Characteristics and application of metal seated ball valve
Metal seated ball valve is a type of ball valve in which the seat is made of hard material, usually metal, to achieve high sealing performance. Compared to soft-sealed ball valves, hard-sealed ball valves have better resistance to high pressure, high temperature, and corrosion, making them suitable for more demanding conditions.
The sealing structure of hard-sealed ball valves typically adopts metal-to-metal sealing. Common materials used for hard sealing include stainless steel, alloy steel, and high-temperature alloys. The seat is usually a metal seat that directly contacts the ball, and the sealing performance is influenced by the processing quality of the seat surface and material selection.
Metal seated ball valves have the following features:
- Good sealing performance: metal seat materials can provide effective sealing to prevent media leakage.
- High pressure resistance: Due to the metal-to-metal sealing structure, metal to metal seaed ball valves can withstand higher pressures.
- Excellent high temperature and corrosion resistance: Hard-sealed materials typically have good resistance to high temperature and corrosion, making them suitable for high temperature, high pressure, and corrosive media.
- Long service life: The sealing ring of hard-sealed ball valves is made of metal, which generally has a longer lifespan compared to soft-sealed materials.
Metal seated ball valves, due to their excellent sealing performance, high pressure resistance, and good resistance to high temperature and corrosion, are widely used in pipeline systems across various industries. Here are some common applications of hard-sealed ball valves:
Petroleum and natural gas industry: Metal seated ball valves are used in the processes of petroleum and natural gas extraction, transportation, and storage, including oil wells, pipelines, and storage tanks.
Chemical industry: Metal seated ball valves are suitable for controlling and regulating various corrosive media in chemical production processes, such as acid and alkali liquids, organic solvents, and more.
Power industry: Metal seated ball valves are commonly used in the power generation industry, including thermal power plants, nuclear power plants, and gas turbine systems, for controlling the flow and pressure of media.
Metallurgical industry: Metal seated ball valves can be applied in various processes of the metallurgical industry, such as high-temperature and high-pressure equipment like blast furnaces, smelting furnaces, continuous casting, and more.
Pressure vessels and pipeline systems: Metal seated ball valves are suitable for controlling and isolating various pressure vessels and pipeline systems, including industries like petroleum and chemical, metallurgy, papermaking, food, and more.
Urban water supply and drainage systems: Metal seated ball valves are used for flow control and isolation in urban water supply and drainage systems.