What is high temperature gate valve
High temperature gate valve is a kind of valve specially designed to work in high temperature environment, mainly used to control the flow of media. The following is a detailed introduction about high temperature gate valve:
1. Definition and working principle
High-temperature gate valve opening and closing member is the gate, gate movement direction perpendicular to the direction of the fluid, the gate valve can only be fully open and fully closed, can not be adjusted and throttling. Gate has two sealing surfaces, usually forming a wedge, the wedge angle varies with the valve parameters.
2. Material selection
High temperature gate valve manufacturing materials need to have good high temperature strength, corrosion resistance and wear resistance. Commonly used materials include stainless steel, carbon steel, alloy steel and so on. In particular, 316L stainless steel, due to its excellent high temperature and corrosion resistance, is suitable for chloride-containing media, effectively extending the service life of the valve.
3. Application and advantages
The application of high temperature gate valve in the chemical industry is particularly prominent, with the following advantages:
High temperature performance: the chemical industry often need to deal with high temperature and high pressure media, high temperature gate valve using special materials and structural design, has a good high temperature performance, can be in high temperature working conditions and stable operation.
Corrosion resistance: chemical medium is often corrosive, high temperature gate valve using stainless steel and other materials can effectively resist the corrosion of the medium, to ensure the long-term use of the valve.
Sealing performance: high-temperature gate valve with carbide sealing surface with precision grinding process, even in the long-term high temperature and high pressure state can maintain zero leakage.
Fluid resistance is small: the gate valve fluid does not change the direction of flow, when the gate valve is fully open resistance coefficient is almost the smallest of all valves, which helps to reduce energy consumption and improve the efficiency of fluid transmission.
High structural strength: high-temperature gate valve body using precision casting, the precise geometry of the valve body without any finishing inside the valve to ensure the sealing of the valve.
Automation control: high temperature gate valve is often equipped with pneumatic or electric actuators, remote and automated control can be achieved to improve the convenience and safety of operation.
Easy maintenance: high-temperature gate valve design takes into account the convenience of maintenance, such as the use of easy-to-replace seals and removable structure, reducing maintenance costs and time.
