18061659285
Large Diameter Fully Welded Ball Valve for Natural Gas Transmission Pipeline
Product Parameters
| Valve Type | Fully Welded Trunnion-Mounted Ball Valve |
| Size Range | 8" – 80" (DN200 – DN2000), with larger sizes available upon request |
| Pressure Rating | Class 300, Class 600, Class 900; higher pressure ratings available upon request |
| Temperature Range | -46°C to +60°C; custom higher or lower temperature ratings available upon request |
| Design Standards | Manufactured in compliance with API 6D, ASME B16.34, ISO 17292 standards |
| Connection Type | Fully Welded (FW) |
| Port Design | Full Bore / Reduced Bore |
| Body Material | LF2M, F304/F316, F51 (custom materials available upon request) |
| Seat Material | PTFE, PCTFE, Metallic (other custom materials available upon request) |
| Operation | Manual lever, worm gear, electric actuator, pneumatic actuator, hydraulic actuator (optional) |
| Fire-Safe Design | Designed to meet API 607 / API 6FA fire-safe standards |
| Automation Ready | ISO 5211 mounting pad for actuator installation |
| Brand | SLVCN |
Key Features
Monoblock Fully Welded Construction
Eliminates external leakage paths and enhances long-term sealing integrity for critical gas transmission pipelines.
Heavy-Duty Trunnion Mounted Design
Ensures pressure-balanced sealing stability and reliable shut-off performance in large diameter pipeline applications.
Engineered for Extra-Large Diameters
Structural reinforcement and optimized internal design maintain rigidity and alignment in oversized valve configurations up to DN1200 and beyond.
Pipeline-Grade Double Block & Bleed Function
Provides secure isolation, cavity pressure relief, and verification capability for safe gas transmission operations.
Fire-Safe & Anti-Static Protection
Designed to meet emergency sealing requirements and ensure operational safety in hazardous gas environments.
Built for Long-Term Gas Infrastructure Service
Advanced welding procedures, NDE inspection, and full in-house testing ensure durability, reduced maintenance, and infrastructure-level reliability.
Product Details
The SLVCN Large Diameter Fully Welded Trunnion Ball Valve is a high-performance pipeline ball valve designed for natural gas transmission and major energy infrastructure projects. Built with a monoblock fully welded body, it delivers exceptional sealing integrity and long-term operational reliability in demanding pipeline environments.
Featuring a heavy-duty trunnion mounted design, this large diameter ball valve ensures stable, pressure-balanced shut-off performance while minimizing operating torque in oversized applications. It is ideally suited for gear-operated or motorized systems used in critical gas transmission networks.
Manufactured from low-temperature carbon steel such as ASTM A350 LF2 and verified through impact testing and comprehensive inspection, each valve guarantees mechanical strength and durability in cold climate conditions. Available in sizes up to DN1200 and beyond, SLVCN provides customized fully welded pipeline valve solutions engineered for extended service life, reduced maintenance, and infrastructure-grade reliability.
Decades of Expertise
Tailored Solutions
Rigorous Quality Control
Proven Reliability
How We Ensure Quality & Reliability?
Quality is built into every stage - from raw material to final testing.
CE Certificate
ISO9001 Certificate
Certificate for Credit for Quality Service
Certificate of Observing Contract and Keeping Promise
Trademark Certificate