Hayward Water Pressure and Flow Switch | HPX2181 Pool Cover Reels Routine inspection during filter service

Routine inspection during filter service often reveals housing fatigue

Wiring must match voltage and amperage requirements

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Verify alignment before final tightening

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Hayward Water Pressure and Flow Switch | HPX2181 Pool Cover Reels Routine inspection during filter serviceWhat 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