Im looking at building a diesel driven hydraulic power pack using a variable displacement swash plate type piston pump. Whats the difference between an open loop and closed loop unit.
I am looking for a submersible pump for use in a hazardous area (oil and gas). It needs to fit down a 12" caisson and pump oily water to a head of 150m. The idea is to empty the caisson for inspection. An air driven centrifugal submersible would be ideal but I dont know if one exists for...
