Knife type gate valve installation and maintenance precautions

The knife gate valve is a highly efficient control device that can perform both on/off operations and signal output using components like solenoid valves and proximity switches. It also supports automatic control for continuous operation. These valves are widely used in various industries such as chemical, coal, sugar, wastewater treatment, and paper manufacturing, making them an ideal choice for sealing applications. They are particularly well-suited for flow regulation and throttling in the paper industry pipelines.
When installing and maintaining a knife gate valve, there are several important points to consider:
1. Do not use handwheels, handles, or transmission mechanisms for lifting or as a means of applying force. Avoid any impact or collision with these parts.
2. For double gate valves, ensure they are installed vertically—meaning the stem should be in a vertical position and the handwheel located at the top.
3. If the valve has a bypass valve, open it first before opening the main valve. This helps equalize the pressure difference between the inlet and outlet, reducing the force needed to open the valve.
4. Valves with a transmission mechanism should be installed according to the manufacturer's specifications outlined in the product manual.
5. If the valve is frequently used, regular lubrication is essential. It is recommended to lubricate it at least once a month to ensure smooth operation and extend its service life.
Proper installation and maintenance not only improve the performance of the knife gate valve but also help prevent unexpected failures and reduce long-term maintenance costs.

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