Suicide hose & catch can

[mudski]

I've also found a hose that reduces internal size along the length . Designed for provent 25mm applications. So just cut where the hose diameter suits and you're set. A bit pricey though.

https://rover.ebay.com/rover/0/0/0?m...2F252254170757



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They are pricey because its oil resistant silicone. Well thye say it is so hopefully they are selling you oil resistant silicone. Normal silicone will deteriorate faster than rubber when it see's oil. I silicone at work, so I see this all the time.
Those hose clamps in the pic above Eric too will chew out the silicone hose, lined clamps is what should be used....
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i used these for reducers...
copper-fitting-reducer-500x500.jpg