Normally Closed Microvalve Classic

11

3
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2
2

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4

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16.5
16.5
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ØØ.8.8B
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The 2/2-way normally closed microvalve is a ultracompact, lightweight device designed with cutting-edge
actuation technology using a shape memory alloy.16.5
Itsmedia-separated design makes it compatible with both
3 a8.25liquids and gases, making it highly versatile acrossrange of application areas such as life sciences,microfluidics, diagnostics, andaerospace.
C6

ØØ11.6.655

1

8.25
8.25

20
20
12
1233

Ø1Notably, the microvalve delivers an exceptional fluidic
performance for its size while maintaining minimal
power consumption, setting a new benchmark inefficiency and effectiveness in the realm of microvalve
technology.
Ø.8

ØØ11.6.655

128.2

C

Contact Information

FF.65
Ø1.65
Ø1

D

3E
E

memetis GmbH
Gablonzer Str. 2776185 Karlsruhe, Germany
Tel. +49 721 547000240
Email: support@memetis.com

5ØØ11.6.655

20D
D

3.8

B.65

C

Dimensions in millimeters
CAD model available on request

Datasheet

Normally Closed Microvalve ClassicGeneral Information
Model ID

MVL-22-NC-08-14P-PEEK-SIL

Type

2/2-way, media separated

Functionality

Normally closed valve: on/off, proportional control possible

Media types

Liquids, gases

Dimensions (WxLxH)

20 mm x 5 mm x 8 mm

Nominal orifice DN

0.8 mmWeight0.8 g

Internal volume< 6.5 µl

Fluidic connection

Flange mount (2x M1.6 screws), silicone o-rings included

Leakage rate

< 1 x 10-3 (mbar x l)/sCycle lifetime

30 x 106 cycles

Performance Data
Min. relative input pressure

0.0 barMax. relative pressure (inlet)

3.0 barMax. relative pressure (outlet)

2.0 barOperating temperature

10 °C to 55 °C ambient temperature

Storage temperature-20 °C to 90 °C

Switching time (on)< 0.05 s (at ∆p = 1 bar and 20 °C ambient temperature)

Switching time (off)< 0.16 s (at ∆p = 1 bar and 20 °C ambient temperature)

Flow rate (air)3000 ml/min (at 1 bar pressure difference)

Flow rate (water)

90 ml/min (at 1 bar pressure difference)

Kv value

0.005 m3/h

Autoclavabilty

Yes (tested at 134 °C and 2 bars)

Wetted Materials
HousingPEEK

Sealing membrane

Silicone (contact us for different materials)

O-rings

Silicone (contact us for different materials)

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Datasheet

Normally Closed Microvalve Classic

Electrical Specifications
Electronic control

Constant current controlled

Electrical connection

Pin header, pitch 2.54 mm (contact us for different connection)

Electrical power consumption< 0.25 W

Actuator resistance

1.05 Ω ± 20 %Continuous current control
Continuous electrical current

500 mA (at 20 °C ambient temperature)

Electrical power consumption

0.25 W (at 20 °C ambient temperature)Continuous electrical current

350 mA (at 50 °C ambient temperature)

Electrical power consumption

0.125 W (at 50 °C ambient temperature)

Electrical current profile control
Peak and hold electrical currents

750 mA for 50 ms, 375 mA continuous (at 20 °C ambient temp.)

Electrical power consumption< 0.6 W for 50 ms, < 0.15 W continuous (at 20 °C ambient temp.)⚠ Please note:• The valves are current-controlled. For easy integration and evaluation we offer electronic control units.
• An electrical overcurrent may reduce cycle life-time.
• We recommend validating the current profiles within your specific application and ambient conditions.
• Do not attempt to operate the valve at constant voltage!

Figure 1: Exemplary circuit design for constant current source

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Datasheet

Normally Closed Microvalve Classic

Flow Rate Characteristic

Figure 2: Flow rate characteristic for air at 20 °C, an applied pressure difference of 0.05 bar to 3 bar and acontinuous electrical current of 500 mA.

Installation
memetis miniature valves have a flange mount connection. Two M1.6 screws are required for integration on a flat
backplane with fluidic connection holes of 0.8 mm orifice. The o-rings needed for sealing interface are integrated
underneath the valve.

Accessories
ECU-S1

Electronic control unit (on/off) for 1 valve

ECU-P2

Programmable and GUI supported electronic control unit for 2 valves

Tube adapters

Suitable for interfacing 1 or 2 valves with 1 mm ID silicone tubes

Threaded adapters

For 1, 2, 4 valves with a common inlet or outlet. Suitable for connecting
UNF 10/32 threaded connectors, e.g., LUER® or IDEX®.

Figure 3: ECUs and valve adapters are available from the memetis online shop at shop.memetis.com

Contact Information
memetis GmbH
Gablonzer Str. 2776185 Karlsruhe, Germany
Tel. +49 721 547000240
Email: support@memetis.com

Version 1.0

June 2023

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