RV
Mechanical
- Oct 10, 2002
- 23
What are the most recommended pump types for discharging liquid from a liquid knockout tank that is under vacuum? Example, a knockout tank under 27" Hg vacuum, and a pump is desired to operate @ 10 psig discharge pressure while the tank remains under vacuum. Normally I have seen a PD pump such as a progressing cavity pump in this application, but I am wondering if an air-operated diaphragm pump might not work as well, and what else would work? Thanks.