DTI motorized piezoelectric valves include pinch and ball versions

A line of motorized piezoelectric valves includes pinch piezovalves and ball piezovalves.

A line of motorized piezoelectric valves includes pinch piezovalves and ball piezovalves. Both utilize the company’s rotary piezomotor and provide an alternative to comparable conventional valves. Benefits include 10 times faster cutoff (open/close) time, 50 times greater precision in flow control, and a 50 μsec reaction time.
Discovery Technology International
Sarasota, FL

www.discovtech.com

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PRESS RELEASE

Discovery Technology International, LLLP
6578 Palmer Park Circle

Sarasota, FL 34238
Tel. 941-921-5111 ~ Fax 941-921-5114
www.discovtech.com

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DTI'S New Class of PiezoValves
DTI has recently developed a range of novel (pats pending) motorized piezoelectric valves. Depending on their mode of operation, the new piezo valves are divided into 2 main types –pinch piezovalves (linear and eccentric) and ball piezovalves (shut ON/OFF and flow control). In each case, the underlying technology is based entirely on DTI's unique rotary piezomotor. The result is a new class of piezovalves that provide a superior alternative to comparable conventional valves used in many applications.

Key Benefits:

* 10-times faster cut-off (open/close) time
* 50-times greater precision in flow control

* 100-times faster reaction time (i.e. 50μsec)

* Dual functionality - usable as fast action cut-off valve, or ultra precise flow-control, or both

* Low power consumption and low voltage - zero power consumption in ‘hold’ position

* Improved reliability – motor will not burnout even when valve is jammed/stalled

* Reliable control – using either analog or digital controllers

* Lightweight design 3-4 times lighter than comparable conventional systems

* Economical to implement and use

Linear/Eccentric Pinch Valves
The piezovalve consists of input and output flow connectors with flexible tubing between them; a leadscrew (linear piezovalve) or an eccentric head (eccentric piezovalve) attached to a bi-directional rotary piezomotor. The regulator function of the valve is performed by precise linear movement of the leadscrew (linear piezovalve) or the precise rotation of the eccentric head (eccentric piezovalve), which by pressing on the flexible tubing, restricts the flow.

The reversible design of the valve enables linear or rotary movement of the leadscrew and the eccentric head, correspondingly, in either direction, providing continuous control of flow rate. An optical encoder (not shown) mounted on the piezovalve shaft monitors its position, and the feedback is used to control precisely the flow.

The control board of the piezovalve has a number of inputs and outputs, including alarm condition. It can operate in open (manual) or closed (automatic) loop control. The piezovalve can be controlled by either current or voltage devices. It comes with a GUI software, which allows the user to set up a number of control parameters in order to optimize the performance of the piezovalve.

Ball Valves
The piezovalve consists of input and output flow connectors with a spherical saddle, a turn ball which is firmly attached to either uni-directional (shut ON/OFF) or bi-directional (continuous flow control) piezomotor. The regulator function of the valve is performed by precise rotation of the rotary piezomotor. The reversible design of the piezovalve enables rotary movement of the ball in either direction, providing continuous control of flow rate. An optical encoder (not shown) mounted on the piezovalve shaft monitors its position, and the feedback is used to control precisely the flow.

The control board of the piezovalve has a number of inputs and outputs, including alarm condition. It can operate in open (manual) or closed (automatic) loop control. The piezovalve can be controlled by either current or voltage devices. It comes with a GUI software, which allows the user to set up a number of control parameters in order to optimize the performance of the piezovalve.

The piezoelectric valve has a very broad range of industrial applications. These include food processing and pharmaceutical, gas/oil pipelines, power reactors, chemical reactors, steam/ water pipelines, and vacuum systems. In addition, the piezoelectric valve offers advantages in the further development of power systems (internal combustion, turbojets, steam and gas generators, and even in nuclear reactors), and hydraulic systems requiring both fast response and highly accurate control. The technology will also find uses in the development of "thermo-gas-hydraulic" systems working in real time flow-control mode.

In addition to the general industrial uses mentioned, the piezoelectric valve offers significant commercial potential at the domestic level. The valve would enable precise regulation of household water and gas supply with a noiseless, miniature and energy efficient control element. Moreover, it offers potentially significant improvement in safety margins. For additional information and commercial inquires please contact DTI.

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Posted by Lee Mather

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