Designed for superior sealing performance and convenient maintenance

Our top-entry trunnion ball valves are meticulously designed to provide exceptional sealing performance and extended service life in the most demanding high-pressure and high-temperature applications. Featuring a unique top-entry design, these valves allow for easy in-line maintenance and inspection without removing the valve from the pipeline, making them ideal for critical isolation points where safety and longevity are paramount.

Featuring an advanced trunnion-mounted design

A key feature of our top-entry trunnion-mounted ball valve is its trunnion-mounted ball mechanism, where the ball is mechanically fixed at its top and bottom by a fixed shaft. This robust support system ensures the ball rotates along the fixed axis, preventing displacement under pressure and eliminating the excessive seat wear and high torque issues common in floating ball valve designs. Spring-loaded, self-compensating seat rings are pressed against the ball, creating a reliable bidirectional seal, which is further enhanced by line pressure.

Offering unparalleled ease of maintenance

The top-entry design allows operators to access all internal components, including the ball, seat, and stem, simply by removing the top flange cover. This enables in-line maintenance, inspection, and component replacement without removing the valve from the pipeline, significantly reducing downtime and operating costs. The one-piece body construction eliminates potential leak paths inherent in split-body designs, ensuring superior sealing integrity.

Designed specifically for critical industrial applications

Our top-entry trunnion ball valves are the industry standard in oil and gas transmission, refining and petrochemical process pipelines, offshore platforms, and power generation systems. These valves, available in sizes ranging from 2 inches to 60 inches (DN50-DN1500) and pressure ratings from Class 150 to 2500 LB, provide reliable shut-off capabilities for a wide range of fluids, including natural gas, crude oil, steam, and corrosive chemicals.

Equipped with comprehensive safety features

Each valve features a fire-safe design compliant with API 607standards and is equipped with an anti-static device, a blow-out proof stem design, and low-leakage stem packing. Furthermore, emergency sealant injection fittings on the valve seat and stem ensure reliable operation even under extreme conditions.

Manufactured to International Standards

Our valves conform to international standards such as API 6D, ASME, and ISO. These valves are available with flanged, butt-weld, or hub connections, suitable for above-ground and underground installations, and can be supplied with extended stems for buried applications.