Non-Return Valves are an essential component of many industrial operations. These valves are designed to allow fluid to flow in one direction only, preventing it from flowing back in the opposite direction. There are various types of non-return valves available, each designed for specific applications and industries. Non-return valves are used in a variety of applications, including water treatment plants, oil and gas pipelines, and chemical processing plants.
The importance of non-return valves in industrial operations cannot be overstated. These valves help to protect equipment and prevent damage by preventing the flow of fluid in the wrong direction. They also help to maintain the efficiency of systems by preventing backflow and ensuring that fluid is flowing in the intended direction.
As the leading non-return valve suppliers in India, Euroindustriel shares some tips for selecting the right non-return valve for your specific operations and needs.
There are various types of non-return valves available, each designed for specific applications and industries. Some common types of non-return valves include:
Swing check non-return valves: These valves have a hinged disc that swings open to allow fluid to flow through, and then swings closed to prevent backflow. Swing check valves are typically used in pipelines and can handle a wide range of pressures and flows.
Lift check non-return valves: These valves have a disc that is lifted off its seat to allow fluid to flow through, and then falls back onto its seat to prevent backflow. Lift check valves are typically used in low-pressure systems and are suitable for handling viscous fluids.
Ball check non-return valves: These valves have a ball that is pushed off its seat by the flow of fluid, and then falls back onto its seat to prevent backflow. Ball check valves are typically used in low-pressure systems and are suitable for handling clean fluids.
Disk check non-return valves: These valves have a disk that is lifted off its seat to allow fluid to flow through, and then falls back onto its seat to prevent backflow. Disk check valves are typically used in high-pressure systems and are suitable for handling dirty fluids.
Diaphragm non-return valves: These valves use a flexible rubber diaphragm to create a normally closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side (pressure differential) for the diaphragm non-return valve to open and allow flow to pass through. Once the positive pressure stops, the diaphragm automatically flexes back to its original closed position.
Stop check non-return valves: These valves have an override control to stop the flow, regardless of flow direction or pressure. In addition to closing in response to insufficient forward pressure or backflow, stop check non-return valves can also be deliberately shut off by an external mechanism.
In-line non-return valves: These valves are similar to lift check non-return valves but generally feature springs that lift when pressure is on the upstream side of the valve. The pressure needed on the upstream side to overcome the spring tension is referred to as the “cracking pressure”. When the pressure goes below the cracking pressure, the spring will close the in-line non-return valve to prevent backflow. In-line non-return valves are typically used in low-pressure systems and are suitable for handling clean fluids.
Additional Read: Learn about the other valves available with Euroindustriel, and their industrial applications
Selecting the proper type of non-return valve(NRV) is essential for smooth, trouble-free, low-maintenance, and long-term operation. There are several parameters to consider when selecting a non-return valve, including:
Type of fluid to be carried: The type of fluid being transported through the non-return valve is an important factor to consider. Different types of fluids may require different materials and designs, so it is important to choose a valve that is suitable for the specific fluid being transported.
Location of the non-return valve: The location of the non-return valve in the system is also important to consider. For example, NRVs may be installed in pipelines, tanks, or other equipment. The location of the NRV may influence the size, material, and other characteristics of the valve.
Pressure and temperature of the flowing fluid: The pressure and temperature of the fluid being transported can also influence the selection of an NRV. Some NRVs are designed for high-pressure or high-temperature environments, while others are suitable for low-pressure or low-temperature conditions.
Hydraulic characteristics: The hydraulic characteristics of the NRV, such as the minimum and maximum flow rates, can also be important to consider. It is important to choose an NRV that is suitable for the flow rate of your system.
Closing time: NRVs can be classified as slow, normal, or fast-acting based on the closing time of the valve. The closing time of the NRV may influence the performance and suitability of the valve for different applications.
Installation type: NRVs can be installed in either a vertical or horizontal orientation. The installation type may influence the size, material, and other characteristics of the valve.
Cost: The cost of the NRV may also be an important factor to consider. NRVs can vary in price depending on the size, material, and other characteristics of the valve. It is important to consider not only the initial purchase price of the NRV, but also the installation cost and ongoing maintenance costs.
Non-return valves are an essential component of many industrial operations, and choosing the right NRV (non-return valve) can have a significant impact on the performance and efficiency of your system. Since there are many types of non-return valves available, and it is important to choose one that is suitable for your specific application.
If you are in need of a high-quality NRV for your operations, consider using Euroindustriel non-return valves. Euroindustriel is one of the top non-return valve suppliers in India, with a wide range of NRVs available to suit every application. Contact Euroindustriel today to learn more about their non-return valve offerings and how they can support your operations.