- 型号：
- Q21F
- 规格：
- 齐全
::d))B Advantages of high-pressure ball valves: 1. Small fluid resistance, and full-bore ball valves have basically no flow resistance. , Simple structure, small size and light weight. , tight and reliable. It has two sealing surfaces, and the sealing surface materials of ball valves currently use various plastics, which have good sealing properties and can achieve complete sealing. It has also been widely used in vacuum systems. , easy to operate, quick to open and close, just turn d from fully open to fully closed, convenient for long-distance control. , Easy to maintain, the ball valve has a simple structure, the sealing ring is generally movable, and it is relatively easy to disassemble and replace. . When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes, it will not cause erosion of the valve sealing surface. , Wide application range, diameter ranging from a few millimeters to several meters, and can be applied from high vacuum to high pressure. . Since the ball valve has wiping properties during the opening and closing process, it can be used in media with suspended solid particles. High-pressure welded ball valve performance specifications: Pressure: Connection method: ferrule, thread, welding, union, flange Pipe outer diameter: D~D Applicable temperature: ℃~℃ Practical medium: gas, oil, water Manufacturing material: carbon steel , Stainless steel high-pressure welded ball valve product description: Toyama ball valves usually use rubber, nylon and polytetrafluoroethylene as valve seat sealing ring materials, so its operating temperature is limited by the valve seat sealing ring material. The cut-off function of the ball valve is accomplished by the metal balls pressing against each other between the plastic valve seats under the action of the medium (floating ball valve). Under the action of a certain contact pressure, the valve seat sealing ring will undergo elastic-plastic deformation in local areas. This deformation can compensate for the manufacturing accuracy and surface roughness of the ball and ensure the sealing performance of the ball valve. The seat sealing ring of Toyama ball valve is usually made of plastic. Therefore, when selecting the structure and performance of the ball valve, the fire resistance and fire prevention of the ball valve must be considered, especially in petroleum, chemical industry, metallurgy and other departments, where flammable and explosive media are used When using ball valves in equipment and piping systems, more attention should be paid to fire resistance and fire prevention. Usually, in two-position adjustment, strict sealing performance, mud, wear, shrinkage channel, rapid opening and closing action (/turn opening and closing), high-pressure cutoff (large pressure difference), low noise, cavitation and vaporization phenomena, and exposure to the atmosphere Ball valves are recommended for pipeline systems with small amounts of leakage, small operating torque, and small fluid resistance. Toyama ball valves are also suitable for piping systems with light structure, low pressure cutoff (small pressure difference), and corrosive media. Ball valves can also be used in cryogenic (cryogenic) devices and piping systems. In the oxygen pipeline system in the metallurgical industry, ball valves that have undergone strict degreasing treatment must be used. When the main lines in oil pipelines and gas pipelines need to be buried underground, full-bore welded ball valves must be used. When regulating performance is required, a ball valve with a special structure with a shaped opening needs to be selected. In petroleum, petrochemical industry, chemical industry, electric power, and urban construction, metal-to-metal sealing ball valves can be used in pipeline systems with operating temperatures above 10 degrees Celsius. Toyama ball valves include: floating ball valve, fixed ball valve, track ball valve, type ball valve, three-way ball valve, stainless steel ball valve, forged steel ball valve, ash discharge ball valve, sulfur-resistant ball valve, three-way ball valve, pneumatic ball valve, electric ball valve, ferrule Ball valves, welded ball valves.
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