Hose size for Yanmar sea water pump?

[fredrussell]

I’m fitting a new seal to the sea water pump on my Yanmar 3GM30F. The hose on the inlet side of pump is a very sloppy fit. It’s the usual reinforced clear pipe with a metal spiral (the metal spiral removed from last inch of so to enable hose clamp to constrict pipe).

The hose barbs/spigots(?) are 17mm diameter. In my limited experience hose ID is usually imperial. 1/2” pipe is too small ( l tried some) and the current pipe, which I’m pretty sure is 3/4” is too big. Anyone know if there is an intermediate size, preferably of the spiral reinforced variety?

 

[fredrussell]

Well, a bit of googling has found some “pvc braided clear hose” readily available in 16mm ID. Not anti-kink (no metal spiral). I think I’d rather this than the horrible bodge of a 19mm hose on a 17mm Barb with a hose clip crushing pipe until it seals.

 

[dansaskip]

I would advise you to use silicon rubber hose instead of that - granted it is more expensive but is superior stuff - search for silicone rubber radiator hoses quite a few suppliers out there one such is
Silikonschlauch UK - Großbritanniens führender Einzelhändler für Silikonschläuche

I don't know why the link has come up in German !!!?? It is a Uk company based in Mirfield
Silikonschlauch UK - Großbritanniens führender Einzelhändler für Silikonschläuche

 

[fredrussell]

Thanks for the tip danaskip, will do.

Edit: just had a look and they do wire reinforced silicone hose in 16mm ID. Perfect!

 

[wonkywinch]

I would advise you to use silicon rubber hose instead of that - granted it is more expensive but is superior stuff - search for silicone rubber radiator hoses quite a few suppliers out there one such is
Silikonschlauch UK - Großbritanniens führender Einzelhändler für Silikonschläuche

I don't know why the link has come up in German !!!?? It is a Uk company based in Mirfield
Silikonschlauch UK - Großbritanniens führender Einzelhändler für Silikonschläuche

I posted about this issue two years ago. Probably to do with where the site is hosted.

In any case, you can always go back and edit your post to force the hyperlink to display what you wish -

Hosenpumpen in der English Language hyperlinkenstrasse

My original post:

https://forums.ybw.com/threads/why-does-this-forum-always-parse-facebook-links-in-german.606853/

 

[vyv_cox]

Not sure why you would want silicone rubber hose on a seawater pump inlet. I had wire reinforced pvc hose on mine for at least 20 years without a problem. I find that using clear hose in this duty can be useful.

 

[fredrussell]

Not sure why you would want silicone rubber hose on a seawater pump inlet. I had wire reinforced pvc hose on mine for at least 20 years without a problem. I find that using clear hose in this duty can be useful.

The problem I’m having is finding a 5/8” or 17mm-ish wire reinforced pvc hose, as per my OP. I’m sure they exist, just hard to find.