A non-return valve, often referred to as a check valve, is an indispensable element in many industrial systems. It is installed directly between two flanges in a pipe and efficiently controls the liquid flow. Flow is only possible in one direction, while backflow is reliably prevented. This protects the system from damage caused by pressure surges or contamination.
High-quality non-return valves for every application
Our non-return valves are available in a variety of designs, including models with wafer, threaded or flanged connections. We offer a wide range of materials such as stainless steel, galvanised st...
A non-return valve, often referred to as a check valve, is an indispensable element in many industrial systems. It is installed directly between two flanges in a pipe and efficiently controls the liquid flow. Flow is only possible in one direction, while backflow is reliably prevented. This protects the system from damage caused by pressure surges or contamination.
High-quality non-return valves for every application
Our non-return valves are available in a variety of designs, including models with wafer, threaded or flanged connections. We offer a wide range of materials such as stainless steel, galvanised steel, grey cast iron, ductile iron and brass to meet your individual requirements. Our range includes sizes from DN8 to DN600. The right seal is crucial for the optimum function and longevity of a non-return valve. We therefore offer a wide range of seals made from materials such as metal, NBR, EPDM, FPM-VITON and PTFE. The choice of the right seal depends on factors such as temperature, medium and the specific requirements of your application. Our experienced engineers will be happy to advise you on the selection of the optimum seal for your project.
Check valve: Sealing materials
Our check valves are designed for use in a wide range of industrial applications. Given the varying requirements across different industries, choosing the right seal is crucial to ensuring optimal performance and longevity of the check valves.
Check valve NBR seals (nitrile rubber) are ideal for applications involving oils, greases and fuels. They offer excellent resistance to mineral oils and are suitable for temperatures ranging from -30°C to +100°C. They are therefore particularly useful in the automotive and mechanical engineering industries.
Check valve EPDM seals (ethylene propylene diene rubber) offer excellent resistance to weathering, ozone and many chemicals. They are ideal for use in the water and wastewater industry as well as in the food and beverage industry. With a temperature range from -40°C to +120°C, EPDM seals are extremely versatile.
Check valve FPM-VITON seals (fluorocarbon rubber) are characterised by their high resistance to high temperatures and aggressive chemicals. They are particularly suitable for use in the chemical industry and in high-temperature applications, as they can withstand temperatures from -20°C to +200°C.
Check valve PTFE seals (polytetrafluoroethylene) offer excellent chemical resistance and are ideal for use in corrosive environments. They are resistant to almost all chemicals and have a temperature range of -200°C to +260°C. This makes them particularly suitable for use in the chemical and pharmaceutical industries.
Check valve metal seals are used when extremely high temperatures or pressures prevail. They offer excellent resistance and tightness in critical applications, such as in the petrochemical industry and in power plants.