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Electric globe valve is driven up and down by motor through reducer. The opening and closing parts of globe valve are plug-shaped discs. The sealing surface is flat or conical. The disc moves in a straight line along the center line of the seat, so that the disc and sealing pair can be forced to seal or open. Electric globe valve has smooth opening and closing, large output torque; greatly reduces the labor intensity of operators, especially for high-pressure, large-caliber valves; suitable for installation in positions that can not be manually operated or difficult to access, easy to operate over a long distance, installation height is not limited; conducive to the automation of the whole system; power specific gas Pressure source and hydraulic source are easy to obtain. The auxiliary installation and maintenance of electric wires are much easier than air or hydraulic pipelines. However, the structure is complex. When used in damp and explosive sites, moisture-proof and explosion-proof measures need to be taken. Generally, it is suitable for places where the ambient temperature is lower than 50 C and the relative humidity is less than 80%. Because the stem opening or closing stroke of this kind of valve is relatively short, and has a very reliable cut-off function, and the change of the seat opening is proportional to the disc travel, it is very suitable for flow regulation. Therefore, this type of cut-off valve is very suitable for cut-off or regulation and throttling. It is widely used in various pipeline conditions in petroleum, chemical, fertilizer, pharmaceutical, power and other industries.
Product characteristics
The sealing surface of disc and seat is made of iron-based alloy surfacing or Stellite cobalt-based cemented carbide surfacing, which has good wear resistance, high temperature resistance, corrosion resistance, abrasion resistance and long service life.
The valve stem is tempered and nitrided with good corrosion resistance and rubbing resistance.
Various flange piping standards and flange sealing surface forms can be adopted to meet various engineering needs and user requirements.
The valve body material variety is complete, fillers and gaskets can be reasonably selected according to actual working conditions or user requirements, suitable for various pressures, temperatures and media.
Small working journey and short start-up and shut-down time.
During the opening and closing process, the friction between the sealing surfaces is small and wear-resistant.
The structure of globe valve body is straight through, direct current and right angle. Straight-through structure is the most common structure, but the flow resistance is large. DC fluid has less resistance and is mostly used for fluids with solid particles or high viscosity. The right-angle valve body is usually forged, which is suitable for globe valves with smaller diameter and higher pressure.
