| MICRO NEEDLE VALVE |
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| ▶ Features |
- Fine manual adjustment of flows below 1 μl/min
- Reduced flow pulsation by restricting flow
- Wetted materials: Perfluoroelastomer, PEEK and stainless steel
- Operating pressure range: 0 ～ 200 kPa
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| ▶ Flow Characteristics |  | | ▶ Reduction of Flow Pulsation | <Example of Combination with Piezoelectric Micro Pump>
Piezoelectric micro pumps are small-sized, lightweight and slim diaphragm micro pumps
driven by piezoelectric element. By considerably reducing the drive frequency and the drive
voltage from the standard operating ranges, a piezoelectric micro pump alone can transfer
μl/min level flows. However, significant pulsation is created at a low flow rate as
represented by the blue line in the graph below.
By incorporating a micro needle valve on the discharging side of a piezoelectric micro
pump, a low flow rate with almost no pulsation can be achieved. The red line on the graph
below is an example that shows this remarkable reduction in pulsation. Pulsation can also
be reduced when combined with other kinds of pumps, such as peristaltic pumps.
Note: The actual effect may change depending on the flow rates, pumps, types of tubing,
etc. Please consult with us for more details. |  | | ▶ Low Pulsation Micro Pump Module |  |
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