isolating non-return valve
... motorized non-return valve 电动止回阀 isolating non-return valve 隔离止回阀 inlet non-return valve 入口止回阀 ...
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应该为任何管道提供过压保护，包括液体产品可能被隔离阀堵在里面的蒸发器回路、止回阀或其它系统组件。
Overpressure protection should be provided on any lines, including the vaporizer circuit, in which liquid product can be trapped by isolation valves, check valves, or other system components.
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