looking for the correct CSV for my system

[KBI]

This is the main pumping station for a large container nursery with overhead irrigation. my current system is running 3 7.5 hp single phase pumps. we currently have to run one pump nonstop during operation to maintain a even pressure otherwise the pumps will switch on and off nonstop and burn up. I am interested in installing csvs and a pressure tank. Any other advice you can give me would be grate.     

[Cary Austin]

This is an easy one.  I would replace all those swing checks with spring loaded ones.  Then cut out the tee with the pressure switches sticking up, and place a 2” CSV in that spot.  Come off the main manifold, like where the ball valve sticks out to the left, to attach an 80 gallon size bladder tank.  Mount all three pressure switches on a tee as close to the pressure tank as possible.  Stagger the pressure settings 5 or 10 PSI apart, and let it run.

Example pressure setting;

Pump #1
On at 60
Off at 70
CSV at 60

Pump #2
On at 50
Off at 60
CSV at 50

Pump #3
On at 40
Off at 50
CSV at 40

Something like this   http://cyclestopvalves.com/smf/index.php?topic=111.0