Prevent valve castings mould and oxidation cleaning work has to do enough to use the right cleaning agent, for example, the use of biodegradable environmental protection cleaning agent, can effectively remove the casting surface oil and impurities, while not causing corrosion of the casting material. After cleaning, should ensure that the casting no cleaning agent residue, and thorough drying process, to prevent moisture residues lead to mould and oxidation. The valve casting surface oil, impurities are clean, but also can not be corrosive, otherwise it will be a chemical reaction with the casting, but let the casting blackened after cleaning, but also rinsed, to ensure that no detergent residue, and then clean non-woven cloth or nitrogen to blow dry the casting, can not let the water stains stay on it.
Then , the storage environment is also very important to find a dry, clean place to store the valve castings, warehouse temperature and humidity should be controlled in the appropriate range, so as to avoid mouldy oxidation castings. In the transport process should also be careful, for the need for long-term storage of the valve castings, should be used in suitable anti-rust packaging, such as anti-rust bags, rust-proof paper and so on, the valve castings are well protected, can not let them be eroded by the external environment. Regular inspection of valve castings, timely detection and treatment of surface stains, rust and other impurities to prevent further deterioration. For valve castings that need lubrication, they should be lubricated in accordance with the correct methods and cycles to keep them in good working condition. However, attention should be paid to the selection of lubricants compatible with the casting material to avoid damage to the parts due to the chemical nature of the lubricant. For all types of valve castings, no matter cast iron butterfly valve, cast iron ball valve, api 600 gate valve or other should be so, in order to effectively prevent blackening!