Globe valve is closed parts ( valve ) along the center line of the valve seat for mobile. According to this mobile form of flap valve the valve seat through the mouth, change is associated with the valve stroke proportional relationship. As such the valve stem to open or close the trip is relatively short, and has very reliable cutting function, and because the valve seat through the mouth of change and the trip valve proportional relationship, very suitable for flow regulation. Therefore, this type of valve is suitable for cutting or adjusting and throttling. Selection principle is:1, high temperature, high pressure pipeline or equipment should be chosen cut-off valve. A fire power plant, nuclear power plant, petroleum chemical engineering system of high temperature, high pressure pipe. In 2, the pipeline flow resistance the strict requirements of the pipeline. The pressure loss with little place. In 3, a small valve can select needle valve, instrumentation valves, sampling valves, pressure gauge valve. In 4, a flow regulating or pressure regulation, but adjusting accuracy is not high, and the pipeline diameter and relatively small, such as mm nominal diameter≤ 50mm pipeline, appropriate chooses. Synthesis of5, in the industrial production of small chemical fertilizer and chemical fertilizer use nominal pressure PN160nominal pressure 16MPa or PN320nominal pressure 32MPa high pressure angle type stop valve or a pressure angle throttle valves. In 6, the alumina production by Bayer removal of silicon in the workshop, the easy coking line, easy selection of valve body, valve seat can separate place, hard alloy sealing DC type stop valve or a DC type throttle valve. 7, in the construction of city water supply, heating engineering, nominal by smaller pipeline, can choose cut-off, balance valves or piston valve, such as nominal by less than 150mm pipeline. The most obvious advantages are : the opening and closing process, because the valve sealing surface on the body than the friction between the valve is small, and therefore wear. Seat height is typically only open channel diameter of 1/4, so much smaller than the gate. Usually in the valve body and valve has a sealing surface, and thus better manufacturing processes, convenient repair. Nominal pressure and pressure level: PN1.0-16.0MPa, ANSI CLASS150-900, JIS10-20K nominal diameter or diameter: DN10 ～ 500, NPS1/2 ~ 36" connection: flange, welding, threaded and other applicable temperature: -196 ℃ ~ 700 ℃drive mode:, pneumatic, electric, hydraulic, pneumatic and hydraulic linkage, the body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8(304), CF3(304L ), CF8M (316), CF3M (316L, Ti ). The choice of different materials, are suitable for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.

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