Kelly Supplies is a professional and reliable Chinese manufacturer specializing in high-performance trunnion mounted ball valves for global industrial and pipeline applications. Focused on heavy-duty valve research, production and export, the company delivers standardized and customized pipeline valve solutions that comply with international industry norms, among which the 36-inch cast steel trunnion mounted ball valve is one of its core star products for large-diameter pipeline projects. This valve adopts raised face (RF) flange end connection, is forged and cast from premium WCB cast carbon steel, features a 600 LB pressure rating, and is fully manufactured and tested in strict accordance with ASME B16.10 dimensional standards and API 6D pipeline valve specifications, ensuring excellent versatility, interchangeability and operational stability for global engineering projects.
This large-bore 36-inch trunnion mounted ball valve is designed with mature and reliable structural technology, completely different from conventional floating ball valves. The dual trunnion fixing structure effectively bears the huge fluid thrust generated under 600 LB high-pressure working conditions, avoiding seat extrusion and deformation, greatly reducing operating torque, and significantly extending the service life of the valve sealing components. Equipped with a built-in cavity self-relieving structure, the valve can automatically release excess pressure inside the cavity to the upstream and downstream pipelines, effectively preventing equipment damage caused by overpressure. Meanwhile, it integrates multiple safety designs including anti-blowout stem, anti-static conduction device and fire-safe structure that meets API 607 and API 6FA standards, and supports double block and bleed (DBB) functions, which can achieve safe isolation of pipeline media and meet the strict safety operation requirements of flammable, explosive and high-risk fluid working conditions such as crude oil and natural gas.
In terms of performance and configuration flexibility, this WCB carbon steel ball valve has stable mechanical properties, adapting to the operating temperature range of -29℃ to +200℃, and is suitable for most conventional industrial fluid transmission scenarios. The product supports diversified customized configurations, including full bore and reduced bore flow channel options to meet different flow resistance and pipeline transmission demands. Users can choose soft seats made of reinforced PTFE for zero-leakage tight sealing, or stellite alloy overlay metal seats for high-temperature, abrasive and impurity-containing media. In terms of operation modes, it can be equipped with standard manual worm gear handwheels, as well as pneumatic, electric and hydraulic actuators, realizing on-site manual operation and remote automatic intelligent control, which is compatible with various pipeline monitoring and control systems.
Widely applicable to various heavy-duty industrial pipeline systems, this 36-inch 600 LB trunnion ball valve is the preferred equipment for long-distance natural gas trunk pipelines, urban gas gate station distribution networks, crude oil and refined oil transmission pipelines, and is also widely used in petrochemical refineries, thermal power plants, industrial water delivery and mining slurry transportation projects. All products undergo strict factory inspections, including full hydrostatic shell pressure tests and gas-liquid dual sealing tests in accordance with API 598 and API 6D test standards, with every link from raw material spectral inspection, CNC precision machining, non-destructive testing (UT/MT/PT) to finished product assembly and anti-corrosion surface treatment strictly controlled.
As a qualified export valve manufacturer, Kelly Supplies has complete international certifications such as ISO 9001 quality management system, API Q1, CE and special equipment manufacturing licenses. The company supports OEM and ODM customized services, including personalized drawing adjustment, brand logo customization and exclusive export packaging, and provides stable supply and professional after-sales services for engineering contractors and end customers in Southeast Asia, the Middle East, Europe, America and other global regions, providing reliable high-flow and high-pressure fluid control guarantees for large-scale pipeline engineering projects worldwide.
China manufacturer offers high-quality industrial products with competitive pricing and advanced production capabilities.