Class 2500 A105 Trunnion Mounted Ball Valve - Heavy-Duty Electric Actuator from China Suppliers and Factory

A trunnion mounted ball valve uses upper and lower trunnion bearings to mechanically anchor the ball, preventing it from shifting under high pressure. It is typically used in large-diameter, high-pressure pipeline systems in oil, gas, and petrochemical industries where floating ball valves are insufficient.

DBB refers to a valve configuration where two independent seating surfaces simultaneously block flow from both the upstream and downstream sides, while a bleed port allows the trapped cavity pressure to be safely vented. This design is essential for applications requiring positive isolation and safe maintenance procedures.

Metal-to-metal sealing offers superior resistance to high temperatures, high pressures, abrasive particles, and corrosive or erosive media. Unlike soft seats which can degrade or melt under extreme conditions, metal seats maintain reliable sealing performance throughout the valve's service life in demanding industrial environments.

The heavy-duty electric worm gear actuator provides high output torque, enabling smooth and reliable remote operation of large or high-pressure valves. It supports automated control systems for efficient pipeline management, and the integrated manual override ensures the valve can still be operated safely during power failures or emergencies.

Trunnion mounted ball valves with DBB design and metal-to-metal sealing are widely used in the oil and gas industry, natural gas transmission pipelines, petrochemical plants, refineries, power generation facilities, and other high-pressure or high-temperature industrial applications requiring reliable and safe flow control.

Yes. The electric worm gear actuator is equipped with a manual override mechanism, allowing operators to open or close the valve by hand in the event of a power outage or actuator malfunction. This ensures continuous operational safety and minimizes downtime in critical pipeline systems.