Knife gate valve, also known as knife gate valve, knife gate gate valve, slurry valve, and mud valve, has a gate as its opening and closing component. The direction of movement of the gate is perpendicular to the direction of the fluid, and the medium is cut off by a blade shaped gate that can cut through fiber material. The gate has two sealing surfaces, and the two sealing surfaces of commonly used gate valves form a wedge shape. The wedge angle varies depending on the valve parameters.
Usually 5 °, the gate plate of the wedge knife type gate valve can be made into a whole, called a rigid gate plate; It can also be made into a gate that can undergo slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate. The valve body of the knife gate valve actually does not have a chamber.
The gate rises and falls in the guide groove on the side face, and is tightly pressed onto the valve seat by the bottom lug. If high medium sealing is required, an O-ring sealing valve seat can be selected to achieve bidirectional sealing. Knife gate valves have small device space, low working pressure, and are not easy to accumulate debris. Stainless steel knife gate valve manufacturers must inspect the valve chamber and sealing surface before installing the knife gate valve, and do not allow dirt or sand particles to adhere.
All connecting bolts should be tightened evenly; The inspection of the packing area requires compression, ensuring both the sealing of the packing and the flexibility of the gate opening; Before installing the valve, it is necessary for users to calibrate the valve model, connect the size, and pay attention to the flow direction of the medium to ensure consistency with the valve requirements; When users install valves, it is necessary to reserve the necessary space for valve actuation.