Pentair G4V Venturi Complete Pop Up Head Euro Blue | 221005 pentair variable speed pump This way the engine assembly

This way the engine assembly can work hard pulling and sucking up dirt and debris off the pool surface and up and through the center of the cleaner

there are 3 of these parts

Valve Failure

5 brilliant

Works with these Hayward pressure cleaners:

Pentair G4V Venturi Complete Pop Up Head Euro Blue | 221005 pentair variable speed pump This way the engine assemblyPentair G4V Venturi Complete Pop Up Head Euro Blue 221005 Pentair G4V Venturi Pop Up Head 221005 provides durable, efficient water circulation and debris removal for A&A in floor pool cleaning systems. Features Venturi design optimizes water flow for superior cleaning. Compatible with all Pentair A&A in floor cleaning systems. Euro Blue finish enhances pool aesthetics. Provides 360 water circulation for even debris removal. Chemical resistant