Industry new

Metal hard seal wear-resistant ball valve performance and buying skills

The ball and seat of the metal hard seal wear-resistant ball valve are completely metal-to-metal sealed. In order to ensure the reliable sealing of the wear-resistant ball valve under various temperatures and pressures, various working conditions and requirements can be used for the user. Advanced ball and seat hardening technology, including supersonic spraying, nickel-based spray welding, surface special hardening, hard alloy spray welding, etc., the surface hardness of the ball and seat can generally reach HRC60 or higher, higher than HRC74. The sealing surface material can withstand temperatures up to 540 ° C and up to 980 ° C. The bonding strength of the material can reach above 10,000 PSI, and the sealing surface material also has good wear resistance and impact resistance. Wear-resistant ball valves are suitable for use on various lines of Class 150 ~ Class 1500, PN16 ~ PN100, used to cut off or switch on the medium in the pipeline. Different materials are used, and the wear-resistant ball valve can be applied to various media such as water, steam, oil, nitric acid, acetic acid, oxidizing medium and urea. The wear-resistant ball valve is driven by manual, worm gear, pneumatic or electric. Wear-resistant ball valves are generally flanged or butt welded. The wear-resistant ball valve has advanced ball and seat hardening technology, prevents the valve from rising and falling at high temperature, excellent sealing performance, complete fireproof structure design, natural anti-static structure design, double blocking and venting function. . Ordinary metal-sealed ball valves are sealed with two independent valve seats with more leak points. Moreover, the gap around the valve seat often has the medium worn on it, or gathers at the part, which seriously affects the normal operation of the valve and easily causes the valve seat to be damaged. This series of ball valves adopts an integrated valve seat at the left end, that is, the valve seat is a part of the left valve body, forming a joint structure, reducing the leakage point, so that the integrated valve seat eliminates the leakage of the medium around the valve seat, good shear The self-cleaning function eliminates the jamming caused by dust particles. Conventional metal-sealed ball valves, the hardening of the sphere is usually chrome-plated or ion-nitrided, and the hardened layer is very thin, so the anti-wear performance of the product is poor and the service life is short. Wear-resistant series ball valve, the sealing pair uses supersonic flame spraying tungsten carbide super wear-resistant alloy, which makes it have high hardness and super wear resistance. The wear-resistant ball valve is designed and manufactured by drawing on foreign hard sealing technology. It adopts special sealing structure and has reliable sealing performance to realize zero leakage. The ball and valve seat of the pneumatic wear-resistant ball valve have a good self-cleaning function, which eliminates the jamming phenomenon caused by the dust particles bonding the valve sealing pair, and the shape still maintains the beauty of the conventional hard-sealed ball valve. The wear-resistant ball valve has a sealing pair that is treated with supersonic flame-sprayed tungsten carbide super-abrasive alloy technology. It has high hardness and super wear resistance. The hardness reaches HRC75-80, and the service life is 8 times that of the conventional hard-sealed ball valve. Suitable for special working conditions such as silicone and polysilicon projects. The ball valve is wear-resistant, corrosion-resistant, easy to start, and has a self-cleaning function, which is suitable for conveying slurry or piping system with impurity liquid. Wear-resistant ball valve standard specification design and manufacturing standards: API 6D, API 608, BS 5351, GB/T 21385 Structural length standard: ASME B 16.10, GB/T 12221 Connection flange standard: ASME B 16.5, GB, JB, HG, SH , BS, DIN, JIS and other test and inspection standards: API 598, GB/T 13927, GB/T 26480, JB/T9092, ISO 5208 How to buy the wear-resistant ball valve correctly The correct choice of wear-resistant ball valve is to ensure the wear-resistant ball valve One of the more convenient prerequisites for use in equipment and piping. After all, the life cycle and trouble-free operation of the entire wear-resistant ball valve is very important, because it determines the efficiency of the entire pipeline system. Buying a wear-resistant ball valve is a very important part of the pipeline. At present, the demand chain of wear-resistant ball valves in China is very large, which is due to its wide range of use characteristics and use. At the same time, the structure is special, and the cost of maintenance and maintenance is very small at the same time of installation. The following small series talk about the purchase steps of the wear-resistant ball valve: 1. Identify the use of your equipment in the wear-resistant ball valve, determine the basic working conditions and basic conditions of the equipment. Defining the nominal size and connection of the wear-resistant ball valve. 2. Determine the operating mode of the wear-resistant ball valve and purchase it according to the medium and basic parameters delivered. 3. Determine the geometric parameters of the selected wear-resistant ball valve, including the length of the structure, the flange connection form and the basic dimensions, as well as the height of the opening and closing gears, the number of bolt holes, the shape of the entire wear-resistant ball valve, and so on. The above is the basic purchase step of the wear-resistant ball valve, I hope to be able to help you in the purchase of valves.

PREVIOUS：What are the advantages of pneumatic componenNEXT：What should you pay attention to when install