A specific type of valve is a non-return check valve. These valves provide a one-way flow direction through the piping system. Non-return check valves have proved to be beneficial in various applications. The main feature of these valves is that they let the fluid flow in one desired direction. However, non-return check valves can be more specified based on your needs, as they come in various types. Dual Plate Check Valves, Flanged Swing Check Valves, Lifting Type Check Valves, Nozzle Check Valves, Slanted Seat Check Valves, Tilting Disk Check Valves, and Wafer Swing Check Valves are the most known types of non-return check valves. At YasminTrading, you can easily find and choose the best project option.

What is a Non-Return Check Valve?

Referring to Grundfos, a brief description of non-return check valves is that they are backflow prevention valves. These valves only allow the fluid to flow in one direction and not backward. Liquid, gas, and steam can flow in these valves; however, they are allowed to flow in just one direction.

Applications of Non-Return Check Valves

Non-return check valves are useful in many conditions. The most common and popular applications of these valves are:
  • Using them to prevent steam from backflowing in steam distribution systems.
  • Prevent any potential damage to pumps that is caused by reverse flows.
  • Applying them protects boilers from water hammers.
  • Not allowing the backflow of water after the pressure is reduced in the water supply system.

Benefits of Non-Return Check Valves

Several different applications of non-return check valves perfectly prove them to be highly beneficial. The benefits these valves offer are:
  • Mainly reducing hazards of leakage or spillage of fluids present in the system.
  • Preventing the backflow of the fluid and impurities, reducing the risk of fluid contamination.
  • Maintaining the flow and pressure of the fluid in the entire system.
  • Making sure that the fluids flow in the only intended direction.
  • Protecting equipment and components of the system from damages caused by the backflow.

What Are the Types of Non-Return Check Valves Available at YasminTrading?

According to Process Industry, non-return check valves consist of several different types. Each of these types of fluid control valves is beneficial and essential for a specific application. Having a wide range of options between various types of high-performance check valves would boost the reliability and durability of the project or system. Here at YasminTrading, we provide you with these various types of non-return check valves for every need you have.

Dual Plate Check Valve

Dual plate check valves consist of a special dual-disc design. They are considered industrial check valves. The reason is that these valves offer effective control over fluid flow, especially in high-pressure environments, which is caused by the mechanism of dual plates opening and closing on a hinge. This type of non-return valve is specifically designed to show a strong and reliable performance.  
  • Dual check valves are used in environments where high pressure and high standards of safety are crucial.
  • These valves are built specifically to perform tough and long-lasting.
  • Like the normal non-return check valves, dual plate check valves allow fluid flow in one direction.

Flanged Swing Check Valve

Another type of non-return check valve that is commonly used in industrial applications is the flanged swing check valve. The working mechanism of these valves contains a hinged disc or flap that allows fluid to flow by swinging. This disc or flap closes afterward to prevent the backflow of the fluid. Flanged swing check valves are mainly used in systems where piping and equipment are facing the risk of damage by reverse flow or water hammer.  
  • Flanged swing check valves have bolt holes, which allow them to connect to other components in the piping system.
  • These valves come in different materials based on your project needs, such as cast iron, steel, and ductile iron.
  • Large-scale industries such as oil, gas, and chemical processing get the help of these valves as efficient fluid control is crucial.

Lifting Type Check Valve

The lifting type check valve, also known as the lift check valve, is the third major type of non-return check valve. These valves specifically prevent the reverse flow of the liquid in a piping system. The working mechanism entirely depends on gravity and media pressure. Lifting-type check valves are also industrial check valves.  
  • High pressure opens the valve and lets the fluid flow in the intended direction.
  • Any drop in the pressure will lead to the valve closing automatically.
  • Lifting-type check valves are available in different sizes and pressure ratings to meet every need.
  • These valves can be made of different materials, such as carbon steel, stainless steel, and cast iron.

Nozzle Check Valve

Nozzle check valves, like other non-return check valves, prevent reverse flow of fluids. They are mainly applied in pump systems or compressors. As the name reveals, these valves contain a nozzle. The nozzle controls the fluid flow through the valve. Nozzle check valves are mainly known for their fast response time with a high flow capacity. They are perfectly suitable for industries like gas and oil that require quick fluid control.  
  • The nozzle causes a pressure drop to prevent reverse flow through the valve.
  • The nozzle only allows the fluid to flow in the desired direction.
  • The compact design of nozzle check valves and ease of installation have made them popular.
  • Nozzle check valves are suitable for harsh operating areas for their robust construction.

Slanted Seat Check Valve

Slanted seat check valves are a type of non-return check valve that consists of a disc inside a cylindrical body. The working mechanism is a bit more complex than other types. The mentioned disc is in its place with the help of a shaft and a counter lever that rotates around a rocker axis to start the process. The valve closes when the disc contacts the valve seat.  
  • Slanted seat check valves have a compact design and need much less installation space.
  • These valves are mainly applied in systems that require quick control in a limited space.
  • Slanted seat check valves offer a long service life, providing a reliable system.
  • They are highly beneficial in applications that need low-pressure drop and high-flow capacity. This is why they are suitable for air conditioning systems and water treatment facilities.

Tilting Disk Check Valve

Tilting disk check valves are another form of non-return check valves. The working mechanism of these valves is to let fluid flow when the pressure differential across the disc goes over a certain threshold. When pressure control is required, tilting disk check valves is highly beneficial. They are known for their stable disk operation.  
  • Tilting disk check valves can prevent the disc from slamming, as this can cause damage to the surrounding pipeline.
  • These valves can be installed and used in horizontal and vertical lines.
  • Tilting disk check valves offer an easy and lightweight installation, especially in valves with larger diameters.
  • In case the valve requires any form of repair, there is no need to remove the valve from the pipeline.

Wafer Swing Check Valve

Wafer swing check valves feature a short face-to-face, which is the distance between the inlet and the outlet. It is because of this design that they are suitable for installation in limited areas and spaces. They reduce the chances of clogging. Their flanged body design enables installation between two flange faces. This is why wafer swing check valves are practical in larger-diameter valves.  
  • Wafer swing check valves share similarities with traditional swing check valves since both of them have a swinging disc that allows or blocks fluid flow.
  • These valves are generally used in industries such as water treatment, chemical processing, and HVAC systems.
  • Wafer swing check valves come in different sizes, pressure ratings, and materials.
  The table below compares the technical specifications of all different types of non-return check valves.  
Type of Valve Size Range Pressure Rating Application Material
Dual Plate Check Valve 2" - 72" 150 - 2500 High-pressure systems Cast steel, stainless steel
Flanged Swing Check Valve 2" - 48" 150 - 2500 General purpose Cast steel, ductile iron
Lifting Type Check Valve 2" - 24" 150 - 2500 Low-pressure systems Cast iron, stainless steel
Nozzle Check Valve 2" - 48" 150 - 2500 Viscous fluids Cast steel, stainless steel
Slanted Seat Check Valve 2" - 72" 150 - 2500 High velocity flows Cast steel, stainless steel
Tilting Disk Check Valve 2" - 48" 150 - 2500 Limited space Cast steel, stainless steel
Wafer Swing Check Valve 2" - 24" 150 - 2500 Compact systems Cast iron, stainless steel
 

Why Choose YasminTrading As Your Check Valve Supplier?

At YasminTrading, we try our best to help you with any question or requirement. Non-return check valves are highly beneficial in various applications. We provide you with several types of these check valves so they meet your needs. In addition to all the information we brought above, you can contact us for the help of our professionals.