Maintenance of ball valve

• To avoid abrasive wear of the shutter, it is not allowed to operate the ball valve with a partially open shutter. The valve must be either fully open or fully closed.
• The working medium should not contain solid impurities that could damage the polished surface of the ball. If the presence of solid particles in small amounts is possible, it is recommended to install a mesh filter before the ball valve.
• It is not allowed to use levers that extend the factory handle to operate the valve.
• To avoid hydraulic shocks, the opening and closing of the valve should be done slowly.
• The pressure and temperature at the installation site of the ball valve should not exceed the working pressure. For most valve designs, it is not allowed to operate with the simultaneous occurrence of the maximum temperature and nominal pressure.
• To avoid sticking of the shutter during operation, the ball valve should be opened and closed periodically.
• It is recommended to clean the ball valve from dust and rust every six months, and tighten the threaded connections if necessary.
• During hydraulic testing, all ball valves, except for drainage and shut-off elements, should be fully open.
• During system drainage with the risk of freezing, the ball valves should be opened and closed several times to completely remove the water. If the ball valve was closed during drainage, the remaining water in the flow section of the ball could freeze and rupture the body.
• It is not allowed to carry out repairs or maintenance on a pressurized valve without first draining the section.

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