Minimum requirement is 5 HP high head pumpset ( giving 30 to 35 meters head ) if water is very near to ground level. High head pumpset will have modified Pump impeller and have lower inlet / Delivery size e.g 2 x 2 or 2.5 × 2.
Pump H.P requirement can get increased to 7.5 HP or 10Hp depending on the depth of water in the well from ground level, the distance from well to the end of Farm area, and the Raingun model one wishes to use.
Instead of changing the existing low head pumpset in well , you can also add another 3 or 5 HP pumpset on ground level at the outlet pipeline of first Pump to use as Booster Pump.
