The advantages of knife gate valves mainly include the following aspects:
Compact structure and small space occupation: The structure of knife gate valves is relatively simple, mainly composed of valve body, valve plate and transmission device, with reasonable design and easy installation and maintenance. Its short structural length can save materials and reduce the overall weight of the pipeline system. In addition, the volume and weight of knife gate valves are relatively small, which saves installation space and is also convenient for handling and installation.
Low fluid resistance: The channel design of knife gate valves is smooth, the flow resistance is extremely small, the medium can pass "straight through without obstruction", and the pressure loss and flushing torque are minimized, which is particularly suitable for large flow occasions. After the valve plate is fully lifted, the channel in the valve body is consistent with the diameter of the pipeline, and there is no flow channel contraction, which further reduces the fluid resistance.
Strong cutting and shearing ability: The bottom of the valve plate of the knife gate valve has a knife-shaped oblique cut, which can effectively cut off the medium. It is particularly suitable for media containing soft materials such as fiber, pulp, slag, etc. to prevent medium blockage. The front edge of the gate is in the shape of a "blade", which can easily cut into and separate fibers, particles, debris, etc. when going down. It is suitable for slurries with high solid content, ore pulp, sewage and papermaking pulp, etc.
Reliable sealing: The knife gate valve uses sealing gaskets made of metal or elastic materials, and a scientific sealing stuffing box design to ensure safe, effective and durable sealing. The stainless steel gate can effectively prevent sealing leakage caused by corrosion. In addition, the upper sealing packing uses flexible PTFE, which is reliable in sealing and easy and flexible to operate. Easy operation: The valve plate of the knife gate valve moves quickly, the switch is light, and the operation is flexible, which is suitable for occasions where the flow rate is frequently adjusted. With pneumatic, electric or hydraulic actuators, remote and rapid opening and closing can be achieved, which is suitable for frequent automatic operations.
Wide range of applications: Knife gate valves can be widely used in tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electricity, shipbuilding, metallurgy, energy systems and other fields. Especially in pipelines that need to cut off or adjust solid particles or viscous media, they perform well.
