Thread Content
The butterfly valve is a valve with a wide range of applications; it is used in many industries such as water supply and drainage, chemicals, petroleum, power generation, healthcare, food processing, and environmental protection. A common issue that arises when using butterfly valves is leakage at the sealing surfaces. Below, we will analyze the causes of such leakage and the methods to address it. Reason 1: Aging and wear of the rubber seal ； Preventive measures and troubleshooting methods: Regular inspection and replacement. Reason 2: The medium flow direction is incorrect ； Preventive measures and troubleshooting methods: Valves should be installed in accordance with the flow direction indicated by the arrows. Reason 3: The sealing surface compression ring is loose or damaged ； Preventive measures and troubleshooting methods: Before installation, check whether the compression ring is properly assembled, and conduct regular inspections and replacements. Reason 4: The sealing surfaces do not fit tightly ； Preventive measures and troubleshooting methods: Improve manufacturing quality and conduct pressure testing before use. Reason 5: Loosening of the valve stem and butterfly disc, causing leakage at the sealing surface ； Preventive measures and troubleshooting methods: Improve the strength of the connection between the valve stem and the butterfly disc, and conduct regular inspections.