How to use fluorine lined DC globe valve?

The oxygen specific shut-off valve is made of high-quality silicon brass or stainless steel casting, Fluorine lined DC globe valve It has the advantages of high mechanical strength, wear resistance, and good safety. Used in oxygen pipelines, it has good explosion-proof and flame-retardant properties, eliminating unsafe factors on oxygen pipelines, and is widely used in oxygen engineering pipelines such as steel, metallurgy, petrochemicals, and chemical engineering. In addition to having the functions of a regular valve, it also has its own characteristics. Strict oil prohibition measures are adopted during manufacturing, PTFE lined valve And all parts undergo strict degreasing treatment before installation.

Globe valves belong to forced sealing valves, so when the valve is closed, check valve Pressure must be applied to the valve disc to force the sealing surface to not leak. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force between the valve stem and the packing, as well as the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the diameter of the valve stem should be larger, otherwise the valve stem bending fault may occur. In recent years, with the emergence of self sealing valves, the flow of medium in shut-off valves has shifted from above the valve disc into the valve chamber. Under the pressure of the medium, the force required to close the valve is small, while the force required to open the valve is large, resulting in a corresponding reduction in the diameter of the valve stem.

The types of globe valves are divided into external thread type and internal thread type according to the position of the valve stem thread. According to the flow direction of the medium, there are straight through, direct current, and angular types. Globe valves are divided into packing sealed globe valves and bellows sealed globe valves according to their sealing forms. Clamp type fluorine lined butterfly valve The bellows sealed globe valve adopts a bellows sealed design, which eliminates the disadvantages of aging and leakage of ordinary valve stem packing seals. It not only improves energy efficiency, increases production equipment safety, reduces maintenance costs and frequent maintenance, but also provides a clean and safe working environment. Meanwhile, under the influence of the medium, this type of valve is also relatively tight. Fluorine lined valve factory The "Three Modernizations" of valves in our country once stipulated that the flow direction of globe valves should be from top to bottom. This valve should be installed horizontally.

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