Liquid or slurry never touches stem threads.
液体或泥浆绝对不会接触阀杆螺纹。
Position by the valve stem threads are divided into clear and dark bar bar gate valve two...
按阀杆的螺纹位置划分，可分为明杆闸阀和暗杆闸阀两种。
After the reconstruction of the tangential separator good performance, stable operation, ensure the smooth production fo stem threads.
改造后的切向分离器性能良好，运转稳定，保证了梗丝生产的顺利进行。
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