Pressure switch piston

A pressure switch arrangement comprising:

• a pressure switch body defining a chamber, the pressure switch body also having a fitting end defining a conduit leading to the chamber;
• a switching component disposed within the chamber of the pressure switch body, the switching component including a trigger;
• an actuation unit disposed within the chamber and being movable relative to the switching component, the actuation unit extending along a length between a first end and a second end, the first end facing the fitting end and the second end facing the trigger, the actuation unit including a limiter disposed at an intermediate position between the first end and the second end, the actuation unit also defining a spring stop region disposed between the limiter and the second end;
• an insert disposed within the chamber of the pressure switch body, the insert defining an aperture through which the actuation unit extends so that at least a portion of the insert is disposed between the limiter and the spring stop region of the actuation unit, the insert cooperating with the pressure switch body to define a pocket into which the limiter radially extends, the limiter being movable within the pocket as the actuation unit moves within the chamber;
• and
• a spring arrangement engaging the spring stop region of the actuation unit, the spring arrangement biasing the actuation unit away from the trigger of the switching component.