Dedicated catalogues Proportional technology

Flow control
PIEZOTRONIC
The PIEZOTRONIC valve with proportional control is a high-tech solution designed in particular for those applications with an extremely low power consumption. It is suited for use with battery-operated equipment or in potentially explosive areas. Due to its long service life of 1 billion cycles it is also integrated in measuring systems such as medical equipment and gas analysers. It can even be powered by solar cells. Moreover, the PIEZOTRONIC valve is particularly suited for portable equipment because of its low weight.
Low current consumption

Piezoelectric effect

The piezoelectric element consists of at least two layers. When energised, one layer contracts and the other expands resulting in a bending effect (also known from thermo-bimetals).
A mechanical deformation occurs under an electrical charge. The multi-layer piezoelectric element is the essential part of a piezoelectric valve. It consists of elementary dipoles which are polarised during manufacture. The length of the material changes as soon as the piezo ceramics are exposed to an electrical field.
With ASCO/JOUCOMATIC's multi-layer technology, the control voltage has been reduced to only 20 to 40 volts. Larger strokes can be obtained than normally available with two-layer actuators.
OPERATING PRINCIPLE
closed
half length stroke
open
TECHNICAL CHARACTERISTICS
Fluids : Air and neutral gases
Pressure range: 0 to 8 bar
Connection : Pad mounting M 5
Flow : 0 to 6 l/min
Construction : Vannes à clapets
Actuation : Piezoelectric element
Piloting voltage : 0-40 V
Advantages : Low power consumption
Large electric control range
Practically unlimited service life, no wearing parts
No induction peaks, therefore no voltage peak suppression
Pad mounting to industrial standard
No overheating

Literature
Mini piezo valve
3/2 NC - NO Direct operated, Piezo-valve, plastic body, pad mounting
 Flow control applications
Non-animated

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