Trunnion Mounted Ball Valve Main Features
Trunnion Mounted Ball Valve Main Features

As far as we know, a brass Trunnion Mounted Ball Valve is a kind of ball valve whose main material is brass, especially its valve body. Brass is an alloy of copper and zinc. It is used for decoration for its bright gold-like appearance and for applications where low friction is required such as locks, gears, bearings, doorknobs, ammunition, and valves. There are various standards for brass ball valves, such as standard number GB/T15185-1994, standard number NF/E29-354-2003, standard number JB/T8861-2004.
1. Low Flow Resistance
The passage of ball valve can be divided into full port and reduced port. Whether full port or reduced port, its factor of flow resistance are smaller, especially the full-port type. The passage diameter of the full-port ball valve is the same as the pipe diameter that makes the partial resistance equal to friction resistance of the pipe. Therefore, full-port Top Entry Ball Valve has the lowest flow resistance compared to other types.
2. Quick and Easy to Open and Close
Its 90-degree manual handle is easy and quick to open and close. In some cases, it only takes as little as 0.05~0.1 second to finish the action. So it is preferable in automation system.
3. Great Sealing
At present, most of the sealing element is made of flexible materials such as Polytetrafluoroethene, PTFE. Sealing element combined with metal and non-metal materials is called soft sealing. Generally speaking, effectiveness of soft sealing is easy to guarantee, and it requires low machining precision and rough surface.
4. Longer Duration
The self-lubrication feature of PTFE reduces the friction between sealing element and ball. Besides, the improvement on machining skills lowers the rough surface of the ball, increasing the life span.
5. The smooth surface of passage facilitates the transportation of sticky fluid, serous fluid and particles.
6. It can work smoothly without applying lubricants which is ideal to handle corrosive medium and low-boiling-point fluid.
7. Under condition of higher pressure and temperature, it can do bi-directional sealing.
8. The sealing elements inside the body and seat can fully separate the medium that can prevent erosion.
9. Its compact construction and light weight is ideal to handle low temperature medium.
10. Its symmetrical design, especially welded ball valve, is easy to take the pressure from pipeline.
11. The welded ball valve can be directly buried underground to prevent the components inside the body from erosion. The duration can last up to 30 years. It is mostly used in oil and gas sectors. http://www.china-ballvalve.cn/Trunnion-ball-valve.html
Trunnion mounted ball valve
trunnion mounted ball valve
trunnion mounted ball valve