Discover high-quality non-return valves, swing check valves, ball check valves made of stainless steel, steel, ductile iron, grey cast iron and more at Fergo Armaturen.
Our products offer reliable solutions for controlling fluid flows in various industrial applications. Whether stainless steel for increased corrosion resistance or steel for robust operating conditions, our non-return valves ensure high quality and durability. Optimise your processes with precise control and protection against unwanted backflow. Find out more about our large selection and find the right non-return valve for your requirements at ...
Discover high-quality non-return valves, swing check valves, ball check valves made of stainless steel, steel, ductile iron, grey cast iron and more at Fergo Armaturen.
Our products offer reliable solutions for controlling fluid flows in various industrial applications. Whether stainless steel for increased corrosion resistance or steel for robust operating conditions, our non-return valves ensure high quality and durability. Optimise your processes with precise control and protection against unwanted backflow. Find out more about our large selection and find the right non-return valve for your requirements at Fergo Armaturen.
Gestra non-return valves and foot valves
Gestra is a renowned manufacturer of fittings and also offers a wide range of non-return valves. Foot valves are a special type of non-return valve that are often used in fittings such as taps or instantaneous water heaters.
Applications for non-return valves and swing check valves
Check valves and non-return valves are important components in various systems to prevent the backflow of liquids or gases. They are often used in industries such as water supply, where they prevent the backflow of water and thus avoid the contamination of drinking water systems. In pump systems, they protect pumps from damage caused by backflow. In HVAC systems (heating, ventilation and air conditioning systems), they ensure that refrigerants only flow in one direction and that the efficiency of the system is maintained. In irrigation systems, they prevent contaminated water from flowing back into clean water supplies. In the oil and gas industry, they ensure that hazardous substances flow safely and in one direction. Check valves are also used in wastewater systems to prevent contaminated water from flowing back into clean systems and in ventilation systems to ensure proper airflow. In shipping, chemical plants, fire protection systems and hydraulic networks, these valves play a crucial role in the safety, efficiency and integrity of systems by ensuring the flow of liquids or gases in one direction only.
Check valves - their sealing applications
Various sealing materials are used in check valves, including EPDM, NBR, Viton and PTFE, depending on the specific requirements of the application:
EPDM (ethylene propylene diene rubber): EPDM seals are known for their good resistance to water, steam, ozone and UV radiation. They are well suited for applications where good weather and water resistance are required, such as in water supply and HVAC systems.
NBR (nitrile butadiene rubber): NBR gaskets are characterised by excellent resistance to oils, fuels and many chemicals. They are ideal for applications in the oil and gas industry as well as in automotive and aviation technology, where media containing oil must be sealed.
Viton FPM/FKM: Viton seals offer excellent resistance to high temperatures, chemicals and solvents, including aggressive chemicals such as acids and alkalis. They are often used in chemical processes, in the petrochemical industry and in food processing.
PTFE (polytetrafluoroethylene): PTFE gaskets have exceptional chemical resistance to almost all media and are resistant to high temperatures. They are used in critical applications where excellent sealing performance and chemical resistance are required, such as in the chemical, pharmaceutical and food processing industries.
Each of these sealing materials offers specific properties that can be selected according to the requirements of the application to ensure effective sealing and long-term reliability in check valves.
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