Graham -- if you're referring to my check valve, ooops, I wasn't
clear. It's in the stub of the T-fitting, so the line is always
open. Tape over the vent simulating a clog, and even a slight vacuum
unseats it.
I wonder if the slow fill is not that the line can't handle the volume
of air required at typical filling rate, but the fact that with some
fuel in it near the tank whilst refueling means pressure in the tank
has to vent via tiny bubbles. What's relationship of volume of
a bubble to its diameter? Is greater relative surface tension in the
narrow tubing a factor also?
Regards,
Fred F., A063
Graham Singleton wrote:
>
> Two questions in my jumbled mind.
>
> 1 There will be a need for air to flow out of the tank as it all warms up
> on a hot day.
>
> 2 The reason it takes so long to fill Europas is the slow flow of air
> through the vent line. Ours was on the fin too, so it was longer than the
> standard, therefore even slower.
>
> Graham
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