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Check valve installation should pay attention to the top 1, do not make the check valve in the pipeline to bear the weight of large check valve should be independent support, so that the system from the impact of pressure. 2, when installing, pay attention to the direction of the flow of the medium should be consistent with the arrow direction of the body ticket. 3, vertical drop-check valve should be installed in the vertical pipe. 4, lift-level flap check valve should be installed on the level of the pipeline. This article Keywords: check valve