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Performance characteristics of stainless steel Non-rising stem knife gate valve
Time:2022-10-31;

Stainless steel non-rising stem knife gate valve adopts knife disc, which has good shearing effect and is most suitable for difficult-to-control fluids such as slurry, powder, fiber, etc. It is widely used in papermaking, petrochemical, mining, drainage, food and other industries. There are a variety of valve seats to choose from, and can be equipped with electric or pneumatic actuators according to the needs of on-site control to realize the automatic operation of the valve. Knife gate valve has the advantages of small size, small flow resistance, light weight, easy installation and easy disassembly, etc. It solves the problems of ordinary gate valve, flat gate valve, ball valve, globe valve, regulating valve, butterfly valve and other valves. Difficult problems such as difficulty and large area.

The precautions and characteristics of stainless steel non-rising stem knife gate valve in use: The opening and closing part of the knife gate valve is the gate, and the direction of movement of the gate is perpendicular to the direction of the fluid. The knife gate valve can only be fully opened and fully closed, not fully closed. Regulation and throttling. In order to ensure the tightness of the sealing surface. Its working performance and installation: the concealed rod knife gate valve has the advantages of simple and compact structure, reasonable design, light-weight material, reliable sealing, light and flexible operation, small size, smooth passage, small flow resistance, light weight, easy installation and disassembly, etc. It can work normally under the working pressure of 1.0MPa-2.5MPa and the use temperature of -29 to 650. The gate of the knife gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically remove the sundries. The stainless steel gate can prevent the sealing leakage caused by corrosion.

When the stainless steel non-rising stem knife gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the gate is pressed against the valve seat on the other side according to the medium pressure to ensure the sealing of the sealing surface, which is self-sealing.

Most of the non-rising stem knife gate valves are forced to seal, that is, when the valve is closed, the gate must be forced to the valve seat by external force to ensure the tightness of the sealing surface.


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