Media Isolation Valves

Compact, lightning-fast & highly precise!

Media Isolation Valves

Compact, lightning-fast & highly precise!

Precision

Our media isolation valves, with their advanced media separation technology, offer unparalleled precision. They enable reliable dosing of even the smallest amounts, under 10 nanoliters, while ensuring that no cross-contamination occurs. Perfect for applications requiring the highest levels of accuracy, safety, and reliability.

Accuracy & Repeatability

Thanks to our patented design, which ensures effective media separation, the valves provide extremely fast and reproducible actuation. This results in consistent flow and precise dosing, with high repeatability throughout the valve’s entire lifespan, without compromising the integrity of the media.

Safety

With built-in media isolation, each valve undergoes automatic adjustment, calibration, and rigorous inspection during the production process. This ensures safe, contamination-free operation, even in highly critical applications, giving our customers total confidence in the reliability of these valves.

System Integration

Our media isolation valves feature low energy consumption and a compact design, making them ideal for portable devices and applications. The media separation technology allows for the safe handling of sensitive fluids, while common grid dimensions can be easily integrated into existing systems.

Media Isolation Valves

Small, Lightning-Fast & Extremely Precise!

Our media isolation valves belong to the class of miniature valves. The key feature is the advanced media separation, achieved e.g. through an integrated elastomer diaphragm. This diaphragm isolates the media-contacting area from the moving components, such as the valve armature and the return spring. As a result, these components and hard-to-clean areas are not exposed to the media, and the internal volume of the valve is minimized.

Thanks to the media isolation, these valves are perfectly suited for handling aggressive media. The medium only comes into contact with the diaphragm and the plastic valve body, avoiding exposure to metals like stainless steel, which prevents unwanted reactions or contamination. This makes the valves ideal for highly sensitive applications, such as cell cultivation.

With their high dynamics and precise media isolation, these valves are designed for micro-dosing liquids. Dosing amounts as small as 10 nanoliters can be administered with precision and reliability throughout the valve's entire lifespan.

Good to Know!

What is a media isolation valve?

Media isolation valves are specialized valves designed to ensure that the medium (liquid or gas) flowing through the valve does not come into contact with the internal mechanical components. This separation is typically achieved using a diaphragm or bellows that isolates the medium from the valve's moving parts.

Media isolation valves come in various designs. There are direct-acting media isolation valves and pilot-operated media isolation valves.

Direct-acting media isolation valves are commonly used for smaller flow rates and are known for their high control dynamics.

Pilot-operated media isolation valves are used for larger flow rates. Due to pilot operation, these valves offer a more compact design and lower electrical power requirements, making them suitable for higher flow demands.

How does a media isolation valve work?

A media isolation valve typically consists of a valve body with an opening through which the medium flows, an electromagnet, a movable armature element, and a diaphragm that separates the mechanical components, such as the armature, from the medium.

Control Signal

The control of a media isolation valve is usually achieved through an electrical signal, typically a variable electrical current or voltage. This control signal is generated by external electronics and transmitted to the valve.

Electromagnet

The electromagnet acts as the driving force of the media isolation valve. The current applied to the electromagnet determines the strength of the magnetic field and the resulting force exerted by the magnet.

Control Element

The magnetic field from the electromagnet acts on the movable armature, which regulates the valve's opening. The design of this control element varies depending on the type of valve.

Media Separation

The media isolation, typically in the form of a diaphragm or bellows, separates the mechanical components from the medium-flowing part of the valve, preventing contamination and protecting the internal mechanisms.

Advantages of Media Isolation Valves

Media isolation valves offer several advantages over valves without isolation:

The medium only comes into contact with the diaphragm and valve body, preventing exposure to internal mechanical components. Typically, high-quality materials like FFKM and PEEK are used for the diaphragm and valve body.
By avoiding contact with the internal components, the risk of contamination is minimized, which is particularly important in hygienic applications or when handling aggressive media.
The diaphragm protects the valve's internal components from corrosive or abrasive media, extending the valve's lifespan.

Additionally, media isolation valves from STAIGER offer the following advantages:

High Repeatability:
They deliver precise control over the flow rate with excellent repeatability, which is critical in many applications.

100% Calibration:
STAIGER proportional valves are 100% automatically adjusted and calibrated to meet customer specifications.

Very High Switching Dynamics:
The lightweight armature design enables rapid switching within milliseconds, despite the media isolation, making them suitable for highly dynamic applications and very small dosing quantities.

Compact Design:
The compact design allows for close arrangement of valves, supporting the implementation of common grid dimensions in the microfluidic field and beyond.

In conclusion, STAIGER's media isolation valves are an excellent choice for applications that demand precise control of flow rates or pressures, especially when the above advantages are critical.

Applications

The highly dynamic switching behavior enables very high switching frequencies, allowing for extremely small dosing volumes, as low as 10 nanoliters. As a result, these valves are ideal for applications that require precise control and small dosing volumes, such as in microfluidics, pipetting systems, industrial inkjet printing, and other high-precision fields.

Isolation valve customised for numerous applications

Perhaps one of the best-known valves, which is used both in industry and in every household, is the isolation valve. Today, the isolation valve is available in a huge range of different designs and sizes, allowing flexible customisation to the area of application. At Staiger, you will find high-quality isolation valves, specifically designed to prevent the process media from coming into direct contact with the valve's internal components, ensuring the longevity of both the valve and the media purity. They are made of robust and durable materials, but also have a well thought-out design so that nothing stands in the way of smooth operation.

What is an isolation valve used for?

The isolation valve is primarily used to control the flow of special liquids. In contrast to standard valves, isolation valves are designed to keep aggressive or sensitive fluids, such as corrosive chemicals, gases, or biofluids, isolated from the valve's actuation mechanism by using a diaphragm or other barrier. This ensures that the valve components are protected from damage and that the purity of the media is maintained. Media isolation valves are frequently used for sensitive or hazardous substances, such as chemicals or pharmaceutical fluids. The ability to completely isolate the media from the valve mechanism makes these valves ideal for applications where contamination must be avoided.

Where can an isolation valve be used?

The isolation valves available from Staiger can be used in a variety of ways and are suitable for numerous areas depending on their properties. They are particularly suited for medical devices, chemical processing, laboratory equipment, and any application where fluid purity, corrosion resistance, or chemical isolation is critical. In addition to liquids, these valves are also highly effective with gases and aggressive or particulate-laden fluids. If you are looking for a suitable isolation valve but are unsure which model is right for you, you can contact Staiger staff at any time. We will be happy to advise you without obligation and help you find the ideal solution.

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