What Are The Reasons For Leakage Of Large-diameter Sanitary Butterfly Valves?
Sanitary Butterfly Valve adopts a top-mounted structure, which reduces the connecting bolts of the valve body itself under high pressure and large diameter conditions, enhances the reliability of the valve and can overcome the influence of the system's deadweight on the normal operation of the valve. So do you know what are the reasons for the leakage of large-diameter sanitary butterfly valves?
Quality problems of large-diameter sanitary butterfly valves themselves: When analyzing the problems of large-diameter butterfly valves, we have to mention the quality problems of the valves themselves, especially the valves produced by some small manufacturers are prone to such phenomena. The anti-corrosion layer of the gate plate and the gate body falls off or the anti-corrosion layer is thin, causing the gate body and the gate plate to rust, which can be as thick as 30-50 mm, causing the gate plate to be unable to close or the sealing strip on the gate body to be damaged by rust blocks falling off, causing the valve to be loose. The sealing rubber ring has quality defects, is not installed firmly or is too thin, causing the sealing rubber ring to fall off during the gate movement process.
The hydraulic reason for the operation of large-diameter sanitary butterfly valves is that the pressure of large-diameter pipe networks is generally above 30 meters, and the butterfly valve has to withstand greater pressure during the opening and closing process. The sudden movement changes the state of the water flow. The butterfly valve gradually opens from the closed state to form a gap. The shear force generated by the water flow acts on the gate plate, cutting the edge of the gate plate. Multiple actions may cause the rubber ring to fall off or break.
The main reasons for the leakage of large-diameter sanitary butterfly valves are those introduced above. We all need to understand these reasons for our butterfly valves. The correct method of operating and using our butterfly valves is what we all need.
