Media-separated solenoid valves for analysis and medical technology
Our OEM products are made according to the specific needs of our customers. For this reason we can only show you a small introduction into our product range. Please contact us so we can offer you products customized to your needs.
Product overview
NV Series
2/2-way ultra miniature diaphragm isolation solenoid valve. Outer dimensions from only Ø5.7 x 32.5mm (Height varies depending on the fluidic connection).
- Connection: 0.4mm
- Working pressure inlet: 0 - 1000mbar
NLV-Series
2/2-way ultra miniature diaphragm isolation solenoid valve in a latching design. Outer dimensions from only Ø5.7 x 32.5mm (Height varies depending on the fluidic connection) .
- Orifice diameter: 0.4mm
- Working pressure inlet: 0 - 1000mbar
SMV Series
2/2-way Shape Memory Alloy valve, characterized by extremely compact design and the elimination of the typical noise generated by solenoid valves. Power consumption is only 0.3W.
- orifice diameter: 0.4 - 0.8mm
- operating pressure range input: 0 - 2500mbar
- Low cost
KV Series
2/2-way and 3/2-way miniature diaphragm isolation solenoid valve in a compact design for a flat assembly.
- Orifice diameter: 0.8mm
- Working pressure inlet: 0 - 1000mbar
EXAK Series
2/2-way and 3/2-way miniature diaphragm isolation solenoid valve - pumping volume optimized.
- Orifice diameter: 0.8mm
- Working pressure inlet: -400 - 1000mbar
EXAKN Series
2/2-way and 3/2-way miniature diaphragm isolation solenoid valves - pumping volume optimized.
- Orifice diameter: 0.8mm
- Working pressure inlet: -400 - 3000mbar
WTE Series
2/2-way and 3/2-way miniature diaphragm isolation solenoid valves with a high vacuum range.
- Orifice diameter: 1.0mm
- Working pressure inlet: -650 - 1000mbar
RVC Series
2/2-way and 3/2-way rocker type diaphragm isolation solenoid valves with fluid separation.
With 1.0 mm orifice diameter as standard, pressures of up to 1.0 bar and vacuum of up to -500 mbar are possible at all connections.
EXV Series
2/2-way miniature diaphragm isolation solenoid valve with flange connection.
- Orifice diameter: 1.0mm
- Working pressure inlet: -200 - 2000mbar (Special models up to 6000mbar)
JTV Series
2/2-way miniature diaphragm isolation solenoid valve with media hose barbs for the simple integration in the hose systems.
- Orifice diameter: 1.2mm
- Working pressure inlet: 0 - 800mbar
STV Series
2/2-way diaphragm isolation solenoid vale in a small design with a big selection of materials and connections.
- Orifice diameter: 1.0 - 1.2mm
- Working pressure inlet: -500 - 2000mbar
CTV Series
2/2-way and 3/2-Wege miniature diaphragm isolation solenoid valves.
- Orifice diameter: 1.0 - 1.6mm
- Working pressure inlet: -500 - 2000 mbar (Special models up to 6000 mbar)
RVB Series
2/2-way and 3/2-way diaphragm isolation solenoid valve - rocker mechanism. Optionally you can integrate an electronic in the valve housing in order to reduce the holding voltage.
- Orifice diameter: 1.6mm
- Working pressure: -900 - 2500mbar
WTA / XTA Series
2/2-way diaphragm isolation solenoid valve with coil housing or without for cost optimisation. An electronic can be integrated in the housing for optimisation.
- Orifice diameter: 1.2 - 2.0mm
- Working pressure inlet: -500 - 2000 mbar (Special modes up to 6000 mbar)
WTB Series
3/2-way diaphragm isolation solenoid valve with coil housing or without for cost optimisation. An electronic can be integrated in the housing for optimisation.
- Orifice diameter: 1.2 - 2.0mm
- Working pressure inlet: 0 - 2000 mbar (Special models up to 6000 mbar)
WLB Series
2/2-way and 3/2-way diaphragm isolation solenoid valve in a latching design.
- Orifice diameter: 2.0mm
- Working pressure inlet: -900 - 2000mbar
MTV Series
2/2-way and 3/2-way diaphragm isolation solenoid valve with big selection of materials and connections.
- Orifice diameter: 0.8 - 2.0mm
- Working pressure inlet: -1000 - 2000 mbar (special models up to 6000 mbar)
WEG Series
2/2-way and 3/2-way diaphragm isolation solenoid valve - pumping volume optimized.
- 2.0mm
- Working pressure inlet: -900 - 2000 mbar
MCV Series
2/2-way diaphragm isolation solenoid valves.
- Orifice diameter: 2.0mm
- Working pressure inlet: -270 - 1000mbar
MLV Series
2/2-way and 3/2-way diaphragm isolation solenoid valve with a big selection of materials and connection.
- Orifice diameter: 2.5mm
- Working pressure inlet: -400 - 2000mbar
ACV Series
2/2-way diaphragm isolation solenoid valve with hose barbs for the simple integration in devices.
- Orifice diameter: 3.0mm
- Working pressure inlet: -550 - 1000mbar
YTV Series
2/2-way diaphragm isolation solenoid valve with a high vacuum range.
- Orifice diameter: 3.0mm
- Working pressure inlet: -1000 - 1500mbar
WBV Series
2/2-way normally closed diaphragm isolation valve - for dialyse machines.
- 4.0mm
- Working pressure inlet: -900 - 3000 mbar
- Media temperature up to 95°C as a standard
NPV-Series
2/2-way proportional diaphragm isolation solenoid valve. With this valve you can control the flow in your application.
- Orifice diameter: 4.0mm
- Working pressure inlet: 0 - 1000mbar
NRV-Series
2/2-way and 3/2-way diaphragm isolation solenoid valve. Because of a big selection of materials and connection this valve can be used in many applications with big flows.
- Orifice diameter: 4.0 - 6.0mm
- Working pressure inlet: -900 - 2000mbar
PKV Series
2/2-way and 3/2-way diaphragm isolation solenoid valves. Various valve bodies made of PEEK provide an easy and cost-efficient variety for the integration.
- Orifice diameter: 4.0 - 6.0mm
- Working pressure inlet: -900 - 2000mbar
HTV Series
2/2-way diaphragm isolation solenoid valve with an orifice diameter of 10.0mm made off PTFE.
- Orifice diameter: 10.0mm
- Working pressure inlet: -900 - 1000mbar
Separating diaphragm solenoid valves are mainly used in the analytical & medical technology. In applications with aggressive liquids or even gases, the media-contacting materials are limited to the separation membrane, the plastic valve body and possibly a seal, resulting in a high chemical resistance. Due to this separation of fluid from the actuation parts of the valve, the internal volume is significantly reduced. For more information about the design, please see the technical information on diaphragm separated solenoid valves.
Standard solutions and customization of solenoid valves with separating diaphragm
By using high quality materials, robust valve designs and due to the pre-shipment testing of every single valve before delivery, we achieve a long life and reliability. Due to the longtime experience of valve-development we can offer many optimization and hich quality valve solutions, resulting in good flushability and a low internal volume, for example.
Solutions adapted to the requirements and specifications of individual systems allow the use of these diaphragm separated solenoid valves in a variety of devices. Most valve series are available as 3/2-way, 2/2-way normally closed and 2/2-way normally open versions. A wide range of fluidic connections, such as threads, hose barbs or flanges (manifold mount versions) are available depending on the valve series. Together with our partners, we customize the valves according to the requirements in the way of a modular construction system, so that over five thousand customer-specific solutions have already been developed from the individual valve series models. Some of these optimization options include:
- Customizing wetted materials
- Customizing the port connections
- Optimizing the internal volume
- Optimizing the pumping volume
- Customizing the ambient and / or medium temperature range
Using a holding voltage can reduce the power consumption as well as the heat development of the valves. To minimize this effect, we offer valve series with a latching magnet.
Diaphragm isolation solenoid valves in the microfluidic
The compact design of the microvalves makes it possible to use them in the Microfluidic field, such as on chips or in handheld devices. The typical orifice diameters of 0.4mm and 0.8mm, as well as high-quality materials such as PEEK and FFKM allow the minimization of already known solutions and new developments.
Modules from pumps & valves as a complete solution
With our partners, we offer our complete solutions as valve blocks or modules of pumps and valves. This allows the simple use of a tested fluidic unit in the manufacturing process of our customers. Read more about the modules from valves & pump code.
Frequently asked questions
When do I need a diaphragm isolation valve?
A diaphragm isolation (media-isolated) valve is useful or necessary whenever the medium must not touch the valve actuator – or the actuator must not contaminate the medium. Typical reasons:
- Aggressive or corrosive media: Acids, alkalis and solvents attack the coil, armature and seals of a standard solenoid valve. In a diaphragm isolation valve only chemically resistant materials (e.g. PTFE, PEEK, EPDM, FFKM) come into contact with the medium.
- Purity and freedom from contamination: In analytical, laboratory and medical technology there must be no carry-over between samples and no wear particles from the actuator in the medium.
- Small volumes and dosing: The medium only flows through a small valve body with minimal dead volume. This matters for microfluidics, dosing and flushing.
- Crystallising, sticky or particle-laden media: The separating diaphragm prevents deposits from reaching the armature chamber and jamming the valve.
- High hygiene and safety requirements: The actuator is sealed off from the medium and is easier to clean or replace.
For water, air or neutral gases without special purity requirements, a simple direct-acting solenoid valve is often sufficient. Contact us – we will recommend the right valve for your medium.
Which switching functions and connections are available for diaphragm isolation valves?
Most valve series are available as 3/2-way valves and as 2/2-way valves, normally closed or normally open. Depending on the series, various fluidic connections are available, for example threads, hose barbs or flanges. We will gladly discuss with you which combination suits your device.
Can diaphragm isolation valves be adapted to my application?
Yes. Together with our partners we adapt the valve series to customer requirements using a modular system; this has already produced more than five thousand customer-specific solutions. Typical adaptations:
- wetted materials
- fluidic connections
- internal volume
- pump volume or push-out effect
- ambient and medium temperature range
How can the power consumption and heat generation of a diaphragm isolation valve be reduced?
A holding voltage reduces the power consumption and heat generation of the valve. To avoid the effect completely, we offer valve series with a bistable (latching) magnet: they only need current to switch, not to hold their position. This helps in battery-powered or temperature-sensitive devices.
Which materials come into contact with the medium?
With diaphragm isolation valves the wetted materials are limited to the separating diaphragm, the plastic valve body and, if required, a seal. This gives high chemical resistance. Because the medium is separated from the actuator parts, the internal volume is also significantly reduced.
Are diaphragm isolation valves suitable for microfluidics?
Yes. The compact design of the micro valves allows use in microfluidics, for example on chips or in handheld devices. Typical orifice sizes are 0.4 mm and 0.8 mm, together with high-quality materials such as PEEK and FFKM. The small internal volume supports small sample volumes and good flushability.
How do diaphragm isolation valves achieve long service life and reliability?
High-quality materials, robust valve designs and testing of every valve before delivery ensure, together with our partners, a long service life and reliability. Decades of experience in optimisation for demanding applications also flow into the design, for example for good flushability and a low internal volume.
Are complete solutions of valves and pumps available?
Yes. With our partners we supply valve manifolds as well as modules of pumps and valves as complete solutions. This lets you use a tested fluidic unit directly in your production process. Contact us – together we will develop the right solution.