Side Entry Trunnion Ball Valve

ALIS Valves offers Side Entry Trunnion Ball Valves for industrial applications requiring dependable pipeline isolation, reliable pressure handling and durable operation under demanding process conditions. These valves feature a trunnion-mounted ball supported at the top and bottom, helping maintain stable ball positioning and reduce excessive loading on the seats under pressure. The side-entry design typically uses a multi-piece valve body assembled around the internal components, allowing the ball, seats and related parts to be accessed during maintenance according to the valve construction. When the ball rotates, its bore aligns with the pipeline to permit flow or turns away from the flow path to provide shut-off. Depending on the specified design, the valve can incorporate suitable body and ball materials, resilient or metal seat arrangements, and manual, pneumatic or electric actuation to meet different operating requirements.

Side Entry Trunnion Ball Valves are used in oil and gas pipelines, refineries, petrochemical plants, natural gas processing facilities, power generation units and other industrial fluid-handling systems. Depending on the selected materials, pressure class and sealing configuration, they can be specified for compatible liquids and gases within their rated operating limits. Important selection factors include valve size, pressure rating, operating temperature, process media, body and ball materials, seat design, end connection standard, leakage requirements and operating torque. Buyers should also consider fire-safe qualification, anti-static features, stem blowout protection and applicable industry standards where required by the service. The valve’s maintenance access and installation clearance should be evaluated according to its body construction and pipeline layout. Selecting the appropriate side-entry trunnion configuration helps support reliable shut-off, stable operation and maintainable performance under the intended working conditions.