Wafer Swing Check Valve
Body: Carbon Steel/SS304/SS316
Disc: Carbon Steel/SS304/SS316
Gasket: EPDM/Viton
O-ring: EPDM/Viton
Hook: Steel/SS304
Blocker: 8.8/SS304/SS316
Disc Bearing: 8.8/SS304/SS316
- Material:
- Body and disc: CF8M stainless steel
- Seat and body seal: FKM
- Working Temperature: -20°C to +180°C
- Maximum Working Pressure: 16 bar
- Sizes: 1 1/2″ to 12″
- Suitable for mounting between PN10/16 and ANSI150 flanges
- Can be installed horizontally or vertically with the flowing media going upwards
- Economy Wafer Swing Check Valve
| Attribute | Details |
|---|---|
| Design Standard | EN14341 |
| Connection Type | Wafer |
| Flange Standard | EN1092-1/ISO7005-1 |
| Face to Face | Dimensions EN558 Series 97 |
| Testing Standard | EN12266-1 |
| Marking Standard | EN19 |
Understanding Swing Check Valves: Essential for Reliable Flow Control
Swing check valves are critical components in piping systems, designed to prevent reverse flow and ensure smooth, uninterrupted fluid movement. These valves operate by allowing fluid to flow in one direction while automatically preventing backflow when the flow stops. This function is vital in various industrial applications, including water treatment, chemical processing, and HVAC systems.
Key Features of Swing Check Valves
Swing check valves consist of several key components, each contributing to their reliable performance. The valve body is typically made from durable materials like stainless steel, which ensures longevity and resistance to corrosion. The disc, which swings open and closed based on fluid flow, is the heart of the valve, controlling the flow rate and direction.
When fluid flows through the valve in the correct direction, the disc swings open, allowing the fluid to pass freely. However, when the flow stops or reverses, the disc swings back into place, sealing the valve and preventing reverse flow. This automatic operation makes swing check valves ideal for systems where consistent flow direction is crucial.
Horizontal and Vertical Flow Configurations
Swing check valves are versatile and can be installed in various piping configurations. They are typically used in horizontal flow applications, where the disc swings open with the flow and closes when the flow stops. However, they can also be used in vertical flow positions, provided the fluid flows upward, ensuring the disc remains open during operation.
In some cases, spring-loaded check valves are preferred for vertical installations, as the spring ensures the disc closes more quickly in the absence of flow, reducing the risk of reverse flow. This feature is particularly useful in high-pressure systems where quick response times are critical.
Preventing Water Hammer: A Key Consideration
One of the significant challenges in fluid systems is the effects of water hammer, a phenomenon caused by sudden changes in flow velocity, leading to pressure surges. Swing check valves can help mitigate this issue by ensuring a smooth closure of the valve, reducing the risk of water hammer.
However, it’s important to note that swing check valves are limited in their ability to prevent water hammer compared to other valve types, such as spring-loaded check valves. The choice of valve should consider the specific requirements of the application, including the potential for water hammer and the desired flow rate.
Material Considerations and Flow Capacity
The valve body and disc materials are crucial for the performance and longevity of swing check valves. Stainless steel is a popular choice due to its corrosion resistance and ability to withstand high pressure. In addition to material selection, the design of the valve influences its large flow capacity, ensuring it can handle significant volumes of fluid without compromising performance.
Applications and Limitations
Swing check valves are widely used in systems requiring reliable prevention of reverse flow. They are suitable for applications with horizontal flows and can be installed in both horizontal and vertical positions depending on the flow orientation. However, they may not be the best choice for systems where rapid closure is essential to prevent water hammer, as their response time is slower compared to spring-loaded options.
Conclusion: Enhancing System Reliability with Swing Check Valves
Swing check valves are an essential component in maintaining the reliability and efficiency of piping systems. By understanding their design, material options, and application suitability, you can ensure optimal performance and longevity in your installations. Whether used in water treatment, industrial processing, or HVAC systems, these valves play a critical role in preventing reverse flow and ensuring smooth operation.
For high-quality swing check valves and other industrial valve solutions, explore the full product line from Jhy Group. Browse our entire product catalog to find the right valve for your specific needs.
