I got CO2 tank for free and it says "200-300 psi" on it. Is it posible to use this lower pressure to drive CO2 system? When I should expect the "dump" effect in such lower pressure system? Would it be posible to use tank at, let's say, 50 psi and use all of the CO2 until empty? (That is the pressure inside the tank right now). Thank you, Davorin