All valves should be tight-closing and of good quality. Leaky valves will flood boiler.
所有阀门都应该关闭紧密并且质量优异。泄漏的阀门将会淹没锅炉。
Globe pattern check valves should be used in horizontal pipe runs with the stem straight up.
截止阀结构的止回阀应该用于水平管道，阀杆垂直朝上。
Check valves should be located as far away from equipment such as pumps and compressors as possible.
止回阀应该安装在距离其他设备，如泵和压缩机等，尽可能远的地方。
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