Why Is This Simple Tool So Crucial For System Safety?
September 8, 2024
source: ZECO Valve
The dual-body air valve assembly, like the one seen in the photo, is an essential component in modern water distribution networks. Often unnoticed but vitally important, these valves are installed at high points along water distribution pipelines to prevent air pockets from accumulating in the system. Air pockets can cause significant problems, including surges, water hammer, and even damage to the piping infrastructure. By eliminating trapped air, these valves ensure smooth water flow and help protect the system from potentially costly damage.
Dual-body air valves, sometimes referred to as combination air valves, serve two primary functions. First, they allow air to escape from the pipeline as the system is being filled with water, ensuring that air does not get trapped in high points. Second, they allow air to enter the pipeline when it is being drained, preventing a vacuum from forming that could collapse the pipe or disrupt the flow. This dual functionality is critical for maintaining system pressure and preventing issues like loss of prime, which can stop pumps from operating efficiently.
The valve in the image is an example of an above-grade installation. Typically, these assemblies are installed below ground in vaults for protection and easier access, especially in urban environments. However, in cases where the water line is buried at a shallow depth, as is sometimes necessary due to ground conditions, they are mounted above ground, as seen here. Despite being exposed, they are designed to withstand environmental conditions and continue operating reliably.
Manufacturers like Val-Matic are leaders in producing these valves, offering high-quality, durable designs that can be used in a variety of applications, from municipal water systems to industrial facilities. Their products ensure that air control in pipelines is efficient, safeguarding infrastructure and minimizing operational disruptions.
In summary, while a dual-body air valve assembly may seem like a simple piece of equipment, its role in protecting and maintaining water distribution systems is crucial. Without these valves, water distribution lines would be far more susceptible to damage from surges and pressure changes caused by trapped air, leading to costly repairs and maintenance. These small but essential components help keep water flowing smoothly, protecting both the infrastructure and the reliability of water supply systems.