WCB Flanged Trunnion-mounted split-body ball valves are a prevalent valve type wherein the core component – the sphere – is secured within the valve body via two trunnion bearings, forming a seal against the seats. This design delivers superior performance and stability in high-pressure or large-bore applications. Compared to floating ball valves, trunnion-type ball valves require lower operating torque during opening/closing cycles while withstanding higher pressure differentials. Additionally, they minimize seat wear, significantly extending service life. Consequently, these valves are extensively utilized across petroleum, natural gas, chemical processing, and power generation industries for regulating fluid flow in pipelines.
Specification
Ball Valve design according to API6D,BS5351,ASME B16.34
Face to face ASME B16.10,AP6D
End Flanges ASME B16.5/ASME B16.47
Butt welded ends ASME B16.25
Fire Safety API607,API6A
Inspection and test API 598,API6D
Material: WCB
Size Range: 2″~48″
Pressure Rating: ASME CL, 150, 300, 600
Advantages of WCB Trunnion-Mounted Split-Body Ball Valves
Ease of Maintenance
The valve's two-piece body design enables straightforward disassembly, facilitating efficient maintenance and installation. For seat or seal replacement, components are accessible after body separation.
Corrosion & Wear Resistance
Specialized sealing surface materials significantly enhance corrosion resistance and abrasion tolerance in aggressive media.
Minimal Fluid Resistance
The streamlined geometry and polished sealing surfaces ensure negligible flow restriction, maintaining optimal flow efficiency.
Extended Service Life
Robust monolithic construction and erosion-resistant sealing interfaces provide exceptional long-term reliability under demanding conditions.
