Polaris Vac-Sweep 280 TankTrax Idler Wheel | K27 Check Valves It helps ensure a tight

It helps ensure a tight

Venturi design draws extra water via pinholes for enhanced cleaning reach

This part is blue and has an opening to one side that allows dirt and debris to enter up through the cleaner and out the hose

Pairing with nearby Gamma Series 2 Venturi heads can improve overall system balance

Polaris Vac-Sweep 280 TankTrax Idler Wheel | K27 Check Valves It helps ensure a tightPolaris Vac Sweep 280 TankTrax Idler Wheel (K27) The idler wheel is a replacement part made by Polaris. Making this a genuine OEM product. This wheel plays an important role in the cleaners ability to maneuver around the surface of your pool. It does this by transmitting rotation from one side of the drive shaft to another, in applications where it is undesirable to connect them directly. An example of this would be the crankshaft to camshaft gear