After the valve equipment is ready, the operator can understand and grasp the structure and function of the valve and transmission equipment, correctly identify the opening direction, opening symbol and indication signal of the valve, skillfully and accurately operate the valve and deal with various emergency faults in time and decisively. Whether the valve is operated correctly or not directly affects its service life, and is related to the stable and safe production of equipment and equipment.

手动阀门是经过手轮、手柄来操作阀门的，在石化设备中使用非常遍及，上海良工阀门山东销售提醒操作人员要注意以下几点：

Manual valves are operated by hand wheels and handles and are widely used in petrochemical equipment. Shanghai Lianggong valve Shandong sales center reminds operators to pay attention to the following points:

•阀门的敞开方向，通常是逆时针表明阀门翻开，顺时针表明阀门封闭。因而，开关阀门时要注意方向。

• the opening direction of the valve, usually counterclockwise, indicates that the valve is opened and clockwise indicates that the valve is closed. Therefore, pay attention to the direction when opening and closing the valve.

•阀门的手柄，手轮大小是依据阀门人力开关设计的。因而，只需手艺滚动阀门即可完成开关，通常不允许凭借杠杆或扳手来开关阀门。为了避免用力过猛，损坏密封面及其他零件。

• the handle and hand wheel size of the valve are designed according to the manual switch of the valve. Therefore, it is only necessary to roll the valve to complete the opening and closing, and it is usually not allowed to open and close the valve with a lever or wrench. In order to avoid damage to the sealing surface and other parts due to excessive force.

•当封闭式敞开闸阀及截止阀死点时，要反转1/4圈1/2圈，使螺纹非常好密合，避免拧得过紧，损坏阀件。

• when the closed open gate valve and stop valve reach the dead point, it is necessary to reverse 1 / 4 to 1 / 2 turn to make the thread very close and avoid over tightening and damaging the valve parts.

•不能把闸阀、截止阀做节流用，这样简单冲刷阀板及密封面，且引入振动走漏，损坏阀门。

• the gate valve and stop valve cannot be used as throttling, which simply washes the valve plate and sealing surface, introduces vibration leakage and damages the valve.

•敞开蒸汽阀门时，应缓慢敞开，扫除管道中的凝结水，避免产生水击表象。损坏阀门及管道。

• when opening the steam valve, it shall be opened slowly to remove the condensate in the pipeline to avoid water hammer. Damage to valves and pipes.

•大口径的闸阀、截止阀和蝶阀，有的设有旁通阀，其作用是平衡阀门两边压力，削减敞开力。因而敞开时，应先翻开旁通阀，再渐渐敞开阀门，关阀时，应先封闭旁通阀，再渐渐封闭主阀门。

• some large-diameter gate valves, globe valves and butterfly valves are equipped with bypass valves to balance the pressure on both sides of the valve and reduce the opening force. Therefore, when opening, open the bypass valve first, and then gradually open the valve. When closing the valve, close the bypass valve first, and then gradually close the main valve.

•某些阀门封闭后，待温度降低后，阀件缩短，密封面呈现纤细走漏表象，此时，应待阀门封闭后，再适当紧一次阀门即可。

• after some valves are closed, when the temperature decreases, the valve parts shorten and the sealing surface presents the appearance of thin leakage. At this time, the valve should be tightened appropriately after the valve is closed.

以上就是上海良工阀门山东销售给大家介绍的手动阀门的操作，了解更多可访问http://www.jnlgvf.com

The above is the manual valve operation introduced by Shanghai Lianggong valve Shandong sales center. More information can be accessed http://www.jnlgvf.com