The maintenance cycle of wafer butterfly valves mainly depends on their frequency of use, working environment, importance level and the recommendations of equipment manufacturers.
Frequency of use:
High frequency use: If the wafer butterfly valve is frequently switched on and off during the production process, it is recommended to perform a simple inspection every week or every two weeks and a more comprehensive maintenance every month, including checking the sealing performance, lubrication, electrical system, etc. of the valve.
Medium frequency use: For wafer butterfly valves that are switched on and off several times to more than ten or twenty times a day, a routine inspection can be performed every half a month or a month, and a comprehensive maintenance can be performed every quarter.
Low frequency use: If the wafer butterfly valve is used very infrequently, such as the number of switches per month does not exceed a few times, a routine inspection can be performed every quarter, and a comprehensive maintenance can be performed every six months or a year.
Working environment:
Harsh environment: Wafer butterfly valves in harsh working environments such as high temperature, high pressure, high corrosion, high humidity or dust require more frequent maintenance. It is generally recommended to conduct a comprehensive inspection once a month, focusing on seals, valve stems, bearings and other parts that are susceptible to environmental influences.
General environment: Wafer butterfly valves working in ordinary indoor environments or relatively mild outdoor environments can have a relatively long maintenance cycle. A routine inspection once a quarter and a comprehensive maintenance once a year usually meet the requirements.
Importance level:
Critical valves: For wafer butterfly valves in critical process flows, such as petrochemical, electric power, gas and other industries, once a failure may cause a major safety accident or serious production interruption, it is recommended to conduct a patrol inspection once a week and a comprehensive maintenance once a month, and be equipped with a complete online monitoring system.
Non-critical valves: For non-critical wafer butterfly valves that have little impact on the production process, the maintenance cycle can be appropriately relaxed. A routine inspection is performed every half a month or a month, and maintenance is performed once every six months.
Equipment manufacturer recommendations: Equipment manufacturers usually give recommended maintenance cycles and maintenance items in the product manual based on the design characteristics, material selection, applicable working conditions and other factors of the wafer butterfly valve. When formulating a maintenance plan, the manufacturer's recommendations should be used as an important reference.
Historical failure data: If a wafer butterfly valve has frequently failed in the past, such as poor sealing, motor failure, or damage to transmission components, the maintenance cycle should be shortened and the inspection and maintenance of the valve should be strengthened. For valves that have been running stably for a long time and rarely fail, the maintenance cycle can be appropriately adjusted based on the actual situation while following the basic maintenance principles.
