Find a Distributor

Rotary Diaphragm

Rotary diaphragm pumps use the Charles Austen patented technology. The flow of liquid is initiated by an eccentrically mounted bearing on a drive shaft revolved within a flexible diaphragm. As the shaft rotates, the bearing flexes the diaphragm, squeezing liquid through the pump. These pumps have outstanding self-priming characteristics and are of a valve-less, seal-less design.

The MaxiBlue is a small yet powerful pump, using the same patented sensing technology as the rest of the range. Designed for high humidity environments, the MaxiBlue only senses when water is present, offering an energy efficient drainage solution for condensate removal. The pump can be mounted in any orientation and is exceptionally quiet with no vibration, making it ideal for installations where low noise levels are key. 

Product Type: Air and water

Max Flow: 3.7 gallons per hour

Max Head: 23 feet

Suction Lift: 16.5 feet

Weight: 1.0 kilograms

Dimensions (LxWxH): 6.2" x 2.28" x 2.65"

Recommended Tubing: 1/4" braided PVC hose


  • Whisper quiet
  • Patented rotary diaphragm technology
  • No maintenance required
  • Positive displacement pump eliminates need for check valve and siphon
  • Tolerates suspended solids
  • Capable of running dry without an overheating failure
  • Plenum rated and UL listed