Selection Guidelines

Direct Current Models
Based upon the flow and pressure requirements identify a motor and pump combination that will deliver the required performance. Attention should be paid to the duty ratings as well as the current draw to ensure it falls within acceptable levels.

Alternating Current Models
Based upon the flow and pressure requirements select a pump that is capable of providing the necessary flow and pressure. It is generally recommended that the 3450 RPM motors are used. Once the pump has been identified it will be necessary to calculate the required HP to drive the pump. Refer to the “Common Calculations and Conversion factors” area.

Selecting Control Valves
The final step in constructing the pump motor combination is to determine the valve combination that will be required. In the simplest form the unit is supplied without any additional valves. Optional components such as relief valves, check valves, flow controls can be integrated into the unit if required. For applications that are not listed in this catalog please contact an HPI representative.