Trunnion Ball Valve Manufacturer in Italy

High-pressure and large-diameter pipelines require valve designs that maintain sealing stability without increasing operating torque. Trunnion ball valves are engineered for this purpose, using a fixed ball support system to handle pressure loads effectively.

ValvesOnly Europe manufactures trunnion ball valves designed for stable sealing, reduced operational load, and long service life in critical pipeline systems. As a Trunnion Ball Valve Manufacturer in Italy, the valves are built to meet international standards for performance in demanding operating conditions.

Working Principle of Trunnion Ball Valve

Trunnion ball valves operate using a ball that is mechanically anchored at the top and bottom. Unlike floating ball designs, the trunnion-mounted ball remains fixed while the seats move against it to create sealing.

This design reduces the load on the valve seats and allows the valve to maintain tight shutoff even under high-pressure conditions, while also minimizing operating torque.

Advantages of Trunnion Ball Valves in Industrial Applications

• Suitable for high-pressure and large-size pipeline systems
• Reduced operating torque compared to floating ball valves
• Reliable sealing under varying pressure conditions
• Improved seat life due to reduced load on sealing surfaces
• Stable performance in critical service environments

Types of Trunnion Ball Valves Offered

Trunnion ball valves are selected based on manufacturing method and application requirements.

• Casting Trunnion Ball Valve – Used for general industrial applications with cost-effective construction
• Forged Trunnion Ball Valve – Suitable for high-pressure and critical service with enhanced strength

Trunnion Ball Valve Design Standards

• API 6D – Pipeline valve design
• ASME B16.34 – Valves flanged, threaded, and welding end
• ASME B16.10 – Face-to-face dimensions
• ASME B16.5 – Flanged end dimensions
• ASME B16.25 – Buttwelding ends

Inspection and Testing Standards for Trunnion Ball Valves

• API 598 – Valve inspection and testing
• ISO 5208 – Leakage testing
• EN 12266 – Pressure testing

Body and Trim Material Compatibility

Material selection depends on pressure rating, temperature range, and media characteristics, especially in high-pressure and corrosive service environments.

Industrial Applications of Trunnion Ball Valves

• Oil and Gas Processing – High-pressure pipeline isolation
• Petrochemical Plants – Handling process fluids under pressure
• Power Generation – Steam and high-pressure service lines
• Chemical Processing – Corrosive media handling systems
• Marine and Offshore – Pipeline systems in harsh environments
• Water and Wastewater – Industrial flow control applications

Special Features and Customization Options

• Trunnion-mounted design for reduced operating torque
• Double block and bleed functionality where required
• Custom end connections for pipeline compatibility
• Fire-safe and anti-static design options
• Compatibility with manual, gearbox, and actuator operation

If your application involves high-pressure service or large-diameter pipelines, trunnion ball valve configuration can be aligned with system requirements to ensure reliable shutoff and operational stability.