Factory price 25mm swing type check valve uses CPVC for chemical resistance, corrosion resistance and high-temperature resistance. 1 inch swing check valve is typically used in piping applications where reliable backflow prevention is required, such as water supply, wastewater treatment, irrigation and industrial processes.
High quality wafer check valve for sale online. 1/2 inch check valve with 304/316 stainless steel, DN 15 and PN 4 MPa, disc structure, usually used in space limited applications such as HVAC systems, water treatment plants and industrial processes.
1 1/2" swing check valve for sale online. It is used in various applications to prevent backflow and ensure unidirectional flow in piping systems. CPVC all-plastic material, one way, DN40, excellent resistance chemical and heat resistance, 1.5-inch swing type check valve is widely used in iron and steel, metallurgy, petroleum, chemical industry, chemical fertilizer, pharmaceutical, electric power, environmental protection, sewage treatment management, etc.
The provided 1 1/4" swing check valve is designed for preventing backflow and ensuring unidirectional flow in piping systems. It is a 32mm CPVC check valve with super chemical resistance and heat resistance and long service life.
Quality wafer check valve is designed for regulating and controlling the flow of fluid through a pipeline while preventing backflow. Long life 3/4" stainless steel non return valve, DN20, PN 4 MPa, can transfer water/ oil/gas, suitable for aerospace or marine applications.
Buy a 1" foot valve for a water pump that can provide reliable and efficient fluid control in your pumping system. A type of check valve, DN25, brass body with a stainless mesh filter, suitable for use in harsh environments and corrosive fluids.
Buy high quality 1" (DN25) UPVC foot valve at low price. It is a kind of non-return valve for water pumps. Durable foot valve cover is equipped with a screen to prevent the inflow of impurities and avoid clogging.
Get a quality wafer check valve at low price. This 1" stainless steel wafer check valve comes with DN25, PN 4MPa, single disc construction, reliable, durable and low maintenance. Wafer non return valve is widely used in various pipeline projects such as water plants, papermaking, heating, refrigeration, petroleum, construction, wind power, construction, and medicine.
1/2" (DN15) brass foot valve for sale online. It is installed in the bottom of vertical pipes or wells to control the flow of water, oil or other fluids. Low price foot valve is usually used in agricultural irrigation, industrial and commercial water supply and water treatment system.
1/2 inch (DN15) foot valve for sale online. UPVC materials, 16kg nominal pressure, good sealing, slight pressure loss and good hydraulic performance. High quality plastic check valve is an ideal water pump supporting facility for petrochemical, chemical, textile, printing and dyeing, metallurgy, mining, irrigation and drainage industries.
304/316 stainless steel swing check valve for sale online. It is a 1/2" horizontal non-return valve that can prevent the backflow of water, oil and gas. DN15, BSP/BSPT/NPT thread for selection, 200 WOG swing check valve widely used in oil and gas, petrochemical, water treatment, pharmaceutical and HVAC industries.
High quality brass foot valve is a check valve used in pumping systems to control the flow of water or oil. 1-1/2 inch (DN40) well foot valve is suitable for many applications such as agricultural irrigation systems, industrial and commercial water supply systems, and oil and gas production.
1-1/2" (DN40) UPVC foot valve is a plastic non return valve, designed for preventing backflow and maintaining fluid pressure. Flange connection, 16kg nominal pressure, durable and corrosion-resistant, suitable for water treatment, agriculture, chemical processing, etc.
Low price foot valve is a check valve used in applications where a pump is used to lift fluid from a well or other source. Durable 1-1/4" (DN32) brass foot valve can apply in industrial and commercial water systems to help maintain a constant flow of water to pumps and other equipment.
Buy a 1-1/4" (DN32) UPVC foot valve for water pump. It is a kind of non-return valve, features plastic material and flanged connection, can prevent backflow and maintains fluid pressure, widely used in process plants, chemical plants, and wastewater treatment facilities.
The provided 1-1/4" (DN32) wafer check valve is a stainless steel non-return valve that regulates and controls the flow of water/oil/gas through a pipeline while preventing backflow. Quality wafer disc check valve is often used in space-constrained applications such as HVAC systems, water treatment plants, and industrial processes.
Cheap 2" (DN50) foot valve is a non-return valve used in pipelines and other fluid systems to prevent fluid backflow. Quality brass check valve with good flow characteristics is used in agricultural irrigation systems to help pump water from wells or other water sources.
2 inch (DN50) foot valve is available with all-plastic material, 16kg nominal pressure and a flange connection, which can be used to control the flow of fluid in the pipeline. Equipped with a filter to prevent impurities from entering. Quality UPVC foot valve is suitable for handling chemicals and corrosive liquids.
Durable 3/4 inch brass foot valve with DN20, PN1.6 Mpa and substantial temperature resistance. It is a type of check valve, applied for applications where water pumps draw water or other fluids from wells or other sources.
A check valve, also known as a non-return valve or one way valve, is a mechanical device that allows fluid or gas to flow in one direction only and prevents backflow in the opposite direction. NRV valve is designed to automatically open and close in response to the pressure or flow of the fluid or gas, without requiring external control or power. ATO 1 inch, 2 inch, 4 inch to 12 inch check valves are commonly used in piping systems, water pumps, compressors, and other fluid handling equipment to prevent reverse flow, backpressure, and water hammer.
4 Types of Check Valves
Swing check valve: Swing type check valve has a disc or flap that swings open when the fluid flows in the correct direction and closes when the fluid flows back in the opposite direction.
Ball check valve: This ball-type check valve uses a ball that sits on a seat to allow flow in one direction and prevent flow in the opposite direction.
Wafer check valve: The wafer non-return valve is installed between two flanges and uses a disc that moves up and down to allow flow in one direction and prevent backflow.
Foot valve: A foot valve for water pump is used to prevent backflow and maintain the prime in a pump suction line. It is typically installed at the bottom of a suction pipe or wellbore.
Materials of Non-Return Valves
Stainless steel: This is a popular material for check valves due to its corrosion resistance, durability, and strength.
Brass: Brass is commonly used for non-return valves in plumbing applications due to its corrosion resistance, ductility, and machinability.
PVC: PVC check valves are used in applications where chemical resistance is required, such as in water treatment and chemical processing. UPVC and CPVC are both thermoplastic materials that are derived from PVC through chemical modifications.
Cast iron: Cast iron non-return valves are used in applications where strength and durability are required, such as in industrial and municipal applications.
How to Choose the Right NRV Valve?
Choosing the right check valve for your application can be critical to ensure the efficient and reliable operation of your system. Here are some key factors to consider when selecting a check valve:
Application: Consider the type of fluid, flow rate, pressure, and temperature of the system. The check valve should be able to handle these conditions without causing excessive pressure drop, cavitation, or erosion.
Type of check valve: Select the appropriate type of nrv valve based on the flow direction, installation orientation, and system requirements. For example, a swing check valve is suitable for horizontal installations, while a lift check valve is better suited for vertical installations.
Material: Choose the material of the check valve based on the properties of the fluid being transported, environmental conditions, and compatibility with other materials in the system. Consider factors such as corrosion resistance, chemical compatibility, and durability.
Size: Select the appropriate size of the check valve based on the pipe diameter and flow rate of the system. 1", 1/2"..2".. 4" to 12" check valves are available on ATO.com.
End connections: Choose the appropriate end connections of the nrv valve based on the type of piping system and the connection method (flanged, threaded, or welded).
Maintenance and repair: Consider the ease of maintenance and repair of the check valve, including accessibility, availability of spare parts, and repair services.
What is a Non-Return Valve Used for?
1/2" to 12" non-return valve is used to allow the flow of fluids or gases in one direction only while preventing backflow in the opposite direction. Non-return valves are commonly used in piping systems to prevent damage to equipment, contamination of fluids or gases, and safety hazards. They are used in a wide range of applications, including:
Pump discharge lines: Non-return valves are often used in pump discharge lines to prevent the backflow of fluid into the pump when it is turned off or when the system pressure drops below the pump discharge pressure.
Steam systems: Non-return valves are commonly used in steam systems to prevent the backflow of condensate into the steam lines. This can help to prevent damage to steam equipment and ensure the efficient operation of the system.
Water supply lines: Non-return valves are used in water supply lines to prevent the backflow of contaminated water into the clean water supply. This is especially important in industrial and municipal water systems.
HVAC systems: Non-return valves are commonly used in heating, ventilation, and air conditioning (HVAC) systems to prevent the backflow of air or water into the system. This can help to ensure the proper operation of the system and prevent damage to HVAC equipment.
Chemical processing: Non-return valves are often used in chemical processing applications to prevent the backflow of hazardous chemicals into the system. This can help to ensure worker safety and prevent environmental contamination.