How to use manual valve

Manual valve is a kind of equipment that requires manual operation. Manual valve is also very good in terms of functionality, and its main function is to be able to change the path section and the direction of medium flow. It can also play a role in diversion, cut-off, adjustment, throttling, non-return, divert or overflow pressure relief, etc. If necessary, it can also pull the direction joint and drive shaft far away. Then tell us about the specific use of the manual valve, manual valve and the application of relevant content which features.

How to use manual valve

1. How to use the manual valve Many people don't know much about it. Then we need to understand the need to pay attention to the manual before using it. First of all, manual valve operation procedures and pre-operation check. Check and confirm that the valve identification to be operated is in accordance with the process work ticket and the dispatching instruction, check and confirm that the various parts of the valve body are connected and undamaged, and check the connection between the valve and the pipeline.

2. When using the operating valve, the strength used must be uniform, and the opening speed of the valve may not be too fast, otherwise it will cause the force used to damage the pipe. The opening direction of the manual valve is to turn the hand wheel counterclockwise, and to turn the hand wheel clockwise when closing. In the opening process of the wedge gate valve, the valve stem should rise with the opening of the valve. When it closes, it should keep falling with the closing of the valve. If there is any abnormality, stop the operation and immediately troubleshoot or report it.

3, then when you open the flat gate valve and ball valve, the degree displayed on the dial will open with the valve, has been extended to open when the degree of 100%. The indication of the dial during the closing process should be directed to "0" as the valve closes until the pointer returns to the "0" position. If there is any abnormality, stop the operation and immediately troubleshoot or report. When the butterfly valve is open, turn the hand wheel counterclockwise until the scale pointer points to “OPEN” on the dial. When closing, turn the hand wheel clockwise until the pointer is pointing to “CLOSE” on the dial. If there is any abnormality, stop the operation and immediately troubleshoot or report it. After the gate valve is in place, it should be turned half a buckle to make the thread tighter, so as not to over-tighten.

What are the characteristics of manual valve applications?

1. If the manual valve fluid is in a large range and the hydraulic loss remains constant, then it can be realized that the manual valve will have a fixed flow value at any opening, and the corresponding self-flow rate Adjust the valve. When it is necessary to shut off the liquid flow, the automatic valve closes directly through the manual valve. A valve acts as two valves that both regulate and shut off the flow.

2, then the main flow valve and the branch valve are all with the valve core, and the spool and the operating rod which the valve core is connected to, both of which need to perform the flow by swinging the operating rod to the axial direction of the valve column. Manual opening and closing valve. Both the main flow valve and the branch valve convert the swing of the operating rod into a linear movement of the spool, press-fit the spool to the valve seat, and have an interlocking mechanism. In this interlock mechanism, when one of the main passage valve and the branch valve is open, and the other valve is closed, the operation lever of one of the valves does not allow the swing of the operating lever of the other valve to proceed.

3, the manual valve in the structural design is relatively simple, and the cost is relatively low, is acceptable to many consumers, and the volume shape is also relatively small, but easy to carry, especially for students and office workers. Pneumatic nut fixture, including the fixed plate, moving plate and thimble, one end of the thimble fixed on the fixed plate, the other end of the thimble through the moving plate. The pneumatic cylinder and the manual valve are also included. The pneumatic cylinder is fixed on the fixed plate. The output shaft of the manual valve pneumatic cylinder is connected with the moving plate, the manual valve is arranged on the fixed plate, and the manual valve is electrically connected with the pneumatic cylinder.

The above related to the use of manual valves , and what are the characteristics of manual valve applications related content is introduced here, I hope these will help everyone. If you still don't understand where you can pay attention to more news, if you want to learn more about this news, please continue to pay attention to our website.