1, 25mm or 50mm diameter can be driven, and there are no specific requirements for parameters such as flow and lift, but according to the standard, 3KW is a gear pump that drives 40mm diameter.
2. Under low pressure, the flow rate can reach 30 and the pressure can reach 50. It is suggested to choose PVR 13 1. If the medium pressure is 100, the flow can be 15, and the gear pump can be HGP- 14.