When it comes to piping systems, there are a wide variety of valves, each with distinct advantages and disadvantages. However, two of the most commonly used valves are the Swing and Disc check valves. While the two valves may look similar, there are some notable differences that buyers should be aware of before making a purchase. In this blog post, we will look closer at the swing check Valve vs the disc check valve to compare their pros and cons.
What is Swing Check Valve?
A Swing Check Valve is a mechanical device to prevent the reverse flow of fluids in piping systems. It consists of a poppet or disc mounted between two seats, which opens and closes with the pressure on one side of the valve. When pressure increases on one side, it pushes the poppet open against gravity, allowing fluid/gas to flow through. Gravity closes the valve when pressure decreases on one side and prevents backflow.
What is Disc Check Valve?
A disc check valve is a non-return valve used to prevent reverse flow in a piping system. It consists of a disc, or movable member, housed within the valve body and held in place by compression springs. When fluid flows through the pipe in one direction, it lifts the disc off its seat and allows free flow; when the flow reverses, the force of gravity or back pressure closes the disc against its seat and prevents return flow.
Difference Between Swing Check Valve and Disc Check Valve
Design
The swing check valve has a swinging disc that opens to allow fluid to move through the valve and closes to prevent backflow. Operating requires a certain amount of reverse flow, making it a good choice for applications where backflow is expected. On the other hand, the disc check valve has a disc that moves up and down to open and close the valve. The disc design makes it better suited for low-flow applications where a small amount of reverse flow is expected.
Durability
Both the swing and disc check valves are built to last. However, the disc check valve has the advantage of having fewer moving parts, which means it is less susceptible to wear and tear. It also tends to be more compact, making it a better choice for limited space applications.
Installation
When it comes to installation, the swing check valve is typically easier to install because it can be installed in any position. On the other hand, the disc check valve needs to be installed with a specific orientation to ensure it functions properly.
Maintenance
Both the swing and disc check valves require regular maintenance to ensure they continue to function properly. However, the swing check valve is easier to maintain because it can be easily disassembled for cleaning or repairs. On the other hand, the disc check valve can be more complicated to repair or replace because it has several parts that need to be removed to access the disc.
Cost
Finally, regarding cost, the swing check valve is generally less expensive than the disc check valve. This is because of the swing check valve’s simpler design and ease of installation. The disc check valve tends to be slightly more expensive, but its durability and low maintenance needs make it a good investment in the long term.
Conclusion:
After comparing the swing check valve vs the disc check valve, it is clear that both have advantages and disadvantages. The swing check valve is ideal for applications where backflow is expected, while the disc check valve is better suited for low-flow applications. The swing check valve is also easier to install and maintain, while the disc check valve is more durable and requires less maintenance. Ultimately, the choice between the two valves will depend on the buyer’s specific needs, but it is important to understand the differences between them before making a decision.
The post Swing Check Valve vs Disc Check Valve – What’s the Difference appeared first on ThePipingMart Blog.
