EDUR centrifugal pumps have been used successfully in refrigeration systems in Europe for decades, but their latest line-up of refrigerant pumps is now available in Australia through pump distributor Hydro Innovations. The new line-up provides maximum safety, reliability and efficiency, with pumps being designed for high loads and extreme temperatures.

EDUR refrigerant pumps are suitable for ecologically harmless refrigerants such as CO2 and ammonia, but also for a multitude of synthetic refrigerants and those containing hydrocarbons. The whole line-up has been designed with magnetic couplings to hermetically seal the refrigerant from the atmosphere. This allows for a spatial separation between motor and pump which avoids any heat transfer into the pumped liquid, benefiting the energy balance of the system.

These very well designed pumps use diffuser devices in circular casings with either open impellers or closed balanced impellers to compensate for radial forces, extending coupling life. They have been designed with very low NPSHr values that enable their use on refrigerants operating close to their boiling point. They are also able to handle a certain level of gas content to cater for some slight evaporation of refrigerants due to the diffuser design.

Hydro Innovations is confident that designers and asset owners will see the benefit of this line of pumps that do not require seals and do not use the pumped fluid to cool the motors. The pulsation free and low noise operation is a feature of these pumps, along with reduced maintenance cost and high operational safety. Pumps are available with flows to 600m3/hr, pressures to 40 bar and temperature ranges from -50OC to 220OC.

EDUR Pumpenfabrik from Kiel in Germany has been manufacturing quality centrifugal pumps since 1927. They are used extensively by OEMs looking to give their customers piece of mind and a product that will last for decades, not just a few years.

Hydro Innovations

More information on these pumps may be obtained from info@hydroinnovations.com.au.