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The ball valve was born in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, the ball valve has rapidly developed into a mainstream valve type in just 50 years. In Western industrialized countries, the use of ball valves has increased year by year.
Zhejiang Zhongguan Valve Co., Ltd. has various ball valve products, covering different structures and materials. Our products can be used for both ordinary water pipes and high-temperature and high-pressure industrial pipelines to meet different needs and are the first choice of customers.
How do we maintain ball valves in daily life?
The service life and maintenance-free cycle of ball valves depend on the following factors: normal working conditions, maintaining a reasonable temperature/pressure ratio, and reasonable corrosion data.
When the ball valve is in the closed state, there is still pressurized fluid in the valve body.
Before maintenance: release pipeline pressure and keep the valve in the open position; disconnect the power or gas source; remove the actuator from the bracket
Before disassembly and assembly operations, it must be confirmed that the pressure in the upstream and downstream pipelines of the ball valve has been released.
When disassembling and reassembling, care must be taken to prevent damage to the sealing surfaces of parts, especially non-metallic parts. When removing the O-ring, special tools should be used.
During assembly, the bolts on the flange must be tightened symmetrically, step by step, and evenly.
The cleaning agent should be compatible with the rubber parts, plastic parts, metal parts, and working media (such as gas) in the ball valve. When the working medium is gas, gasoline (GB484-89) can be used to clean metal parts. Clean non-metallic parts with pure water or alcohol
Non-metallic parts should be removed from the cleaning agent immediately after cleaning, and never soak for a long time.
After cleaning, the inner wall cleaning agent must be evaporated (it can be wiped with a silk cloth that is not soaked in cleaning agent) before assembly, but it must not be left for a long time, otherwise it will rust and be contaminated with dust.
New parts must also be thoroughly cleaned before assembly.
During the assembly process, metal debris, fibers, grease (except for designated purposes), dust and other impurities, foreign matter, etc. must not be allowed to contaminate, adhere to or remain on the surface of the parts or enter the inner cavity. If there is a slight leak at the packing, the stem nut must be retightened.
