JONLOO, a trusted manufacturer of API 6D industrial valves, proudly announces the successful fabrication and factory testing of its 30 inch Class 150 A105 trunnion‑mounted ball valve. This large bore trunnion mounted ball valve represents Jonloo’s capability to manufacture heavy‑duty, large‑size pipeline isolation valves for global oil, gas and petrochemical projects. As demand grows for reliable large bore trunnion mounted ball valves, Jonloo continues to expand its product portfolio and production capacity to meet the strict requirements of international end users and EPC contractors.
Large bore trunnion mounted ball valves serve as critical isolation equipment for energy transmission and process systems. The newly finished 30 inch Class 150 A105 trunnion‑mounted ball valve is engineered for long‑term stable operation in demanding industrial environments. Manufacturing a 30 inch Class 150 A105 trunnion‑mounted ball valve brings many technical challenges, from raw material forging and heat treatment to precision machining and pressure testing. Every production step of this Jonloo trunnion ball valve follows API 6D and ASME B16.34 standards to guarantee decades of safe service.
This 30 inch Class 150 A105 trunnion‑mounted ball valve adopts ASTM A105 forged carbon steel as the valve body material. ASTM A105 forged carbon steel delivers excellent tensile strength and impact resistance under fluctuating pressure and temperature. Compared with cast valve bodies, the forged body of this Jonloo trunnion ball valve avoids common casting defects, improving overall safety and reliability. The large bore trunnion mounted ball valve uses a full bore internal design to create a smooth medium flow path and reduce pressure loss across the valve.
Unlike floating ball valves, the 30 inch Class 150 A105 trunnion‑mounted ball valve uses upper and lower trunnion shafts to support the ball. This trunnion design transfers most fluid pressure load onto the trunnion assembly instead of the sealing seats. This key design reduces operating torque, minimizes seat wear and extends the service life of the Jonloo trunnion ball valve under continuous pressure differential. This large bore trunnion mounted ball valve features double block and bleed (DBB) function. Operators can seal both upstream and downstream sides and vent the valve cavity, allowing safe maintenance without shutting down the entire pipeline system.
Application Scenarios & Working Conditions of the 30 Inch Class 150 A105 Trunnion‑Mounted Ball Valve
The 30 inch Class 150 A105 trunnion‑mounted ball valve is suitable for a wide range of media and working conditions. It works reliably with crude oil, natural gas, process gas and non‑corrosive liquid media under normal and moderately elevated temperature ranges.
This Jonloo trunnion ball valve is widely used in long‑distance energy transmission pipelines, compressor stations, oil & gas storage terminals, refinery main lines and large petrochemical plants. The large bore trunnion mounted ball valve can handle frequent start‑stop cycles and fluctuating line pressure. It supports both above‑ground installation and buried pipeline installation. In emergency situations, the 30 inch Class 150 A105 trunnion‑mounted ball valve acts as a critical safety barrier to quickly cut off medium flow and protect equipment and site personnel. Many EPC companies and end operators select this large bore trunnion mounted ball valve for large energy infrastructure projects that require low failure rates and long service life.
- Solid forged A105 body: The ASTM A105 forged body of this 30 inch Class 150 A105 trunnion‑mounted ball valve has uniform metal grain and high mechanical strength. It resists deformation under long‑term pressure and external site loads. The forged structure greatly reduces hidden material defects compared to cast valves.
- Long service life with low seat wear: The trunnion support design of this Jonloo trunnion ball valve reduces pressure load on valve seats. The large bore trunnion mounted ball valve maintains stable sealing after many open‑close cycles and cuts down maintenance frequency.
- DBB safety design: The double block and bleed function of the 30 inch Class 150 A105 trunnion‑mounted ball valve enables safe cavity venting. Maintenance can be performed without full system shutdown, improving site safety and reducing production downtime.
- Full bore design for low pressure loss: The full bore structure matches the pipeline inner diameter, minimizes turbulence and pressure drop, saving energy for medium transportation.
- Flexible actuation options: This Jonloo trunnion ball valve can be fitted with gearbox, electric actuator or pneumatic actuator, supporting local manual operation and remote automatic control for different project designs.
- Complete pressure testing and documentation: Every 30 inch Class 150 A105 trunnion‑mounted ball valve passes hydrostatic shell test and seat tightness test before delivery. Material certificates and test reports are fully supplied for project documentation and client review.
Strict quality control is implemented throughout manufacturing of this large bore trunnion mounted ball valve. A105 steel billets go through hot forging and normalized heat treatment to release internal stress. All sealing surfaces, flange faces and trunnion mating surfaces are processed by heavy‑duty CNC machines with tight tolerance control. All components receive careful visual and dimensional inspection before assembly. After assembly, the 30 inch Class 150 A105 trunnion‑mounted ball valve completes required pressure tests. All inspection data is fully recorded for traceability.
The global market for large bore trunnion mounted ball valves keeps growing with ongoing energy infrastructure investment. However, manufacturing a qualified 30 inch Class 150 A105 trunnion‑mounted ball valve requires advanced forging, machining and testing capabilities. Only experienced manufacturers like Jonloo can produce reliable large bore trunnion mounted ball valves that fully comply with international standards. Many factories cannot meet the strict material and performance requirements for such large‑size valves.
Jonloo’s product range of trunnion ball valves covers sizes from 2 inch to 48 inch and pressure classes from Class 150 to Class 2500. Material options include carbon steel, low alloy steel and various stainless steel grades. Besides standard large bore trunnion mounted ball valves such as this 30 inch Class 150 A105 trunnion‑mounted ball valve, Jonloo’s engineering team can develop custom valves for special project requirements, including low‑temperature, fire‑safe and fugitive emission optimized designs.
After factory acceptance, this 30 inch Class 150 A105 trunnion‑mounted ball valve will receive surface protection and packaging for shipment to overseas end users. Jonloo will keep investing in R&D and production of heavy‑duty large bore trunnion mounted ball valves, delivering reliable Jonloo trunnion ball valves and professional technical support for global energy and process industry partners.
Jonloo is a professional industrial valve manufacturer based in China. Jonloo specializes in gate valves, globe valves, ball valves, check valves, including trunnion ball valves for oil & gas, petrochemical, power generation and water treatment industries. If you are interested with our products, feel free to contact us.
