent from my iPhone

On Jun 14, 2025, at 4:49 PM, Jon Schultz <jsch...@gmail.com> wrote:



Thanks Mark,

I was finally able to reset my pw to the spare parts site, it does appear to be a 1/2". Off to West Marine as I need it by tomorrow. 

<image.png>

<image.png>

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Jon

To view this discussion visit https://groups.google.com/d/msgid/beneteau-owners/CA%2BVAQE-RwwvLjq6iEsDqVShJzK56wu_U3MtQgjk9A83MiajovQ%40mail.gmail.com.

[DAVID FLETCHER]

If yours is original it will have BSPP threads. 

Sent from my iPhone

On Jun 14, 2025, at 4:49 PM, Jon Schultz <jsch...@gmail.com> wrote:



Thanks Mark,

I was finally able to reset my pw to the spare parts site, it does appear to be a 1/2". Off to West Marine as I need it by tomorrow. 

<image.png>

<image.png>

<image.png>

Jon

To view this discussion visit https://groups.google.com/d/msgid/beneteau-owners/CA%2BVAQE-RwwvLjq6iEsDqVShJzK56wu_U3MtQgjk9A83MiajovQ%40mail.gmail.com.

[Jon Schultz]

Thanks Fletch, Yes the thru-hull with clamshell vent/Scoop. I am replacing the all of the ball valves and connections with bronze fittings. 

To view this discussion visit https://groups.google.com/d/msgid/beneteau-owners/68018169-1D9E-4258-86F8-08CFAC109730%40rogers.com.

[DAVID FLETCHER]

✔️

Sent from my iPhone

On Jun 14, 2025, at 5:11 PM, Jon Schultz <jsch...@gmail.com> wrote:



To view this discussion visit https://groups.google.com/d/msgid/beneteau-owners/CA%2BVAQE-Nx0sydhuL52H2LSxH9_9v3GV%2BwfYd8h8G_AhUBY6iaA%40mail.gmail.com.

[Mark J Wilme]

TIL

To view this discussion visit https://groups.google.com/d/msgid/beneteau-owners/6F646C0A-2831-4B48-95CD-22F6B5EB6579%40rogers.com.

[Oceanis 440 NY]

Turns out it was a 1/2" thru hull. The opening has threaded bronze. Once I removed the one screw it had into the hull I was able to unscrew the old thru hull and prep it for the new one. No damage and it looks almost brand new.