Knife gate valve

Knife gate valve

[driving mode]



Manual, sprocket, electric, pneumatic, hydraulic, bevel gear, electric hydraulic and pneumatic and hydraulic driving modes. Knife gate valve shape: rising stem and Non rising stem. Knife gate valve material: cast iron, cast steel, carbon steel, stainless steel, fluorine lining, etc. Knife gate valve seal: hard seal, soft seal, single-sided seal, double-sided seal and other materials.



With the advantages of small volume, small flow resistance, light weight, easy installation and disassembly, the ultra-thin knife gate valve completely solves the difficult problems of large flow resistance, heavy weight, difficult installation and large floor area of ordinary gate valve, flat gate valve, ball valve, stop valve, regulating valve, butterfly valve and other valves. After the appearance of knife gate valve, a large number of general cut-off valves and regulating valves have been replaced by it. Today, the world's largest use of knife gate valves is the United States and Japan.




[product performance]



1. The valve control can be used for local and remote control, and can also realize remote position display and remote centralized control according to the requirements of users.



2. Light weight: the body is made of carbon steel, which is about 20%-30% lighter than the traditional gate valve, and is convenient for installation and maintenance.



3. The use of this valve can improve the closing and sealing performance of the transmission pipeline system, prevent leakage to the greatest extent, and play a positive role in improving production efficiency and protecting the environment.



4. The sealing surface is made of high wear-resistant and corrosion-resistant ceramic materials, and the inlay technology is adopted, which has high corrosion resistance and good wear resistance, so that the valve has a long service life and the cost performance ratio is 10 times higher than that of ordinary valves.




[product features]



1. The lifting ram sealing surface can scrape away the adhesion on the sealing surface and automatically clean up debris.



2. Stainless steel RAM can prevent seal leakage caused by corrosion.



3. The hard all gold sealing surface can ensure the sealing wear resistance and requirements.



4. There is no groove on the sealing surface of the valve body, which does not produce deposits, and can ensure flexible opening.



5. The short structure length can save raw materials, installation space and effectively support the strength of the pipeline.



6. The scientific design of the upper seal stuffing box makes the upper seal safe, effective and durable.



7. The triangular support saves raw materials and ensures the required mechanical properties.



8. The guide block on the valve body makes the ram move correctly, and the four extrusion blocks ensure the effective sealing of the ram.



9. The stiffener of the valve body is designed to improve the strength of the valve body.



10. The stainless steel valve rod is durable, and the stud bolts make the opening and closing faster.



11. Drive mechanism can be selected at will.



12. With a diameter of more than 150 and a fully enclosed structure, it can more effectively open and prevent leakage.



13. Fluororubber sealing surface can achieve sealing effect and improve service temperature.



14. The rubber sealing surface is directly vulcanized in the valve body and will not fall off.




[installation and operation instructions]



1. Before installing the knife gate valve, check the valve cavity, sealing surface and other parts, and no dirt or sand is allowed to adhere;



2. Bolts at all connecting parts shall be tightened evenly;



3. Check that the packing part is required to be compacted, which not only ensures the tightness of the packing, but also ensures that the ram can be opened flexibly;



4. Before installing the valve, the user must check the valve model, connection size and pay attention to the medium flow direction to ensure the consistency with the valve requirements;



5. When installing the valve, the user must reserve the necessary space for valve driving;



6. The wiring of the driving device must be carried out according to the circuit diagram;



7. The knife gate valve must be maintained regularly, and it is not allowed to collide and squeeze at will, so as not to affect the sealing.




[use and maintenance]



1. Handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.



2. The double gate valve shall be installed vertically (i.e. the valve stem is in the vertical position and the handwheel is on the top).



3. Before opening the gate valve with bypass valve, open the bypass valve (to balance the pressure difference between the inlet and outlet and reduce the opening force).



4. The gate valve with transmission mechanism shall be installed according to the provisions of the product operation manual.



5. If the valve is often opened and closed, lubricate it at least once a month.