WEH® Valve Technology
Reliable backflow prevention in every application
Whether in mechanical engineering, conveyor technology, or chemical industries – wherever liquids or gases must flow in defined directions, robust check valve solutions are required. Especially at high pressures, with sensitive media, or in compact installation spaces, maximum tightness, durability, and reliability are crucial.
Check valves & screw-in valves – precisely matched & practical
WEH offers a wide range of check and screw-in valves made of stainless steel, steel, and brass – suitable for hydraulic, pneumatic, media, and process applications up to 300 bar. Depending on the application, ball or cone seals are used. Miniature versions for tight installation spaces are also available.
Maximum tightness & safety
Valve seals located outside the media flow protect against damage – ensuring reliable tightness even with dirty media.
Durable & robust construction
High-quality materials such as stainless steel, galvanized steel, or brass protect against corrosion and wear – for long service life.
High flow rate with compact design
Thoughtful flow design and minimal opening pressure ensure high efficiency and low pressure losses.
Practical product range
Wide selection of connection sizes, opening pressures, and variants.
Overview of valves
Check Valves
Backflow prevention for gaseous and liquid media – available in stainless steel, galvanized steel, and brass. Suitable for pressures up to 300 bar, with soft or metal-sealing variants
Screw-in Valves
Compact valves for direct integration into block systems – soft-sealing, low-maintenance, and pressure-resistant up to 250 bar. Ideal for hydraulic and pneumatic applications.
Looking for a custom check valve? We develop your solution.
Not every system offers enough space – and standard valves don’t always fit. That’s why WEH develops custom check valves.
Whether limited installation space, specific opening pressure, or special media – our modular valves can be flexibly configured and ensure optimal performance with suitable materials and seals.
Typical application
Controlling the backflow of media
Find the right solution faster!
Our products are as individual as your application. To provide you with fast and tailored support, please download the document, fill it out, and send it back to us. Our product experts will then get in touch with you promptly.
Discover & Download
Downloads
Catalogs
Get a quick overview of the entire range of WEH products - clear, compact and as a PDF for download.
Operating Instructions
All information on the safe commissioning and use of our products - including safety instructions and step-by-step instructions.
Certificates
Our products are tested and certified according to international standards. Here you will find all relevant quality and conformity certificates.
Why WEH?
Quality You Can Rely On
Our products are manufactured to the highest standards. At WEH, quality is no coincidence – it’s our standard, ensured by 100% final inspection and certified processes.
Service You Can Rely On
By choosing a WEH® product, you’ve chosen long-lasting quality. And our service ensures it stays that way. Whether maintenance, inspection, repair, or original spare parts – our experienced team is committed to maximum safety, efficiency, and preserving the value of your equipment.
Fast and Helpful Support
Questions about application, technology, or spare parts? Our technical support team is here for you – direct, competent, and without detours. Personally available and globally reliable.