The The Polaris 9-100-1200 Complete In-Line Back-Up Valve Kit for the Polaris 360 Pressure Side Cleaner comes ready for installation. The Polaris 9-100-1200 Back-Up Valve for the Polaris 360 opens every 3 minutes for 30 seconds to pull the cleaner back changing its cleaning direction. This valve is also able to pull the Polaris 360 out of tight places if it gets stuck.You can test if your cleaner is having issues by watching to see if it is following this same pattern.
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