Hayward H-Series Thermostat Kit w/Knob (HAXTST1930) cfrfilters Waterco HydroStar trap lid

Waterco HydroStar trap lid

The 30 PSI rating and slip-by-slip configuration make it a practical fit for supported line layouts that need dependable valve control

Designed for compatible 1-1/2 inch applications

A valve like this is useful because it helps restore the equalizer function within the skimmer system

Hayward H-Series Thermostat Kit w/Knob (HAXTST1930) cfrfilters Waterco HydroStar trap lidTemperature control is central to heater comfort and reliable pool or spa operation. This Hayward H Series thermostat kit with knob replaces worn or failing thermostat components on compatible heater models, helping users adjust and maintain the desired water temperature more confidently. Aging thermostats can lead to inconsistent heating, poor response, or difficulty setting the heater where it needs to be. Installing a proper replacement helps