am35martin
Industrial
Thank you for the information. Yes it is a LPG but in the aerosol industry we call it LP (Liquid propellant) I understand how to calulate NPSH and use related tabls and charts. What I can't seem to grasp is the physics behind the pressure cancellations. If I have a tank of A108 and the tank pressure is 108 PSI at 60F how is it that this does not aid in pushing the liquid to the pump. I experimented by filling a 5 gallon tank to 80% capacity with A108 (tank pressure 65 psi) and connected it to a 1000 gallon tank filled with A31 at 15 psi. The 5 Gallon tank was below the inlet of the 100 gallon tank. When I opened the valve, the A108 emptied into the A31 tank. I the liquid head wa sthe only force then the 5 gallon tank should not have emptied in the 1000 gallon tank.
