This signals you to "backwash" the filter. Simply reverse the water flow and "knock out" the dirt. All Pentair sand filters feature a special internal design that keeps the sand bed level and ensures even water flow. That results in the most efficient filtration possible. Pentair EC-145333 Sand Dollar SD80 Top Mount 26 Pool Sand Filter - Limited.
Pool filter operation doesn't come any easier. The multi-port valve of the Sand Dollar filter puts all filter functions right at your fingertips - just rotate the handle to the desired position and Sand Dollar does the rest for sure and simple operation. The multi-port valve is 1-1/2 plumbed.
Pentair EC-160318 Clean & Clear 200 sq. Pentair EC-160317 Clean & Clear 150 sq. Cartridge Pool Filter - Limited. Right Fit Replacement Above Ground Skimmer Weir Gate for Hayward SP1091 WB734201. RightFit Replacement Filter Cartridge Type B 15 sq ft, 2-Pack WREC025.
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