An inlet automatic return valve is a type of valve used to prevent the backflow of liquids. It is composed of valve body, valve core, valve seat, etc. The spool is located inside the valve body and is sealed to the body by the seat. When liquid flows from one side of the valve body, the spool is pushed up by the liquid pressure and opens the valve. When the liquid flows out of the other side of the valve body, the spool is pressed down by the liquid pressure, closing the valve.
The imported automatic return valve is mainly used in the following occasions:
Prevent backflow of liquids from contaminating or damaging equipment. For example, in a water treatment system, an inlet automatic return valve prevents the backflow of wastewater into the water network.
Prevent waste due to backflow of liquids. For example, in a hot water system, an inlet automatic return valve prevents hot water from backflowing into the cold water network.
Prevent the backflow of liquids from causing safety hazards. For example, in oil and gas pipelines, an inlet automatic return valve prevents oil and gas from backflowing.
According to the working principle, imported automatic return valves are divided into float type, spring type, magnetic type and other types. The float type automatic return valve controls the valve switch according to the rise or fall of the float. The spring-loaded automatic return valve is based on the expansion and contraction of the spring to control the valve switch. The magnetic automatic return valve is controlled by magnetic suction or magnetic repulsion to control the valve opening and closing.
The selection of the imported automatic return valve should be considered according to the following factors:
Working pressure: The working pressure of the inlet automatic return valve should be greater than or equal to the maximum working pressure of the system.
Flow rate: The flow rate of the inlet automatic return valve should meet the flow requirements of the system.
Medium: The inlet automatic return valve should withstand the corrosiveness of the system medium.
The imported automatic return valve is a commonly used valve in the pipeline system, which has the advantages of simple structure, easy use and high reliability. When selecting the model, the appropriate product should be selected according to the actual needs.