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What are the main reasons for the damage of the sealing surface of the high-pressure ball valve during its use? Let Dervos introduce it to you! 1. Mechanical Damage During the opening and closing process, the sealing surface will be scratched, bumped, squeezed and other damages. The atoms between the two sealing surfaces penetrate each other under the action of high pressure, resulting in ad...
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Full welded ball valve is a typical narrow gap submerged arc welding product, which involves the knowledge of materials, welding technology, automatic development of welding equipment and design of pipeline ball valve. The valve seat of full welded ball valve is composed of carbonized Teflon sealing ring and butterfly spring, so it has strong adaptability to pressure and temperature changes. Appli...
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Soft seal gate valves are usually used as industrial valves. The deformation compensation function is generated by the overall rubber coating of the gate, which achieves good sealing effect, overcomes the problems of poor sealing, water leakage and rust of general gate valves, saves installation space more effectively. Advantages of Soft Seal Gate Valve: (1) Low fluid resistance The medium c...
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The one-piece ball valve is a wide-ranging ball valve, which is a ball valve composed of an integral one-piece valve body connected with a small bore internal thread. It is commonly used in some high-pressure working conditions requiring quick opening and closing or working conditions of toxic media. The two-piece ball valve is fixed by the two-piece valve body, which is easier to disassemble than...
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The valve body, bonnet and wedge (disc) are the main parts of the valve, which directly bear the medium pressure. The materials used must comply with the provisions of "pressure and temperature rating of the valve". Common materials are as follows: 1. Grey Cast Iron Grey cast iron is suitable for water, steam, air, gas and oil media with nominal pressure PN ≤ 1.0MPa and temperature between -...
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After selecting a suitable valve, it is necessary to install, maintain and operate it correctly, so as to give full play to its efficiency. The quality of valve installation directly affects its use, so it must be paid attention to carefully. 1. Direction Many valves have directionality, such as globe valve, throttle valve, pressure relief valve, check valve, etc. If installed reversely, it will a...
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