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Flexible Impellers

by Damon Duke January 26, 2017

Flexible Impellers

Flexible Impeller Pumps

 

Sterndrive engines as well as Inboard motors usually include a raw water pump that uses a flexible impeller. Flexible impeller pumps are common place in sump pumps, bilge pumps, ballast pumps and a ton of other applications. What happens when they fail?

   

 Flexible impeller pumps work best when run regularly, so if your pump has been sitting all winter with the impeller in one position with the blades on one side bent, it may “take a set” and fail upon startup.  The impeller may also stick to the housing and come apart when the pump starts. Impellers are damaged by debris that gets sucked in through the raw water inlet, or by chemicals, and especially by running DRY.

 

It is recommended that you check the impeller’s condition during Spring Commissioning and every 200 hours of operation. Correctly installed impellers might last for several years, but you should stick to a schedule of preventative instead of emergency maintenance. Just the same, an impeller will eventually fail while in operation, and usually at an inconvenient

You should carry a spare onboard, since the impeller is one of the vital components of your engine’s cooling system

 

Choosing the right impeller

 

Replacement Kits carries the impeller kits you need to keep your engine running in peak performance. Check out our website www.replacementkits.com and use the search feature to find the right impeller for you, or shoot us an e-mail and we will be happy to help.




Damon Duke
Damon Duke

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