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 believe air lifts are commonly used during subsea diving ops to excavate silt from around pipelines and other subsea structures. A pipe or caisson is held vertically close to the excavation area and compressed air injected a couple of feet up from the pipe inlet. The silt travels up the pipe...
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...
