High temperature ball valve is an industrial valve with a metal sealing structure, mainly used for controlling high-temperature, high-pressure and corrosive media pipelines in fields such as petroleum, chemical engineering, and metallurgy. Its working temperature can reach 980℃, and it is adapted to extreme working conditions through the full metal sealing structure.
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High temperature ball valve Working Principle
The working principle of the high-temperature ball valve mainly involves controlling the flow of fluid through the opening and closing of the valve. Specifically, when the valve is opened, the ball rotates 90 degrees along the axis of the valve, and the medium flows through the channel of the ball and passes through the valve; when the valve is closed, the ball rotates again along the axis of the valve, and the channel of the ball is isolated from the valve's perforated holes, forming a seal and thus blocking the flow of the medium.
High temperature ball valve Characteristics
High-temperature resistance performance
Valve body material: Made of high-temperature resistant alloy steel (such as 304H, 316H, 321, Inconel, etc.) or specially coated, ensuring no deformation or leakage under high temperatures.
Sealing design: Use metal seals (such as hard alloys, Stellite alloys) or high-temperature resistant elastomers (such as fluororubber, graphite) to prevent leakage of high-temperature media.
Sealing reliability
Bidirectional sealing: Part of the design enables sealing when the medium flows in either the forward or reverse direction.
Zero leakage: Through precise processing and special sealing structures, it achieves the ANSI Class VI or higher-level sealing standards.
Operational flexibility
Low-torque design: Optimizes the contact surface between the ball and the valve seat, reduces the operating torque, and extends the service life.
Quick opening and closing: A 90° rotation is sufficient to complete the switch operation. It is suitable for scenarios where frequent operation is required.
Corrosion resistance
Material selection: Select corrosion-resistant alloys based on the characteristics of the medium (such as acidity, alkalinity, sulfur content) to prevent chemical corrosion under high temperatures.
High temperature ball valve Application fields
High-temperature ball valves have been widely used in several industrial sectors, including but not limited to the following areas:
- Petroleum industry: Used to control the flow of high-temperature and high-pressure gases and liquids, such as controlling the flow of ferroalloy, gas, etc.
- Chemical industry: In chemical production, high-temperature ball valves can be used to control the flow of various acidic and alkaline media, such as sulfuric acid and hydrochloric acid.
- Metallurgical industry: In the processes of steel and non-ferrous metal smelting, high-temperature ball valves are widely used due to their high temperature resistance, corrosion resistance and wear resistance.
- Electric power industry: In thermal power plants, high-temperature ball valves can be used to control the flow of media in boilers, steam turbines and other equipment; in nuclear power plants, they can be used to control cooling water, steam and other media in the nuclear reactor.
- Aerospace industry: High-temperature ball valves can meet the requirements of controlling high-temperature, high-pressure and high-speed fluids. They have important applications in aircraft engine test stands, rocket launch pads, and other such settings.
- Pharmaceutical industry: During the production process of drugs, high-temperature ball valves can be used to control the flow and transfer of various media in equipment such as reactors and separators; during the packaging process of drugs, they can be used to control the filling and sealing of various liquid media.
- Water treatment industry: Used to control parameters such as flow rate and temperature of water quality, for example, controlling the medium flow and pressure within water treatment equipment in water treatment systems.
