The Doyin 4SDM3/22 is a 2.0HP (1.5kW) 4-inch AC borehole submersible pump designed for high-volume, deep-well water supply. Featuring a stainless steel body and 22 stages of ordinary impellers, it offers a maximum flow rate of
(4800L/h) and a maximum head of 158 meters, making it ideal for residential, agricultural, and industrial use.