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vent trapped air
or irrigation lines
corrosion control
Interchangeable Flow Tabs for Marking Ports (English and Spanish Included)
Pentair 520389
Pentair Sight Glass 154566 pool light fuse vent trapped airPentair Sight Glass 154566 2" Sight Glass for the following Pentair Backwash and Diverter Valves: Pentair HiFlow Valves (261049, 261050 and 261142 models) 2" PVC Push Pull Slide Valves (261047 and 261165). Any other backwash, push pull or diverter valve that has a 2" threaded backwash port Note: The Clear sight glass allows you to see when the water when backwashing your sand or D. E. filter to determine if the water is dirty or clear. Seeing the
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