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How to control the insulation performance and sealing perfor

Author:tongda Popularity: Issuing time:2018-07-19 17:53

The main seat seal material of the ball valve is polytetrafluoroethylene (PTFE), which is inert to almost all chemicals, and has a small friction coefficient, stable performance, not easy to age, wide temperature range and excellent sealing performance. Comprehensive features.
The physical properties of Teflon, including higher coefficient of expansion, sensitivity to cold flow, and poor thermal conductivity, require that the design of the seat seal must be centered around these characteristics. The plastic material of the seat seal also includes filled polytetrafluoroethylene, nylon and many other materials.
When the sealing material hardens, the reliability of the seal is compromised, especially in the case of low pressure differentials. In addition, synthetic rubber such as butyl rubber can also be used as a seat sealing material, but the medium to which it is applied and the temperature range used are limited. In addition, if the medium is not lubricated, it is easy to get stuck in the sphere by using synthetic rubber.
Insulation ball valve adopts good insulation measures for a large number of valves in industrial production, which not only can obtain good energy saving effect, but also can improve the safety and reliability of the valve and prolong the service life of the valve.


The heat preservation ball valve has good heat preservation and cold preservation characteristics, and the diameter of the valve is consistent with the pipe diameter, and at the same time, the heat loss of the medium in the pipeline can be effectively reduced. It has good insulation and cold preservation characteristics, and at the same time can effectively reduce the heat loss of the medium in the pipeline. Insulation valves are widely used in various systems such as petroleum, chemical, metallurgy, and pharmaceuticals, effectively reducing the loss of heat in the pipeline and preventing the appearance of crystals and solidification of the medium. The function of the heat preservation ball valve is that when the valve passes through the valve at a high or low temperature, the material in the heat preservation valve has a heat insulation effect on the medium, so that the medium does not condense or stick to the inside of the valve body, so that the opening and closing of the valve can operate normally.

Source of this article: http://en.tongdavalve.com/news/144.html