1. Do not allow the check valve to bear the weight in the pipeline system. The large check valve should be supported independently so that it will not be affected by the pressure generated by the pipeline system.
2. When installing, pay attention to the direction of medium flow should be consistent with the direction of the arrow marked on the valve body.
3. The lift-type vertical flap check valve should be installed on the vertical pipeline.
4. The lift-type horizontal flap check valve should be installed on the horizontal pipeline.