The opening and closing parts rely on the flow and force of the medium to open or close by themselves, so as to prevent the medium from flowing backwards. Check valves belong to the automatic valve category, which are mainly used on pipelines where the medium flows in one direction, and only allow the medium to flow in one direction to prevent accidents.

Attention should be paid to the following matters in the installation of check valves

1. Do not make the check valve bear weight in the pipeline, and the large check valve should be supported independently so that it is not affected by the pressure generated by the pipeline.

2. When installing, pay attention to the direction of the medium flow should be consistent with the direction of the arrow marked on the valve body.

3. The lifting horizontal flap check valve should be installed on the horizontal pipeline.