Check Valve

A non-return valve is a valve that allows liquids or gases to flow in one direction and prevents them from flowing back in the opposite direction. It is often used in pipework systems to prevent backflow and possible contamination.

FPM (fluororubber, also known as Viton) is a favoured sealing material for demanding applications in non-return valves due to its high resistance to aggressive chemicals, high temperatures and various oils and fuels. It is frequently used in chemical and petrochemical plants, in the food and beverage industry and in the pharmaceutical industry.

Yes, check valve or non-return valves can be used in both liquid and gas systems. However, it is important to ensure that the valve is suitable for the specific requirements of the gas system.

Choosing the right sealing material for your swing check valve depends on several factors, including the type of liquid or gas, temperature and pressure conditions, chemical resistance and environmental factors such as UV radiation and ozone exposure. A specialist or the manufacturer can help you select the appropriate sealing material based on your specific requirements.

NBR (nitrile butadiene rubber) is often used as a sealing material in non-return valves due to its resistance to oils, greases and various chemicals. It is ideal for applications in industrial plants, oil and gas pipelines and hydraulic systems.

EPDM (ethylene propylene diene rubber) is a popular sealing material for non-return valves due to its excellent resistance to UV radiation, ozone and various chemicals. It is particularly suitable for applications in the field of water supply, heating and cooling systems as well as for sanitary installations.

Non-return valves are manufactured from various materials, including stainless steel, galvanised steel, brass and plastic. The choice of material depends on the application and the requirements for corrosion resistance and durability.

These valves are often used in water and sewage systems, heating, ventilation and air conditioning (HVAC) systems, and in industrial processes where it is important to prevent the backflow of media.

Choosing the right sealing material for your swing check valve depends on several factors, including the type of liquid or gas, temperature and pressure conditions, chemical resistance and environmental factors such as UV radiation and ozone exposure. A specialist or the manufacturer can help you select the appropriate sealing material based on your specific requirements.

The two plate open in the direction of flow due to the pressure of the flowing medium. In the event of backflow or pressure drop, they collapse and close the passage to prevent backflow.