MTH Regenerative Turbine Pumps
Unlike centrifugal pumps, a regenerative pump has a turbine that forces the fluid through the vanes repeatedly, generating more fluid velocity each time. As a result of this regeneration, regenerative turbine pumps have much greater pressure building capability than centrifugal pumps of similar diameter and speed. Due to close internal clearances, regenerative turbine pumps are used only for clean fluids.
Boiler Feed System Pumps
In a boiler feed system, regenerative turbine pumps supply make-up water to the boiler as the boiler water is turned into steam. Steam boilers operate under pressure, and regenerative turbine pumps meet these requirements:
- develop enough pressure to overcome the boiler pressure as well as losses due to friction
- pump water at temperatures close to boiling (low NPSH requirement)
Coolant System Pumps
Coolant systems often pump cooling fluid through long runs of narrow tubing wrapped around a process chamber or a small tool tip. Regenerative turbine pumps offer good high-pressure characteristics for these applications.
Low NPSH Pumping
MTH pumps are designed with proprietary inlet and pumping techniques for reducing the NPSH required, so they can handle fluids near their vapor pressure (near boiling point). They are suitable for pumping water at or near 212 degrees F, or for fluids like ammonia or Freon that are often stored at their saturation point. Regenerative Turbines have some of the best resistance to cavitation erosion and can often handle vapor in excess of 20% for periods of time.