Hayward CX120AA Filter Head with Vent Valve

What This Part Is Used For
The Hayward CX120AA Filter Head with Vent Valve is the top housing assembly for compatible Hayward cartridge filter systems. It includes a vent valve for releasing trapped air during startup.

Why This Part Matters
A cracked or warped filter head can cause leaks and unsafe pressure buildup. Replacing it restores a proper seal and allows controlled air release. This supports safe filter operation and accurate pressure readings.

Key Features and Specifications

• Manufacturer part number CX120AA
• Filter head assembly with vent valve
• For compatible Hayward cartridge filter systems
• Top housing component
• Supports manual air release during startup

Installation and Fitment Guidance
Shut off the pump and relieve filter pressure before removing the head. Inspect the tank O-ring and locking hardware during installation. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward manufactures cartridge filtration systems widely installed in residential pools. Their filter heads and vent assemblies are serviceable components. Pool professionals rely on genuine Hayward parts for proper fit and safe operation.

Common Service Context
Often replaced after freeze damage or cracked housings. Also common during full filter rebuilds.