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You are working with dangerous chemicals and high pressures and dont appear to have addressed all the important issues. I highly recommend that you hire a consultant with experience in RO plant design & construction to design the pump and injection system for you, otherwise OSHA may be writing...

Stick with Prominent or Pulsafeeder positive displacement pumps. Hose pumps are made for the pharmaceutical industry- they are designed for higher accuracy but with delivery in batches. They are NOT made for continuous service. Once the hoses wear, the pump rate fluctuates and you will...

You could buy WATERCAD software and run it, but this is quite simple. If large enough, yoor new force main would not cause the TDH to fluctuate more than 5' either side of the 93' design. Make two pressure curves, one with all three pumps running and one with only one (the one closest to the...

At least a grand per foot oughta cover you, plus contingency for failure and the subsequent lawsuits. Why not go around the lake? Why not use ductile iron ball & socket pipe? Can the pipe be damaged by ice or vessels? You can weld iron under water, but it is kinda hard to make those thermal...

Assuming you mean liquid hypochlorite, I would contact Odyssey, manufacturer of the bleach. They can direct you to a fabricator to design and specify the pumps and storage facility. Contact your State agemcy regarding permit criteria.

It is simply a port in the discharge line that blows off into the storage pit you are pumping out of to re-suspend the solids, ask you pump supplier, Flygt has a discharge head for their submersibles