Increased performance through suitable impellersPropellers with a housing around them are called impellers in boatbuilding and turbines in aircraft construction. What they have in common is an increase in power by reducing resistance from the outside to the inside. For example, in bilge and bilge pumps or in cooling water pumps and boat engines are located these propellers, so technically impellers. They are usually interlocked with the housings from the inside and are made of the material nitrile.

Nitrile is even more resistant in this function than neoprene. Nevertheless, the impellers should be replaced after one year and it is recommended to have spare impellers in the emergency kit.

For products from Volvo Penta or Johnsson as a manufacturer example, you should have the exact product name with you when buying a replacement impeller, as there are very different sizes. To replace an impeller, it is a good idea to have the accessories of a puller tool to make it easier for you to change the impeller.