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The imported pneumatic gate valve has a pneumatic actuator (double-layer cylinder with buffer mechanism) and a manual and protective mechanism (manual and self-locking pneumatic
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Low bracket rising stem gate valve with manual changeover device). Due to the double-layer cylinder structure of this valve, the lifting force is doubled compared with the single-cylinder pneumatic gate valve. This fundamentally solves the problem that some valve bodies of single-cylinder pneumatic gate valves are wedged and cannot be opened. Moreover, because the valve has a buffer mechanism, it can effectively decelerate and reduce the wear of the valve plate car sealing surface and the valve body sealing surface caused by the downward impact of the piston when closing the valve, and can also avoid the phenomenon of the gate plate getting stuck.
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Imported pneumatic gate valve
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It is mainly composed of flange cast steel gate valve and pneumatic actuator. It uses the actuator to compress air. It is an automatic control valve driven by air and has two modes of air opening and air closing. The pneumatic flange gate valve can be equipped with an electric or pneumatic transmitter to send valve switching status information to achieve remote control, centralized control and automatic control. The flange pneumatic cast steel gate valve adopts a double-layer cylinder structure with a buffer mechanism. Compared with the single-cylinder pneumatic gate valve, the lifting force is doubled, which can effectively decelerate the valve plate and reduce the impact caused by the downward impact of the piston when closing the valve. The wear of the valve body sealing surface can also prevent the gate from getting stuck.<
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- Import Pneumatic gate valve performance specifications:
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-Low pressure sealing test:<
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-Protection level: outdoor type and explosion-proof type<
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-Advantages of imported pneumatic gate valve:<
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The valve stem and surface have been nitrided and have good corrosion resistance, scratch resistance and wear resistance.<
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, various piping methods can be used The flange and flange sealing surface forms meet various working conditions and user requirements.<
It adopts a wedge-type elastic gate structure with a large diameter thrust bearing to reduce friction and is equipped with an impact manual opening and closing for easy operation.<< br/>r
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The gate plate and valve seat are wear-resistant, high-temperature resistant, corrosion-resistant and scratch-resistant, and have a long service life. <
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The valve body materials are complete in variety, packing and gaskets can be reasonably selected according to actual working conditions or user requirements, and can be applied to various pressures and temperatures. and medium conditions. <
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-Principle of imported pneumatic gate valve
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-The upper part of the cylinder head is equipped with a pneumatic<
manual conversion device. Lift the conversion handle clockwise to <
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The positioning hole positioning gate valve is in pneumatic operation state; otherwise, lift the conversion handle counterclockwise to <
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Position the gate valve at the hole for manual operation. Handles with bevel gears switch in the opposite direction. When manually operating the gate valve, the handwheel rotation direction is the same as that of an ordinary manual valve, that is, clockwise to close and counterclockwise to open. Bevel gears rotate in reverse. <
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