Introduction to knowledge about Wilden Air Valve
Wilden Air Valve is a special valve used to prevent negative pressure in the pipe caused by the decompression wave in the transient process. It is usually installed at a high point where the dynamic water pressure is low when the pipeline is in normal operation, and the liquid column separation may occur during the transient flow process. Air is sucked in when the pressure in the pipe is below atmospheric pressure, and air is discharged when the pressure in the pipe rises above atmospheric pressure. During the exhaust process, the valve can be automatically closed when the liquid in the pipe fills the pipe, and the liquid is not allowed to leak into the atmosphere.
Wilden Air Valve is a respirator for pipelines and a safeguard for pipeline safety. It is also called ventilation valve and exhaust valve, but it has an inhalation function, so it is more accurate to call it an air valve. The air valve is a small-diameter air valve with a single exhaust function, also known as a micro exhaust valve; a large-diameter air valve with both exhaust and intake functions, including high-speed intake and exhaust air valves, composite air valves, etc.; Air valve with air function, also known as suction valve and vacuum break valve.
