Hayward Standard CO2 System | AC004 Square Propane Tank Enclosure A damaged or worn bypass

A damaged or worn bypass kit can make a Raypak heater not working problem show up as limit trips

The Hayward AXV621D Universal A-Frame Assembly Kit replaces the A-frame support structure in compatible automatic pool cleaners

It works with the turbine and spindle assembly to drive cleaner movement

Material: High-quality 304 stainless steel construction designed to handle the high thermal output of 48-inch units

Maintains system efficiency by reducing water loss and preserving proper flow

Hayward Standard CO2 System | AC004 Square Propane Tank Enclosure A damaged or worn bypassWhat This Part Is Used For The AC004 standard CO2 system is used to regulate pool pH by injecting carbon dioxide into the return line. It integrates with compatible automation or standalone control systems for chemical management. Why This Part Matters CO2 systems provide controlled pH reduction without handling liquid acid at the equipment pad. Consistent pH control protects heaters, plaster, and salt cells from scaling. Proper operation helps