Water pump pressure switch 1.0-16.0bar with compact shell, four-way base allows for easier installation of exhaust valves and pressure gauges. Come with relief valve to avoid overload. Apply in hydropower, tap water, petroleum.
Tips: How to connect water pump pressure switch?
Generally, there are 4 terminals, and there are two connection methods:
If the pressure switch has four wires, it is generally a pair of normally open points and a pair of normally closed points. It can only start the pump and keep pumping, indicating that the pressure switch has no action. Theoretically, it is because the action value is set too high and needs to be adjusted. Low. In addition, if the pipeline is not closed, the pressure cannot go up. To test its action, all valves must be closed.