Polaris Zodiac 180/280/380/3900 Backup Valve Mechanism (G53) energysaver A tank body O-ring helps

A tank body O-ring helps create a seal at a compatible DE filter tank connection

Twin roto smooth stainless steel and black threaded S03 design

When multiple pieces of a jet have started aging together

or is aging out of service

Polaris Zodiac 180/280/380/3900 Backup Valve Mechanism (G53) energysaver A tank body O-ring helpsThe Polaris Zodiac Backup Valve Mechanism [180 280 380 3900] (G53) is a replacement backup valve mechanism for compatible Polaris and Zodiac pressure side pool cleaner systems. This component restores the internal movement that helps the backup valve cycle properly, helping the cleaner maintain reliable movement throughout the pool. A failing backup valve or related backup valve part can cause the cleaner to stall, stay in one area, or lose the