The actuating element in the tecno valve is not a solenoid system, as in conventional proportional pressure regulating valves, but a piezo valve – an encapsulated Piezo-ceramic element based on the jet-and-baffle principle.

The piezo valve makes use of the Piezo effect: the Piezo-ceramic element bends when a voltage is applied to it.

A built-in electronic control system applies variable voltage to the element, producing variable bending and therefore variable pressure on the diaphragm in the pilot chamber. Diaphragm movement is transfe-rred to the main valve by a plunger acting against a spring.

The pressure thus produced at the valve outlet is compared via a sensor with the preset value and if necessary corrected by the electronic control system.

Technical Data:

• Operating pressure range: 0-8 bar
                                      0-200 mbar
• Medium: air, inert gas
• Control type: 2-wire 4-20mA
                        3-wire 0-10V
• Power consumption: 0.25 W max.
• Response sensitivity: <0.1%
• Nominal flow rate: 130 l/min
• Limiting frequency: 42 Hz
• Size: 73x44x36 mm

Benefits:

• Smallest and lightest
• Simple installation
• Fast and accurate using Piezo technology
• Long life, virtually no wear
• Lowest power consumption
• Two-wire operation (4 to 20mA) without additional power supply
• Rapid pressurization and exhaust
• Adaptable to customer requirements