Can the Irrigation Combined Air Valve prevent water hammer in the irrigation system?

The Irrigation Combined Air Valve is designed to automatically release air from the irrigation system when it is first pressurized. As water begins to flow through the pipes, it displaces the air trapped in the system. If this air isn’t vented out, it can form air pockets that move with the water, causing unpredictable surges of pressure. These pressure fluctuations can lead to water hammer, which is a common and damaging issue in irrigation systems. The air release function of the valve allows the system to expel excess air gradually, preventing the buildup of air pockets and the subsequent risk of water hammer.

During the operation of the irrigation system, the Combined Air Valve also facilitates the intake of air during moments when water is discharged or when there is a sudden change in pressure. By ensuring a controlled intake of air, the valve prevents a vacuum from forming within the system. Without this air intake, the sudden re-pressurization of the system when water is introduced back into an empty pipe could cause a rapid and significant increase in pressure, leading to water hammer. The valve maintains a balance between air and water flow, significantly mitigating the risk of such pressure spikes.

One of the key roles of an Irrigation Combined Air Valve is to stabilize the overall pressure within the system. When the system is initially activated or deactivated, rapid changes in pressure can create the conditions for water hammer. The valve prevents this by providing a gradual release of air during startup and a controlled intake during shutdown, allowing for smoother transitions in pressure. By maintaining consistent pressure throughout system operation, the valve ensures that water hammer is minimized, thereby protecting the integrity of the piping and the connected equipment.