Bürkert diaphragm valves are the proven solution for demanding applications – especially in the pharmaceutical industry and similarly sensitive process environments. By safely separating medium and actuator, they meet the highest hygiene requirements for sterile production processes. They can also be flexibly integrated into your processes thanks to different designs, materials and actuator variants.
Which diaphragm valves does Bürkert offer?
Bürkert offers you a wide range of shut‑off valves and control valves – including numerous diaphragm valves that are essential for hygienic and reliable production. To ensure sterile and contamination-free end products, you need to be able to rely on high-quality valves that are tailored specifically to your needs. That’s why you’ll find the right solution for every individual requirement with us.
Configure your diaphragm valves from the best components:
Body
Diaphragm
Actuator
Actuator: manual, pneumatic and electromotive
The diaphragm valves in the Bürkert range are available with different actuator types, depending on the design and desired degree of automation of your system:
Pneumatic diaphragm valves are a common solution for centrally and decentrally automated processes and enable fast, reliable switching operations.
Electromotive diaphragm valves are used as an energy-efficient alternative in automated systems and do not require a compressed air supply.
Diaphragm: the right material for your application
The diaphragm is the central functional element of a diaphragm valve and must be adapted to your process conditions. When it comes to choosing the right diaphragm, key factors to consider include the medium used and the temperature range.
Two material variants are available:
EPDM (ethylene-propylene-diene rubber) is suitable for many hygienic applications such as water or steam.
PTFE (polytetrafluoroethylene) offers high chemical resistance and can be used for more demanding or aggressive media.
Looking for a material that is resistant to an aggressive medium? As a tool, the Bürkert resistApp helps you search for compatible materials for a wide range of gaseous or liquid media and facilitates the selection of suitable materials when using Bürkert products.
Different designs are available depending on the process requirements and system layout. They determine the flow path of the medium and how the valve is integrated into your system. Options include:
Full-way valves for classic line routings
T-valves and multiway variants for distributing or combining media
Tank bottom valves for solutions with minimum dead space on containers
For highly integrated system concepts, compact block and multiport solutions are also available, which reduce installation effort and enable space-saving system planning.
Bürkert will support you in automating your system: we will assess your specific situation as well as the strengths and weaknesses of different automation concepts and identify the solution that best meets your requirements.
Individual valve configuration
Bürkert diaphragm valves can be configured flexibly by combining the appropriate actuator, diaphragm and body. This gives you a solution that is precisely tailored to your application area, the medium used and the respective process conditions.
Certified quality
In sensitive sectors such as the pharmaceutical industry, documented quality is essential. Our diaphragm valves meet the international requirements of the FDA and EMA and are compliant with guidelines such as GMP/GAMP, ASME BPE and USP Class VI.
Where are our diaphragm valves used?
Our diaphragm valves are used wherever the highest standards of hygiene, tightness and process reliability apply. Especially in the pharmaceutical and biotechnology sectors, they are a central component of sterile production facilities.
Typical applications include:
Purified water and pure steam systems (WFI)
Filling and dosing systems
Preparation, fermentation and freeze-drying processes
Chromatography
Ultrafiltration and other separation processes
Bürkert diaphragm valves are also widely used in the food and beverage industry – wherever hygienic production conditions and reliable media routing are required.
How you benefit with Bürkert
Diverse product selection
We offer a wide range of products for measurement, control and regulation technology used with liquids and gases – covering both single components and complete solutions, locally and globally.
Your service partner throughout the entire life cycle
Globally connected, locally available – for reliable and cost-effective systems. From product selection and commissioning to essential services such as maintenance, troubleshooting and spare parts management, Bürkert ensures that your systems remain available and productive at all times.
Quick reordering
Order diaphragms and other spare parts around the clock in our eShop. Wish lists, saved shopping carts and quick ordering by article number make the process quick and easy.
Quick reordering
You can find diaphragms and other spare parts around the clock in our product area. Here you can quickly and easily display suitable accessories for every diaphragm valve type.
How to find the right diaphragm valve
Our website provides a clear overview of all available process and control valves. You can search directly using a type number or article number, or you can use the practical filter function to filter by criteria such as body shape, diaphragm material, nominal diameter, pressure and temperature range or connection type. Technical data sheets, CAD drawings and information on approvals and certifications are also available to access directly with each product. Find the diaphragm valve that best fits your process requirements.
Still got questions?
Are you still considering which diaphragm valve configuration suits your application? We’d be happy to help you choose the right solution.
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Burkert Benelux B.V.
Minervum 7220
4817 ZJ Breda
Phone: +31 76 7513300
Do you have any questions? Don´t hesitate to contact us.
A diaphragm valve is a shut-off or control valve in which a flexible diaphragm separates the medium from the actuator. Overview of how a diaphragm valve works:
The medium flows through the valve body. An elastic diaphragm separates the medium flow from the actuator.
When the valve opens, the diaphragm lifts and allows the flow to pass.
When the valve closes, the diaphragm is pressed onto a weir in the valve body, thereby stopping the medium flow.
In hygienically sensitive processes, diaphragm valves are considered the state of the art, as they completely separate the medium from the atmosphere and allow for good cleanability. In less critical applications or in secondary and supply lines, however, other valve variants such as ball valve shut-off valves, globe valves or angle seat valves can also be used. Special control valves are also available for more precise flow control.
The service life of a diaphragm depends greatly on the specific usage conditions. With proper design and adherence to the operating parameters, it can be significantly improved. The main influencing factors are:
Pressure & temperature: Operating within the specified limits prevents premature material fatigue.
Switching frequency: Frequent load changes increase the cyclic load on the diaphragm.
Medium: pH value, chemicals and particle load must match the chemical resistance of the diaphragm material.
Flow velocity: Excessively high values cause abrasion, while values that are too low promote fouling.
For an accurate service life prediction, we recommend an individual design review by our application engineering team. Contact us!
The choice of diaphragm material depends on the medium used and the temperature requirements of your application. The base materials available are EPDM and PTFE.
EPDM is suitable for many hygienic applications with water or steam.
If more chemically demanding or aggressive media are used, PTFE is generally required.
To make the diaphragm replacement as easy as possible, please always refer to the operating instructions supplied with the valve. Our video tutorial also demonstrates the process step by step.
