API gate valves refer to the valves which are made under the regulations set by the American Petroleum Institute. They are usually widely used in petroleum and industrial processing plants, playing an important role at shutting off the flow. And it is true that the featured and core part of them is called the wedge. In order to meet the various specifications, API gate valves are indeed designed a...
The seals made from carbon graphite materials have the common advantages of both metal and non-metallic materials. Its material characteristics includes excellent self lubrication, chemical stability, high thermal conductivity, high temperature resistance, corrosion resistance, high wear resistance, low expansion and easy maching. These characteristics of carbon graphite are necessary for pure wat...
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