Hayward Injection Check Valve, 1/4" | CAX-3511 Water Tech industry-relevant products backed by decades

industry-relevant products backed by decades of experience in keeping pools clean and efficient

Hayward manufactures automatic pool cleaners with replaceable wear components

Flow-related error conditions

and diagnostic information

Precision burners for even heat distribution

Hayward Injection Check Valve, 1/4" | CAX-3511 Water Tech industry-relevant products backed by decadesWhat 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