This allows our swing check valve to close completely even when installed in a horizontal pipe run with no flow.
这使得我们的旋启式止回阀无论安装在水平管道还是垂直管道上，都能够实现完全的关闭。
This allows our swing check valve to close completely even when installed in a horizontal pipe run with no flow.
这使得我们的旋启式止回阀无论安装在水平管道还是垂直管道上，都能够实现完全的关闭。
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