F3 adjustable pressure switches activate a micro-switch once a preset pressure value is reached.

The pressure is set by rotating the external screw located at the center of the instrument clockwise to increase and counter-clockwise to decrease the value. Mechanical stops protect both the spring and the micro-switch from over pressurization.

Technical Features:
Body in plated carbon steel with a ¼" BSP male threaded connection.

Installation: it can be mounted in any position.

Working temperature: from -20°C to + 80°C

Switching frequency: 120 cycles/min.

Switching accuracy: within 3 % of set pressure

Fixed hysteresis value:

Diaphragm type: about 10% of set value

Piston type: about 15% of set value

Weight: 80 gr.

Electric Features:
Electrical connection: fast-on 6,3mm

Electrical protection according to

DIN 40050: IP54

Maximum contact load:

Alternating current up to 250 Volts- 5 Amp

Direct current up to 250 Volts – 0.25 Amp

-Viton seals
-PTFE seals
-Gold plated contacts instead of the silver plated currently used.

We reserve the right to make construction modifications without prior notice.