Originally Posted by whackywoody
Thanks, I assume the vents (stainless) are effectively 1 way valves and will stop water getting in.
No. They need to be able to flow air both ways.
Put them somewhere water either won't get in, or where water will all flow out.Personally I'd put a drain into the bilge in there as well.
Basically, petrol fumes are heavier than air, and any enclosed/sealed space needs a vent or atmospheric pressure and temperature changes will cause you a problem. Hence needing vents at floor level.
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