Unlike conventional flanged ball valves, a fully welded trunnion ball valve features a one-piece welded body with no bolted connections, which completely eliminates external leakage paths. The trunnion-mounted ball also provides superior load-bearing stability under high-pressure conditions.

The Double Block-and-Bleed (DBB) function allows the valve to simultaneously block pressure from both upstream and downstream sides while bleeding the cavity between the two seats. This ensures complete isolation for safe maintenance and inspection without shutting down the entire system.

Yes. The valve is manufactured using materials compliant with NACE MR0175 / ISO 15156 standards, specifically designed to resist sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC) in sour service environments.

The anti-blowout stem prevents the stem from being ejected under high pressure. SPE (Single Piston Effect) and DPE (Double Piston Effect) refer to the seat sealing mechanisms that enhance operational safety and provide redundant sealing options.

This valve supports multiple actuation methods including manual handwheel or gear operation, electric actuators, and pneumatic actuators for integration into automated pipeline control systems.

A full bore valve has an internal diameter equal to the pipeline, allowing unrestricted flow and easy pigging. A reduced bore valve has a smaller internal diameter, making it more compact and cost-effective for general flow control applications.