Welcome to our Technical Frequently Asked Questions page. Here you will find answers to a few technical questions that are often asked. If you have any questions that do not appear on this page then please do not hesitate to contact us. If you would like to suggest other questions that you would like to be included  on this page, please email us by clicking on the following address: sales@castlepumps.com. Please view our disclaimer or contact us before relying on this information.

1. Pump - Principal Definitions
    - Flow Rate
    - Head
    - Power
    - Efficiency
    - Speed
    - NPSH

2. Characteristics Curve

3. Special Pipes & Pieces

4. Electric Motors
    - Rated Power & Current
    - Rated Voltage & Frequency
    - Power Factor
    - Speed
    - Type of Duty
    - Insulation class
    - Degree of Protection

5. How a float switch works

6. Difference between packed glands and mechanical seals

7. Sealing options for water pumps

8. Submersible Troubleshooting Guide