API 6D 3 Pieces Trunnion Ball Valve, characterized by its bearing-equipped stem shaft and trunnions on both sides of the ball, not only simplifies the structure but also enhances service life. Its excellent sealing performance and flexibility, along with superior performance in low-temperature, high-pressure, and corrosion-resistant environments, make it highly favored in specific industrial applications.
Structural Features
Fixed Ball Design: The ball is supported and fixed in the valve body by upper and lower bearings, ensuring the ball remains in place under the pressure of the medium.
Double-Seat Design: Trunnion-mounted ball valves typically feature a double-seat design, allowing sealing in both directions. This eliminates flow direction restrictions during installation and makes them suitable for bidirectional flow.
Automatic Pressure Relief: If the medium in the valve cavity experiences abnormal pressure increases due to temperature rise, the trunnion-mounted ball valve can automatically relieve pressure to ensure valve safety.
Emergency Seal System: Some trunnion-mounted ball valves are equipped with an auxiliary emergency seat seal system. In case of soft seal damage or an emergency, a sealant can be injected into the system to achieve emergency sealing.
Fire-Safe Structure: Trunnion-mounted ball valves can be designed with a fire-safe structure. In the event of a fire, this structure helps prevent significant leakage of the medium, thereby containing the spread of the fire.
Specification
Applications
Due to their excellent performance, trunnion-mounted ball valves are widely used in the following fields:
Oil Refining: Used to block or connect media in pipelines, such as crude oil and refined oil products.
Long-Distance Pipelines: Suitable for long-distance transportation pipelines, ensuring safe and stable fluid delivery.
Chemical Industry: Used to control the flow of various corrosive or non-corrosive media, such as acids, alkalis, and salts.
Natural Gas Transmission: Particularly in applications requiring pipeline purging, the simple structure, compact size, lightweight, and easy operation of trunnion-mounted ball valves are advantageous.
Urban Construction: Used for the control and distribution of fluids in urban water supply and heating systems.
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