What is the most common type of feed water pump?

The most common type of feed water pump is the multi-stage diffuser pump. This type of pump is designed to handle high-pressure applications, which is essential when feeding water into a boiler or other systems that require consistent and reliable pressure. The multi-stage construction allows for multiple impellers to be used in series, which significantly increases the pressure that can be generated by the pump.

This feature makes multi-stage diffuser pumps particularly effective for transferring water in high-head applications, such as those commonly found in steam and power generation. The efficiency and ability to handle large volumes of water with the necessary pressure are critical factors in their widespread use in industrial settings.

Other pump types may have specific applications or advantages, but they do not generally offer the same combination of high pressure and volume that multi-stage diffuser pumps provide for feed water service.