PRK adjustable pressure switches

are normally used for control and automatic reset of hydraulic circuit pressure. They are available with different operating ranges up to 400 bar. They comprise an anodised aluminium body and steel internal piston.

The tripping value is set as required by turning the knob with dial. The pressure switches cut out the system when the required pressure is reached. Mechanical stops protect both the spring and the microswitch against overpressures.