Sixteen homes at different elevations. What is pressure switch setting?

[ggarcia]

I have a new well feeding sixteen homes. The difference in elevation from lowest to highest home is 130 feet, and distance between them is 1700 feet. The well cap is located at the lowest home.  Elevation plus pipe friction from the well cap to highest home adds up to a pressure loss of 107 psi.

I purchased a 2 inch diameter CSV3B2T.  Cary recommends an 86 gallon tank. Both will be located at the well cap.

What should the pressure switch be set at?

Thank you.   

[Cary Austin]

130' is the same as 57 PSI, so 107 PSI at the pump will give you 50 PSI at the highest point.  Just to round things off call it a CSV setting of 110 PSI with a pressure switch setting of 100/120.  All the houses on the lower elevations will need pressure reducing valves, that way everybody from bottom to top gets 50 PSI constant.