craftsman air compressor pressure switch

We rely on pressure switches to act as our safety net, protecting pressure vessels such as air compressors from destruction. This device works tirelessly, keeping watch on the pressure levels of the vessel and, when it reaches a predetermined point, switching off the power and thus preventing it from exploding.

Along the compressor’s discharge path there is a pressure switch that is generally located in the region of highest pressure. To make this switch operational, two connections are necessary, one for supplying the compressor with energy and the other to link up with the pressure gauge.

When the internal pressure in a vessel rises to a certain level, a moveable diaphragm connected to a pressure switch is triggered, ultimately cutting the power to the compressor. This diaphragm is exquisitely sensitive to pressure, adequately responding to its change in order to ensure proper system functioning.

An integral component of pressure vessel systems, the pressure switch is instrumental for the safety of the system. It is beneficial to understand the manner in which the pressure switch functions as well as how to identify and resolve any operational complications.

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