AquaFX High-Pressure Switch
High-Pressure Cut-Off Switch for Booster Pump Assembly.
This switch is what notices the built-up pressure in the product line and brakes the circuit to the pump or other application.
The preset pressure sensitivity works well for most installations. If you find that the booster pump does not shut off after your auto-shut-off valve has activated or your float has reached the top level, it may be necessary to adjust the sensitivity by adjusting the small screw on the switch.