When installing the check valve, pay special attention to the flow
direction of the medium, the normal flow direction of the medium should
be consistent with the direction of the arrow indicated on the valve
body, otherwise it will cut off the normal flow of the medium. knife gate valves should be installed in the horizontal pipeline, the bottom valve should be installed at the bottom of the pump suction pipe.
Notes for lifting check valve installation
1. Do not allow the check valve to bear weight in the pipeline. Large check valves should be supported independently from the pressure generated by the pipeline system.
2. Pay attention that the direction of medium flow should be consistent with the arrow marked on the valve body during installation.
3. Lift vertical disc check valves shall be installed in vertical pipes.
4. Elevating horizontal disc check valves shall be installed in horizontal pipelines.
When the lift check valve is closed, it will generate water hammer pressure in the pipeline, which will lead to the damage of the valve, pipeline or equipment, especially for the big mouth pipeline or high pressure pipeline, so it should cause the high attention of check valve selectors.