Instrument valve

Instrument valve manifolds valve is a pipeline accessory. It is used to change the channel section and flow direction of medium, control of a device for conveying medium flow. The sealing performance of Instrument manifolds valve instrument valve refers to the part of the sealing ability to prevent media leaks, it is the technical performance index of instrument valve is the most important. Sealing parts instrument valve has three parts: opening and closing parts at the contact and valve seat sealing surface between the two; filler stem and the stuffing the distribution and office; valve connection with the valve cover. The first one is called the leak within the leak, which is usually known as Guan lax, it will affect the ability of instrument valves truncated medium. For the truncated valve, the internal leakage is not allowed. Leakage after the two called the leakage, that media leaks from the valve to the valve outside. Leakage will result in material loss, pollution of the environment, can also cause serious accidents. The explosive, toxic or radioactive medium, leakage is allowed, and thus the instrument valve must have a reliable sealing performance.