Selection And Maintenance Guide: Installation, Use, And Maintenance Techniques For Sanitary Butterfly Valves

The selection, installation, use and maintenance of sanitary butterfly valves in food processing, biopharmaceutical and pure water pipeline systems directly affect the sealing, cleaning and equipment service life of production lines. Many enterprises will encounter valve leakage, aging seals, incomplete cleaning, frequent malfunctions, and so on, most of these problems are not product quality problems, but due to improper selection, installation of non-standard, daily transportation dimension, etc.. Mastering scientific selection standard, correct installation process and system maintenance technology can greatly improve the cleanliness and stability of sanitary butterfly valves, reduce equipment failure rate and replacement cost, and ensure long-term compliance, efficiency and stable operation of pipeline systems.
Scientific choice is a prerequisite for long-term use of sanitary butterfly valves. Users need to choose the model accurately according to the characteristics of the medium, working temperature, pipeline pressure, production scenario, etc. Material wise, 304 stainless steel valve bodies can be used in conventional water purification and food fluids, while 316L stainless steel has strong corrosion resistance, suitable for pharmaceutical, high acidity and high precision clean working conditions, avoiding pollution and damage caused by corrosion of valve body media. Sealed material should match the production process. At room temperature, the food should be suitable for silicone sealing. The EPDM sealing material is preferred material for high temperature steam sterilization and CIP cleaning. It has the characteristics of high temperature resistance, aging resistance and deformation resistance. At the same time, choose the driving mode according to the requirement of automation. The small production line selects the manual sanitary butterfly valves, assembly line assembly line adopts pneumatic and electric butterfly valves butterfly valve, realizes the remote intelligent flow control.
Standardizing installation processes is the key to prevent leakage, deviation and seal failure. Before installation, the valve body, butterfly plate and sealing ring should be strictly checked to remove impurity, solder slag and oil stains inside the pipe, so as to avoid hard objects scratching the sealing surface and affecting the sealing accuracy. During installation, keep the valve body coaxial and centered with the pipe. Forcibly align and tighten the valve body to prevent deformation and stall valve body the butterfly plate. clamp connection should be uniformly fastened with the clasp, the force should be balanced, avoid unilateral looseness and clearance, and ensure that the interface is tightly fastened. At the same time, the valve body should be installed according to the direction of flow, prohibit reverse installation, prevent medium backflow and abnormal sealing pressure. After installation, water pressure tests should be conducted to check for leakages or blockages before they can be used.
Standardized operation can effectively extend the service life of equipment. In the course of production and operation, valve opening and closing should be gentle and uniform, strictly prohibit violent, rapid opening and closing, so as not to cause instantaneous pressure shock and seal deformation, damage butterfly plates. It is strictly forbidden to open and close valve under the condition of overpressure and overload of pipeline to prevent damage to valve body structure due to pressure overload. Operators should be familiar with the operating parameters of the equipment. It is forbidden to use the equipment under excessive temperature, pressure or working conditions, so as not to accelerate the ageing of the material and reduce sealing performance. Automatic pneumatic butterfly valves and electric butterfly valves need to be checked regularly for control signals and opening and closing strokes to prevent sealing pressure due to excessive stroke, or insufficient stroke resulting in poor sealing or minor leakage.
Daily precision operation and regular maintenance is the core guarantees of stable operation of equipment. After daily downtime, the flow channels and sealing parts of the valve body should be cleaned promptly to remove residual media, stains and impurities, keep the inside of the valve body smooth and free from fouling, and prevent bacterial growth and residual corrosion of the material. High-frequency high-temperature bactericidal acid-base cleaning line requires to check the status of gaskets weekly, timely replacement of white, hardened and slightly deformed gaskets to avoid aging and leakage. Monthly inspection and maintenance of valve stem, drive transmission components, actuators and manual valve lubrication medium filling to ensure flexible opening and closing; inspection of air access to gas source pipeline and sealed the pneumatic valve to prevent air leakage and blockage.
The prolonged closure of equipment requires proper protective maintenance, removal of residual media from pipes, cleaning and drying of valve bodies, sealing of pipeline ports to prevent dust from entering and storage in a dry and ventilated environment to avoid dampness, rust and aging of seals. At the same time, set up equipment operation and maintenance ledger, record equipment selection parameters, installation time, maintenance cycle, replacement of accessories, etc., to achieve standardization and standardized management.
In conclusion, the stable operation of sanitary butterfly valve depends on scientific selection, standard installation, correct operation and regular maintenance. A complete operation and maintenance system can not only completely avoid common faults such as pipeline leakage, pollution and lag, but also significantly extend the service life of equipment, reduce production costs and ensure stable and compliant operation of clean pipeline systems. It is an indispensable part of equipment management in cleaner production enterprises.