Hayward CAX-3511 Injection Check Valve - 1/4in

What This Part Is Used For
The CAX-3511 injection check valve - 1/4in is used in chemical feed systems to prevent backflow into injection tubing. It allows chemical to flow in one direction toward the return line.

Why This Part Matters
A failed check valve can allow pool water to enter feed lines and damage pumps. Replacing it maintains proper dosing and protects chemical equipment. Reliable one-way flow prevents contamination and system corrosion.

Key Features and Specifications

• Manufacturer part number CAX-3511
• Injection check valve
• 1/4in size
• One-way flow design
• For compatible chemical feed systems

Installation and Fitment Guidance
Install in line with correct flow direction toward the pool return. Inspect tubing for wear before reconnection. Confirm by manufacturer part number before ordering.

About the Hayward Brand
Hayward chemical control systems integrate pumps, sensors, and injection components. Proper check valves protect feed equipment and plumbing. Genuine parts maintain safe chemical dosing.

Common Service Context
Replaced during chemical pump maintenance. Often addressed when feed lines show signs of backflow.