Polaris 3900 Sport / Vac-Sweep 380 / 280 / 180 / 280 TankTrax and TR35P Pressure Cleaner Mechanism for Backup Valve | G53 Caretaker Retro consider checking other pop-up heads

consider checking other pop-up heads and replacing any that show wear

Provides a tight seal on the outer housing to prevent pressure loss

They are designed to keep Caretaker 5-Port Valves sealed even under extreme water pressure

this housing lets you reuse existing turbine

non-carcinogenic

Polaris 3900 Sport / Vac-Sweep 380 / 280 / 180 / 280 TankTrax and TR35P Pressure Cleaner Mechanism for Backup Valve | G53 Caretaker Retro consider checking other pop-up headsPolaris 3900 Sport Vac Sweep 380 280 180 280 TankTrax and "Trade Grade" TR35P Pressure Cleaner Mechanism for Backup Valve The mechanism for the backup valve is replacement parts that are made by Polaris. They used the same high grade materials that were used to make the original factory parts. Making them genuine OEM products The mechanism is the internal parts of the backup valve which was designed to be the feature that backs the pressure side