AquaStar ChemStar CH100/CH200 3" Cap (CH1004) chemicalfeeders A spa control system is

A spa control system is what makes all the major components feel like one coordinated experience

A focused replacement like this is especially useful when the surrounding valve parts remain serviceable and the weakness is isolated to the cover itself

This Waterway internal is a practical replacement when both function and appearance need to be refreshed together

Waterway union tailpiece

Matching the correct revision and keypad format helps preserve intended compatibility and system behavior

AquaStar ChemStar CH100/CH200 3" Cap (CH1004) chemicalfeeders A spa control system isThe AquaStar ChemStar 3 inch cap is designed for compatible CH100 and CH200 feeder applications where a properly fitting cap is needed to close and service the main assembly. Caps like this are useful because they help complete the feeder body and support safe, reliable access to the interior when needed. This replacement is especially useful when the original cap is cracked, warped, difficult to secure, or no longer sealing the way it should. Because