Is your water pump standard or reverse rotation? This video describes how to tell by looking at the impeller, shows different impeller designs with how to identify the rotation direction, and demonstrates what happens when an impeller spins backwards.

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All music courtesy of Fesliyan Studios (www.fesliyanstudios.com)

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Chapters:
00:00 Introduction
00:52 Longterm damage running backwards
01:58 Impeller design
05:23 Quick pump overview
08:08 Various impeller designs
09:27 Demonstration
10:15 Symptoms
12:40 Ending