RE: End-of-tank-dump comment -- or - Writing Checks for Checkvalves

[Ron Barter <mistnfrost at superaje_com>]

Hi Kevin,

    I'll take a stab as to how the airline between your solenoid and check
valve is getting sucked flat...

    A lot of solenoids generate a considerable amount of heat when they are
operating, or open. It would stand to reason that this would heat the CO2
travelling through them. When the power is cut, the valve closes, and the
CO2 ceases to be heated. As the CO2 trapped between the closed solenoid and
the closed check valve cools, it shrinks in volume, sucking the flexible
silicone hose flat in the process.

    This is just a guess, but I can't think of how else it could be
happening.

Best regards,

Ron Barter
Perth, Ontario

----------------------
 
> By the way - I added check valve #2 because without it the water being
> "sucked" back down towards the cylinder also sucks water back from the
> reactor into the bubble counter which eventually results in the bubble
> counter becoming full with water (the water enters through the "outlet" &,
> of course, when the CO2 flow reverses it can't get back out again).
> 
> Does anyone else on the list know whether CO2 being absorbed into water
> would provide enough vacuum to compress a silicone airline flat?
> 
> Kevin