“F5” pressure switches activate a microswitch once a preset pressure value is reached. The preset pressure is set by rotating the internal screw located at the center of the instrument. The internal screw is accessible by removal of the protection plug, clockwise to increase and vice-versa to decrease the value. The nut can be located when the set pressure is reached. Mechanical stops protect both the spring and microswitch from over pressurization. Of compact and economical construction, it is suitable for system not requiring a constant alteration of the operating set, conversely, the possibility to block the protection plug can avoid unwanted or unintentional changes of the same value.

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