Hayward CZ/HM/HM2 Thermostat w/o Knob (CHXTST1930) horizonventures or no longer directing flow

or no longer directing flow as expected

The 2-pack format is ideal when you want added flexibility beyond a single bottle

and replacing the correct version helps preserve the original movement and fit inside the skimmer body

This OEM trap pump basket is a practical replacement for compatible 6 inch trap pump systems that need renewed debris-catching support during everyday operation

and this Praher Plastics version is the SM-10-2 model with a 1-1/2 inch female pipe thread connection using the SM-10-2 reference

Hayward CZ/HM/HM2 Thermostat w/o Knob (CHXTST1930) horizonventures or no longer directing flowThis thermostat is used on compatible Hayward CZ, HM, and HM2 heater systems where temperature regulation hardware needs replacement but the control knob is not required. It is a practical service part for restoring proper heater response when the existing thermostat is worn, inconsistent, or no longer controlling the system correctly. For pool and spa heaters, small control components can make a noticeable difference in comfort and reliability.