How To Improve The Performance Of The Insulated Ball Valve?

3 Piece Threaded Ball Valve How to improve performance

The insulated ball valve in the existing technical field is also called the jacketed ball valve. It is a metal jacket welded on the basis of the ball valve. The jacket and the valve body form an insulation channel. Steam or other insulation media are injected into the channel to ensure that the medium in the valve can work normally. The insulated ball valve has good insulation properties, and the valve diameter is consistent with the pipe diameter. At the same time, it can effectively reduce the heat loss of the medium in the pipeline. It is mainly used in various systems such as petroleum, chemical, metallurgy, pharmaceutical, and food to transport high-viscosity media that will solidify at room temperature.

Due to the constraints of the valve sealing structure and its corresponding sealing materials, the temperature of its use is less than 200℃. Moreover, it has a short service life if used for a long time under 200℃ working conditions. Although high-strength graphite materials that can withstand 300℃ for a short time can be selected for the valve seat, there are still many parts in the valve that need to be sealed that cannot be sealed in high temperature occasions, especially in radial sealing. High-strength graphite materials are not suitable for radial sealing.

The radial seal of the common insulation ball valve adopts an O-ring sealing structure, so the operating temperature of the whole valve is directly restricted by the operating temperature of the O-ring. At present, the O-ring used on the insulation ball valve is fluororubber, and the operating temperature of fluororubber is within 200℃, and it cannot be used in this extreme temperature for a long time.

It is far from meeting the requirements of many media in the market. For example, when the working medium is rosin, the operating temperature of the insulation ball valve is required to be 300℃, which is conducive to the rosin medium to obtain a more ideal fluidity. When the O-ring is used as a sealing part in the traditional way, it cannot meet its requirements.

According to the problems existing in the insulation ball valve, it is determined to improve the sealing material and structure of the insulation ball valve.