Using the patented pumping technology of the RD5 rotary diaphragm pump, Charles Austen Pumps is extending the range to include the RD1, a new smaller, low-cost version.

Inside the pump, the active part is a novel composite reinforced rubber moulding. This moulded rotary diaphragm deals with all the sealing and pumping functions in one go, much as the tube in the peristaltic pump does, but without the inconvenience of servicing and replacing worn tube.

Through the orbiting action of the diaphragm, the RD1 achieves a remarkable lift of 7m, together with the ability to pump air and water up 20m. This innovative design means the liquid comes into contact with only two parts, namely the diaphragm and the pump body, which are available in food grade material and are capable of pumping hot liquids up to 98¢ªC, making it suitable for beverage dispense and sterilisation.

Lightweight components, slimline design and the ability to orientate the pump connectors have been incorporated to minimise weight and save space. Offering over 3000 hours of service, the RD1 has no sliding parts, so wear and maintenance are kept to a minimum. The RD1 is self-priming and is able to tolerate suspended solids and run dry without damage.

Proving excellent as a dosing pump, the RD1 accurately pumps the same volume of liquid each revolution. A Hall Effect sensor is used to sense the number of revolutions the pump makes when it is running. Using a combined revolution counter and controller, the pump can be set to run for a predetermined number of revolutions. This allows the operator to accurately dose specific volumes of liquid, time and again. Additionally, simply by switching the polarity of the DC input voltage, the user can reverse the direction of flow.

Potential applications include water sampling, vending, hydroponics, industrial cleaning machines, condensate removal and the dosing of liquids for purification. 

For more information, visit www.charlesausten.com