How to Use a Ball Valve Lockout Device

 Proper use and maintenance of a Ball Valve Lockout are essential to ensure safe isolation during industrial operations. The following guidelines explain how to correctly handle, clean, and assemble components when working with a ball valve and its lockout device.

1. Before disassembly, make sure the upstream and downstream pipelines of the ball valve are completely depressurized.

2. After cleaning non-metallic components, remove them from the cleaning solution immediately. Avoid prolonged soaking.

3. When assembling the flange, bolts must be tightened symmetrically, gradually, and evenly.

4. Choose a cleaning solution that is compatible with the valve’s rubber, plastic, and metal components, as well as the working medium. For gas applications, gasoline (GB484-89) may be used for cleaning metal parts, while pure water or alcohol is recommended for non-metallic components.

5. All disassembled parts of the ball valve can be cleaned by immersion. For non-metallic parts or metal pieces that cannot be removed, use a clean, lint-free cloth dipped in cleaning solution to wipe them. Ensure that all grease, dirt, adhesives, and dust are completely removed.

6. During disassembly, take care not to damage the sealing surfaces, especially non-metallic ones. Special tools should be used when removing O-rings.

7. After cleaning, allow the cleaning agent on the surfaces to fully evaporate before reassembly. Wipe with a clean cloth if needed. Do not leave cleaned components exposed for too long to avoid rust or dust contamination.

8. New components should also be cleaned before assembly.

9. Apply lubricant compatible with the valve’s metal materials, rubber parts, plastic components, and working medium. For gas service, specialized lubricants such as 221 grease are recommended. Apply a thin layer to the sealing groove, rubber sealing ring, and the sealing and friction surfaces of the valve stem.

10. Ensure that metal shavings, fibers, excess grease, dust, and other contaminants do not adhere to the components or enter the valve chamber during assembly of the Ball Valve Lockout system.

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