Cryogenic trunnion ball valve is a special type of ball valve designed to operate at extremely low temperatures, usually below -73°C (or -100°F), and is often used to handle liquefied gases.
1. Main Applications
Oil and Gas
Cryogenic trunnion ball valves are widely used in the oil and gas industry, especially in the storage, transportation and handling of liquefied natural gas (LNG). Its excellent low-temperature sealing performance and corrosion resistance ensure the safe operation of the system.
Power Industry
In the power industry, cryogenic trunnion ball valves can be used to control the flow of cryogenic coolants and adjust the pressure of the cooling system to ensure the stable operation of power generation equipment.
Refining Industry
In the refining process, cryogenic trunnion ball valves can be used to control the flow of various cryogenic liquids and gases, such as liquid nitrogen, liquid ammonia, etc., to ensure the normal operation of the refining process.
Pharmaceutical Industry
In the pharmaceutical industry, cryogenic trunnion ball valves can be used to control fluids in cryogenic storage and transportation to ensure the quality and safety of drugs.
2. Structural features and advantages
Trunion installation design
The cryogenic trunnion ball valve adopts a trunnion installation design, that is, the ball is fixed by the trunnions (support bearings) at the top and bottom, providing stability and enabling it to withstand high pressure and high temperature.
Bidirectional sealing
Imported trunnion ball valves usually adopt a design that can seal in both directions with a fixed ball. The spring-loaded valve seat has leak-proof integrity in both low-pressure and high-pressure systems, reducing seat wear caused by sudden pressure changes.
Easy to operate
The cryogenic trunnion ball valve is opened or closed by rotating the ball 90°. It has the characteristics of short stroke and rapid opening and closing, and is relatively easy to operate.
Strong corrosion resistance
The cryogenic trunnion ball valve is specially treated at low temperature, and low-temperature alloy steel or stainless steel is selected as the main material to ensure its corrosion resistance and sealing performance under low-temperature conditions.
3. Expansion of application fields
With the continuous advancement of technology and the continuous expansion of the market, the performance of cryogenic trunnion ball valves will continue to improve, and the application field will become more extensive. For example, in the fields of air separation equipment, petrochemical tail gas separation equipment, etc., cryogenic trunnion ball valves will also play an important role.
