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HD-SCV019
HAIDE
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| Technical Parameters
Sanitary check valve is a type of valve used to prevent medium backflow, widely used in industries with high hygiene requirements such as food, pharmaceuticals, and biotechnology. The following are maintenance methods for sanitary check valves:
Appearance inspection: Regularly check the surface of the valve for corrosion, scratches, cracks, and other damages. If corrosion is found on the surface, it should be cleaned and coated with anti-corrosion coating in a timely manner; For scratches and cracks, it is necessary to determine whether valve replacement is necessary based on their severity, as these damages may cause medium leakage or bacterial growth, affecting hygiene standards.
Leakage inspection: During the operation of the valve, check whether there is any medium leakage at the connection of the valve body, valve cover, and valve stem packing. It can be determined by observing whether there is a sound of liquid dripping or gas leakage. Once a leak is detected, the machine should be stopped immediately for inspection, which may be caused by aging of the packing, damage to the sealing surface, or loose connecting bolts. If the filler is aging, it needs to be replaced; If the sealing surface is damaged, repair or replace the sealing components; If the bolt is loose, it needs to be tightened again.
Check the direction of medium flow: Ensure that the medium always flows in the direction specified by the valve. Sanitary check valves are one-way valves, and if the medium flows in the opposite direction, it may cause valve damage or malfunction. It is possible to remind operators to pay attention to the flow direction of the medium by setting flow direction signs on the pipeline or marking the flow direction on the valve.
Cleaning: Regularly disassemble the valve for cleaning based on the nature and frequency of use of the medium. For industries such as food and pharmaceuticals, it is generally required to clean once a week or every two weeks. Thoroughly clean the valve body, valve core, valve seat and other components using specialized cleaning agents and soft brushes to remove residual media, dirt and bacteria. After cleaning, rinse thoroughly with clean water to ensure there are no residual cleaning agents. Then, air dry in a well ventilated area or blow dry with clean compressed air to avoid bacterial growth or component rust caused by residual moisture.
Lubrication: Regularly add food grade lubricating oil or grease to the moving parts of the valve, such as the valve stem and valve core. Lubrication can reduce friction between components, extend the service life of valves, and ensure flexible valve operation. But it is important to choose the appropriate lubricant and avoid using lubricants containing harmful substances to prevent contamination of the medium.
Seal inspection and replacement: Regularly check the wear of seals. Seals are key components of sanitary check valves, and their performance directly affects the sealing effect of the valve. If any signs of wear, deformation, aging, etc. are found on the sealing components, they should be replaced in a timely manner. When replacing seals, ensure that the specifications and materials of the new seals meet the requirements and are installed correctly to ensure the sealing performance of the valve.
Spring inspection and replacement: For sanitary check valves with springs, it is necessary to regularly check whether the elasticity of the spring is normal. The weakened elasticity of the spring can affect the opening and closing pressure of the valve, which may cause the valve to malfunction. If the spring elasticity is found to be insufficient or damaged, it should be replaced in a timely manner.
| Technical Parameters
Sanitary check valve is a type of valve used to prevent medium backflow, widely used in industries with high hygiene requirements such as food, pharmaceuticals, and biotechnology. The following are maintenance methods for sanitary check valves:
Appearance inspection: Regularly check the surface of the valve for corrosion, scratches, cracks, and other damages. If corrosion is found on the surface, it should be cleaned and coated with anti-corrosion coating in a timely manner; For scratches and cracks, it is necessary to determine whether valve replacement is necessary based on their severity, as these damages may cause medium leakage or bacterial growth, affecting hygiene standards.
Leakage inspection: During the operation of the valve, check whether there is any medium leakage at the connection of the valve body, valve cover, and valve stem packing. It can be determined by observing whether there is a sound of liquid dripping or gas leakage. Once a leak is detected, the machine should be stopped immediately for inspection, which may be caused by aging of the packing, damage to the sealing surface, or loose connecting bolts. If the filler is aging, it needs to be replaced; If the sealing surface is damaged, repair or replace the sealing components; If the bolt is loose, it needs to be tightened again.
Check the direction of medium flow: Ensure that the medium always flows in the direction specified by the valve. Sanitary check valves are one-way valves, and if the medium flows in the opposite direction, it may cause valve damage or malfunction. It is possible to remind operators to pay attention to the flow direction of the medium by setting flow direction signs on the pipeline or marking the flow direction on the valve.
Cleaning: Regularly disassemble the valve for cleaning based on the nature and frequency of use of the medium. For industries such as food and pharmaceuticals, it is generally required to clean once a week or every two weeks. Thoroughly clean the valve body, valve core, valve seat and other components using specialized cleaning agents and soft brushes to remove residual media, dirt and bacteria. After cleaning, rinse thoroughly with clean water to ensure there are no residual cleaning agents. Then, air dry in a well ventilated area or blow dry with clean compressed air to avoid bacterial growth or component rust caused by residual moisture.
Lubrication: Regularly add food grade lubricating oil or grease to the moving parts of the valve, such as the valve stem and valve core. Lubrication can reduce friction between components, extend the service life of valves, and ensure flexible valve operation. But it is important to choose the appropriate lubricant and avoid using lubricants containing harmful substances to prevent contamination of the medium.
Seal inspection and replacement: Regularly check the wear of seals. Seals are key components of sanitary check valves, and their performance directly affects the sealing effect of the valve. If any signs of wear, deformation, aging, etc. are found on the sealing components, they should be replaced in a timely manner. When replacing seals, ensure that the specifications and materials of the new seals meet the requirements and are installed correctly to ensure the sealing performance of the valve.
Spring inspection and replacement: For sanitary check valves with springs, it is necessary to regularly check whether the elasticity of the spring is normal. The weakened elasticity of the spring can affect the opening and closing pressure of the valve, which may cause the valve to malfunction. If the spring elasticity is found to be insufficient or damaged, it should be replaced in a timely manner.
