Author:Site Editor Publish Time: 2019-02-04 Origin:Site
The trunnion mounted ball valve is a high-performance industrial valve suitable for various corrosive and non-corrosive media in ball valves. The trunnion mounted ball valve has low torque, stable sealing performance and long service life.
Trunnion mounted ball valve is suitable for water, steam, oil, oxidizing and other media. Deeply recognized and welcomed by the petroleum refining, long-distance pipelines, and steel fields, it is of course inseparable to have such a wide range of applications and its own advantages.
Because the industrial ball valve has the following advantages, the trunnion mounted ball valve is a good choice.
In addition to the standard sealing ring, the O-ring is also installed on the packing gland. The double seal ensures the reliability of the trunnion mounted ball valve stem seal; the added graphite filler and sealant injection minimizes stem leakage after a fire. The stem sliding bearing and the thrust bearing make the valve easy to operate.
According to the needs of installation or operation, the trunnion mounted stem can be lengthened. The extension stem trunnion mounted ball valve is especially suitable for occasions where underground gas pipelines need to be buried. Of course, the length of the stem is determined according to customer needs.
The valve seat and stem bearing with small friction coefficient and good self-lubrication greatly reduce the operating torque of the trunnion mounted ball valve. Therefore, even in the case where the sealing grease is not provided, the trunnion mounted ball valve can be operated flexibly and freely for a long period of time.
The trunnion mounted ball valve adopts the spring preloading floating valve seat. When the trunnion mounted ball valve is in the fully open or fully closed state, the valve seat on the upstream and downstream sides blocks the fluid, and the valve body retains the cavity. Excreted through the drain valve.
When the trunnion mounted ball valve body cavity stays in the medium temperature and causes abnormal pressure rise, it does not need to pass the safety valve, but the valve seat function can automatically release pressure, which ensures the trunnion mounted ball valve is transported. Safety in liquid media is very important.
Learning above information,I think we can easy find out why trunnion mounted ball valve is importance for pipeline and industrial working conditions.