Air-operated valve

Air-operated valve

An air-operated valve is a type of power operated valve that uses air pressure against a piston or diaphragm to produce linear or circular movement to operate a valve. It is used to control the fluid in flow systems, such as a feedwater system, is one of the critical components that must be monitored since its operational behavior is directly related to plant safety. Air pressure helps prevent the valve from falling into the combustion chamber.

Generally speaking, an air-operated valve consists of an air actuator, a valve, and other accessories that control air pressure, and they are interconnected with air hoses, wires, springs etc.The valve body can be manufactured from the nodular cast iron. The screw nut can be made of casting aluminium brass or casting aluminium bronze. The stainless steel is widely applied to manufacture the other components. Besides, to maintain the condition of air-operated valves, it is important to identify the location where defects take place and the original cause and severity of the defects.

Moreover, an air-operated valve is suitable for most harsh chemicals, pollution control, wet processing stations, plating equipment,chemical processing and water treatment applications.