Hayward Water Pressure and Flow Switch | HPX2181 Pool Cover Reels The brand's approach emphasizes compatibility

The brand's approach emphasizes compatibility across a range of skimming and circulation parts

With the Waterco Hydrostar Pump Basket Replacement

Wiring must match voltage and amperage requirements

LaMotte 1766 Tracer Meter Salt TDS pH and Temp

Hach is a trusted name in water analysis with decades of experience serving pool professionals

Hayward Water Pressure and Flow Switch | HPX2181 Pool Cover Reels The brand's approach emphasizes compatibilityWhat This Part Is Used For The Hayward HPX2181 Water Pressure and Flow Switch monitors circulation in compatible Hayward heater systems. It verifies adequate water flow before allowing the heater to fire. Why This Part Matters Low flow conditions can damage the heat exchanger if the heater operates without sufficient circulation. A malfunctioning switch may cause nuisance shutdowns or prevent startup. Replacing a failed switch restores safe operation