What is a check valve?

One-way valve means that the fluid can only flow along the water inlet, but the medium at the water outlet cannot flow back, commonly known as one-way valve. Check valves are also called check valves or check valves. Used in hydraulic system to prevent oil flow from flowing backwards, or used in pneumatic system to prevent compressed air from flowing backwards. There are two kinds of check valves: straight-through type and right-angle type. Straight-through check valves are installed on threaded pipes. Right-angle check valves have three forms: threaded connection, plate connection and flange connection.

Precautions for use: When installing the check valve, special attention should be paid to the flow direction of the medium. The normal flow direction of the medium should be consistent with the direction of the arrow marked on the valve body, otherwise the normal flow of the medium will be cut off. The bottom valve should be installed at the bottom of the water pump suction pipeline. When the check valve is closed, it will generate water hammer pressure in the pipeline, which will seriously damage the valve, pipeline or equipment, especially for large-diameter pipeline or high-pressure pipeline, which should attract the attention of check valve users. Check valves are only used to open and close valves in one direction, so as to prevent the backflow of fluid media on various pipelines or equipment.