Knife gate valve
一. Product overview
Knife gate valve, also known as knife gate valve, knife-shaped slurry valve, its opening and closing part is a gate, the direction of movement of the gate is perpendicular to the direction of the fluid, and the knife-edge gate that can cut fiber materials is used to cut off the medium. The gate has Two sealing surfaces, the two sealing surfaces of the most commonly used mode gate valve form a wedge. The wedge angle varies with valve parameters, usually 50. The gate of the wedge knife gate valve can be made into a whole, called a rigid gate. ; It can also be made into a gate that can produce slight deformation to improve its manufacturability and compensate for the deviation of the angle of the sealing surface during the processing. This kind of gate is called an elastic gate. There is no cavity in the valve body. The gate is raised and lowered in the side guide groove and pressed against the valve seat by the lugs at the bottom. If a higher medium tightness is required, an O-shaped sealing valve seat can be used. Two-way sealing. Knife gate valve has a small installation space, low working pressure, is not easy to accumulate debris, and the price is low.
When the knife gate valve is closed, the sealing surface can only rely on the medium pressure to seal, that is, rely on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. The gate valve adopts forced sealing, that is, when the valve is closed, the gate must be forced to the valve seat by external force to ensure the sealing performance of the sealing surface. This type of valve should generally be installed horizontally in the pipeline.
2. Product performance characteristics
1. The lifting gate sealing surface can scrape off the adhesives on the sealing surface and automatically clean up debris.
2. The stainless steel gate can prevent seal leakage caused by corrosion.
3. The hard all-gold sealing surface can ensure the wear resistance and requirements of the seal.
4. There is no groove on the sealing surface of the valve body, and no accumulation is generated, which can ensure flexible opening.
5. Short structure and short length, which can save raw materials, install space and effectively support the strength of the pipeline.
3. Product specifications
Fourth, product connection size