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DowneastCider
03-27-2013, 08:57 AM
Any instructions floating around for filling a brite under pressure?

I gave it a halfhearted try today and quickly gave up for fear of ruining our pump (Enoitalia Flexible Impeller, Euro-50-FD). The brite was filled with CO2 at about 18 PSI (the plan was to let the CO2 bleed out of the sample tap while we filled, we were not planning to go above the sample tap). We had a hose connected to the bottom of the brite, connected to the pump, connected to another hose going into a tote filled with cider. We turned the pump on, set at 7 out of then. Then we slowly opened the butterfly valve on the bottom of the brite and CO2 immediately started flowing out of the tank and into the tote. We quickly stopped.

Any idea what went wrong? Can I pump not handle filling under pressure? Should we try turning it all the way up? Start out with a lower pressure on the brite?

Thanks

brewmaster 2011
03-27-2013, 09:35 AM
you need to have the pressure in the tote the same as the brite. Since the tote isn't rated for pressure you need to bleed the co2 out of the brite.

DowneastCider
03-27-2013, 09:38 AM
you need to have the pressure in the tote the same as the brite. Since the tote isn't rated for pressure you need to bleed the co2 out of the brite.


So the only way it is possible is if the cider is coming from a vessel which is under pressure?

brewmaster 2011
03-27-2013, 09:47 AM
exactly. you need to have the tote at 18 psi.

dick murton
03-27-2013, 11:05 AM
You haven't said what the CO2 content and the temperature is. 18 psi sounds pretty high to me. You would only need a back pressure in the right tank a smidging above the breakout pressure. So if your cider was at 4 deg C, with a CO2 content of 3 gm / litre (1.5 vol/vol) then the equilibrium pressure is about 2 psi - so for the transsfer not to lose anything, 5 psi should be more than enough.


That means you pump has less work to do. Flexible vane impeller pumps don't generally generate much pressure, so you should check that out as well. In simple terms - source tank head pressure + output pressure of pump must be greater than the top pressure on the bright tank. head pressure due top height of cider in tank is probably not worth considering.