Installation instructions for different check valves

Selection: 1. Do not allow the check valve to bear weight in the pipeline. The large check valve should be independently supported so that it is not affected by the pressure generated by the piping system.

1. The installation of socket welded forged steel check valve should pay attention to the following matters:

1. Do not allow the check valve to bear weight in the pipeline. The large check valve should be independently supported so that it will not be affected by the pressure generated by the piping system.

2. During installation, pay attention to the direction of the medium flow and the direction of the arrow marked by the valve body.

3. Lifting vertical flap check valve should be installed on vertical pipeline.

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

Second, the wafer lift check valve should be installed on the horizontal pipeline.

3. Swing check valve can be installed horizontally or vertically. The valve flap of the swing check valve rotates around the rotation axis, and its fluid resistance is generally less than that of the lift check valve. It is suitable for larger diameter occasions and the installation position is not limited. It is usually installed in horizontal pipelines. Larger diameter occasions.

Fourth, large-diameter water pipes should use multi-petal check valves or large-diameter silent check valves, so that the closing time of each valve is staggered or slowly closed to reduce the damage of the water hammer.