Pentair Admiral S20 Flap Weir, 2" Slip | 84420805 Bastille Slip plate

Slip plate

Service technicians identify it when diagnosing reduced flow or abnormal pump noise

It helps control water movement between the skimmer and connected equipment

This replacement unit sits in the pool's filtration union and catches debris before it reaches the pump

Pentair Rainbow feeders are trusted in residential pool systems

Pentair Admiral S20 Flap Weir, 2" Slip | 84420805 Bastille Slip plateWhat This Part Is Used For Pentair 84420805 Admiral S20 Flap Weir 2in Slip is a replacement flap weir for compatible Pentair Admiral skimmer systems. It helps regulate water entry into the skimmer throat. Why This Part Matters A properly functioning weir improves surface skimming efficiency. Replacing a broken flap restores consistent debris capture. Proper water flow into the skimmer supports overall filtration performance. Key Features and