Globe valve ( 截止阀) Open-close part is plug valve, sealing above is flat or cone, disc along the seat to the center line of a straight line, opening and closing valve can only be fully open and close, not to adjust and throttling. Mainly used for cutting medium in the pipeline, simple structure, easy to install, easy to operate, smooth channel, small number of flow resistance, simple structure and so on. The working principle of the cut-off valve ( Figure) Globe valve structure principle of cut-off valve is closed ( The disc) Along the Industrial Valves seat centerline mobile. According to this mobile form of disc, seat and disc change in his itinerary directly proportional relationship. Due to open or close the valve stem travel relatively short, and very reliable cutting function, and due to the change of his seat and disc stroke proportional relationship, is very suitable for the traffic regulation. Therefore, this type of valve is well suited for use as cut off or adjust and throttling. 1, the opening and closing without friction. This function completely solve the traditional valve for sealing surface friction each other and affect the sealing problem. 2, the structure of the jacket type. The Industrial Valves can be directly mounted on the pipeline online inspection and maintenance, can effectively reduce the parking device, reduce the cost. 3, single seat design. To eliminate the influence due to abnormal pressure Industrial Valves lumen medium use safety problems. 4, low torque design. Special structure design of the valve stem, only with a small hand could easily open/close the valve. 5, wedge seal structure. by valve stem provides mechanical force, wedge pressure the ball into the seat and seal, make the valve's sealing is not affected by changes in the pipeline pressure difference, under various conditions sealed performance has a reliable guarantee. 6, the structure of the sealing surface of self-cleaning. When the ball tilting away from the seat, fluid in the pipeline along the sphere uniform sealing surface into 360 ° through, not only eliminates the high velocity on the seat of local scour, also washed away by the accumulated on the surface of the sealing material, achieve the goal of the clean. 7, below the valve diameter (valve body, valve cover is die forgings, DN65 over the body and bonnet is steel. 8, the connection forms of body and cover are different, clip pin shaft connection, flange gasket connection and sealing thread connection. 9, the seat and clapper sealing surfaces are using plasma spray welding or surfacing welding tungsten cobalt chromium carbide, sealing surface hardness, wear resistance, abrasion resistance, long service life. 10, materials for nitriding steel stem, stem after nitriding high surface hardness, abrasion resistance, scratch resistance, corrosion resistance, long service life and at the same time.
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