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.

手動閥門是經過手輪、手柄來操作閥門的，在石化設備中使用非常遍及，上海良工閥門山東銷售提醒操作人員要注意以下幾點：

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:

•閥門的敞開方向，通常是逆時針表明閥門翻開，順時針表明閥門封閉。因而，開關閥門時要注意方向。

• 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.

•閥門的手柄，手輪大小是依據閥門人力開關設計的。因而，只需手藝滾動閥門即可完成開關，通常不允許憑借杠桿或扳手來開關閥門。為了避免用力過猛，損壞密封面及其他零件。

• 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.

•當封閉式敞開閘閥及截止閥至死點時，要反轉1/4圈至1/2圈，使螺紋非常好密合，避免擰得過緊，損壞閥件。

• 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.

•不能把閘閥、截止閥做節流用，這樣簡單沖刷閥板及密封面，且引入振動走漏，損壞閥門。

• 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.

•敞開蒸汽閥門時，應緩慢敞開，掃除管道中的凝結水，避免產生水擊表象。損壞閥門及管道。

• 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.

•大口徑的閘閥、截止閥和蝶閥，有的設有旁通閥，其作用是平衡閥門兩邊壓力，削減敞開力。因而敞開時，應先翻開旁通閥，再漸漸敞開閥門，關閥時，應先封閉旁通閥，再漸漸封閉主閥門。

• 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.

•某些閥門封閉后，待溫度降低后，閥件縮短，密封面呈現纖細走漏表象，此時，應待閥門封閉后，再適當緊一次閥門即可。

• 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.

以上就是上海良工閥門山東銷售給大家介紹的手動閥門的操作，了解更多可訪問http://www.kasidc.com

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