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IMPORTANCE OF PAINTING FOR INDUSTRIAL VALVES

Painting industrial valves is crucial for protecting them from corrosion, wear, and environmental damage. It enhances their durability, improves performance, and reduces maintenance costs. A proper coating ensures valves can withstand extreme conditions, extend their operational life, and maintain reliability in critical industrial processes, ultimately boosting efficiency.

REASONS OF CHOOSING BELLOWS SEALED VALVES

With the rapid development of modern industries such as chemical and nuclear industries, there is an increasing number of pipelines that are flammable, explosive, highly toxic, and contain radioactive media. Valves used on these pipelines and devices have special and strict requirements for their external leakage sealing. The use of general packing sealing devices is no longer sufficient to meet these requirements. Therefore, a valve stem sealing structure with corrugated pipes is needed. Bellows are generally connected to the flange or other parts on the valve cover using roll welding or argon arc welding.

PURPOSE OF GRINDING SEALING SURFACE OF WEDGED GATE VALVE

Grinding the wedge gate valve seat is essential to ensure a proper sealing surface between the wedge and the valve seat, preventing leaks during operation. Over time, the seating surfaces may wear or develop imperfections due to pressure, temperature, or media flow. Grinding restores the smoothness and alignment of the seats, improving the valve’s ability to seal effectively when closed. This process also helps maintain valve performance, extending its lifespan and preventing costly leaks or malfunctions. Proper grinding ensures that the valve can withstand the operating conditions without compromising the integrity of the sealing surfaces.

THE MAIN FUNCTIONS OF SHORT BLASTING FOR CASTING VALVE BODIES

The main function of shot blasting for casting valve bodies is to clean and improve the surface quality by removing impurities, scale, rust, or sand from the casting process. Shot blasting uses small steel or ceramic pellets to strike the surface, creating a smooth, uniform texture. This process enhances the surface finish, improves paint adhesion, and helps reveal any surface defects that may need further attention. Additionally, shot blasting can also induce compressive stresses in the metal, improving its resistance to corrosion and fatigue, which contributes to the overall durability and performance of the valve body.