The core component of the trunnion ball valve is the ball, which is fixed to the valve body through trunnions. This structural design makes the ball more stable during rotation, reducing the risk of displacement caused by vibration or impact. Compared with traditional ball valves, the trunnion ball valve has better sealing performance between the ball and the valve seat. Its sealing surface is precisely machined, enabling it to maintain a good sealing effect in high-pressure and high-temperature environments, effectively preventing the leakage of oil and gas. In addition, the valve body of the trunnion ball valve is usually made of high-strength materials, such as carbon steel, stainless steel, or alloy steel. These materials not only have good mechanical properties but can also resist the potentially corrosive components in oil and gas, extending the service life of the valve.
(I) Excellent Sealing Performance During the transportation process of oil and gas pipelines, strict control of leakage risks is required. Even a tiny leak can trigger serious safety accidents or environmental pollution. The sealing design of trunnion ball valves adopts multiple sealing measures, including a combination of metal seals and soft seals. Metal seals can withstand high pressures and temperatures, while soft seals can further improve the reliability of the seal, ensuring zero leakage under various working conditions. This excellent sealing performance enables trunnion ball valves to effectively prevent the leakage of gas or liquid at key parts of oil and gas pipelines, such as inlet and outlet ends, and branch pipeline connections, ensuring the safe operation of the pipeline system.
The oil and gas pipeline system usually needs to operate continuously for a long time. Therefore, the reliability of the valve is of crucial importance. The structural design of the trunnion ball valve makes it more stable during operation. The connection method between its ball and trunnion reduces the risk of failures caused by mechanical vibration or improper operation. At the same time, the components of the trunnion ball valve have undergone strict quality control and testing, and can withstand frequent on-off operations and long-term high-pressure environments. In practical applications, the failure rate of the trunnion ball valve is extremely low.
(III) Good Corrosion Resistance Oil and gas may contain corrosive gases such as hydrogen sulfide and carbon dioxide. These components can corrode pipelines and valves, affecting their service life and safety. The valve body and internal parts of the trunnion ball valve are made of corrosion-resistant materials and have undergone special surface treatment processes, which can effectively resist the erosion of corrosive gases. For example, the valve body surface of some trunnion ball valves is coated with an anti-corrosion coating. This coating can form a dense protective film to prevent corrosive gases from coming into contact with the metal surface, thus extending the service life of the valve and reducing maintenance costs.
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