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...the research and production of air sealing machine,starlike material handling equip- ment,rotary valve,and electrical air lock.It has been committed to the research and development of these products over the...
...valves 80 l/min 12 V hydraulic valve electric-hydraulic control 12V hydraulic valve is very popular product in mechanical engineering and power hydraulics. In simple words it is closed tube with two holes an...
... opening and closing time. 3 . Good sealing performance, small friction between sealing surfaces and long life. The disadvantages of globe valves are as follows: 1 . The fluid resistance is large, and the fo...