Controlling the backflow of media
Control media. Secure systems. Protect equipment.
Where flow should only go in one direction, check valves are essential. They prevent backflow, protect pumps and compressors, and safeguard complex systems against unwanted flow reversal. WEH® Valve Technology ensures high tightness, long service life, and reliable operation – even under high pressure and with varying media.
Backflow securely under control
The WEH® Check Valves and screw-in valves are designed for liquid and gaseous media, combining intelligent design with a compact construction. They are used wherever flow direction is critical – whether for securing individual lines or protecting sensitive system components. The valves are available in stainless steel, steel, or brass and can be flexibly integrated into various systems.
Safely Stop Backflow
Automatic closing under back pressure prevents unwanted media backflow and process disruptions.
Maximum tightness & safety
Valve seals located outside the media flow protect against damage – ensuring reliable tightness even with dirty media.
Compact and space-saving
Ideal for tight spaces – valves can be screwed directly into pipelines or assemblies.
Practical product range
Wide selection of connection sizes, opening pressures, and variants.
Secure media control – in all applications
WEH® Check Valves and screw-in valves are used wherever liquids or gases must flow reliably in only one direction – and do so consistently:
- Protection of hydraulic and pneumatic lines
- Protection of pumps, compressors, and reservoirs
- Separation of individual pressure zones in machines and systems
- Backflow prevention in gaseous supply networks
- Pressure-retaining systems in process, medical, and food technology
These applications are found in mechanical and plant engineering, the gas industry, medical, chemical and pharmaceutical sectors, as well as food processing – wherever backflow is not an option.
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