Hayward Next Gen PP 1/4" Injection Check Valve (CAX-3511) controlsystemparts making this Waterway manifold especially

making this Waterway manifold especially practical for spa

Threaded twin roto smooth-face design in gray and stainless

It is a practical service option when restoring a compatible higher-output heater is more important than adapting the system around a different assembly style

having a matched pack can make service simpler and more predictable

Designed for compatible 336A and 337A heater cabinets

Hayward Next Gen PP 1/4" Injection Check Valve (CAX-3511) controlsystemparts making this Waterway manifold especiallyThe Hayward next generation polypropylene injection check valve is designed for compatible chemical delivery applications where a controlled one way injection point is needed. A check valve is useful because it helps prevent reverse flow while allowing chemical feed in the intended direction, supporting safer and more dependable operation. This replacement is especially useful when the original valve is leaking, sticking, damaged, or no longer