motor 2 pole vs 4 pole

The Performance and Efficiency. twice private life ep 2 eng sub If the flow rate is small (under 4L/S) and the pressure is relatively high (greater than 150 kPa) it is most likely that a 2 pole motor-driven pump selection will offer superior performance and efficiency compared to 4 pole. death race 4 This situation quite often applies to heating water applications where flows are low