Pentair Air Bleed Assembly, for 420 CNC Plus | 170028 Waterco Keep the mesh free of

Keep the mesh free of sharp objects or abrasive surfaces to prevent small snags

and built to blend seamlessly with your outdoor space

Physical role: Sits between the wheel hub and drive assembly to preserve a consistent gap that guides motion

Internal plumbing failures can also make backwashing ineffective and lead to recurring debris issues

Pentair Air Bleed Assembly, for 420 CNC Plus | 170028 Waterco Keep the mesh free ofWhat This Part Is Used For The Pentair 170028 Air Bleed Assembly is used on compatible 420 CNC Plus filters to vent trapped air from the tank. It supports safe and consistent system pressurization. Why This Part Matters Air inside the tank can reduce filtration efficiency and cause inaccurate pressure readings. A damaged Assembly may leak under pressure. Replacing the air bleed restores dependable filter operation. Key Features and Specifications