Straight-lift check valve should be installed in horizontal pipelines, vertical lift check valves and foot valve is usually installed in a vertical pipeline, and the media bottom-up flow.
Swing Check Valve mounting location is wrong to limit, usually installed in horizontal piping, but can also be installed in a vertical or inclined pipeline feeding the pipeline.
When you install check valves, flow direction should pay particular attention to the media, the media should be consistent with the direction of the normal flow direction indicated by the arrow on the valve body, otherwise it will cut off the normal flow of the medium. Bottom valve should be installed in the bottom of the pump suction piping.
When the valve is closed, will produce water hammer pressure in the pipeline, will lead to serious damage to the valves, piping or equipment, especially for big mouth lines or high-voltage lines, so the choice of who should lead to a high degree of attention to the check valve .
