原文：
            按用途和作用分类 截断阀类 主要用于截断或接通介质流。包括闸阀、截止阀、隔膜阀、球阀、旋塞阀、碟阀、柱塞阀、球塞阀、针型仪表阀等。 调节阀类 主要用于调节介质的流量、压力等。包括调节阀、节流阀、减压阀等。 止回阀类 用于阻止介质倒流。包括各种结构的止回阀。 分流阀类 用于分离、分配或混合介质。柱塞阀包括各种结构的分配阀和疏水阀等。 安全阀类 用于介质超压时的安全保护。包括各种类型的安全阀。 按主要参数分类

     （一） 按压力分类 真空阀 工作压力低于标准大气压的阀门。 低压阀 公称压力PN 小于1.6MPa的阀门。 中压阀 公称压力PN 2.5~6.4MPa的阀门。 高压阀 止回阀公称压力PN10.0~80.0MPa的阀门。 超高压阀 公称压力PN大于100MPa的阀门。

     （二）旋塞阀 按介质温度分类 高温阀 t 大于450C的阀门。 中温阀 120 C小于 t 小于450 C的阀门。 常温阀 -40 C小于 排泥阀 t 小于120 C的阀门。 低温阀 -100 C小于 t 小于-40 C的阀门。 超低温阀 t 小于-100 C的阀门。

    （三） 按阀体材料分类 非金属材料阀门：如陶瓷阀门、玻璃钢阀门、塑料阀门。 金属材料阀门：如铜合金阀门、氧气专用阀铝合金阀门、铅合金阀门、钛合金阀门、蒙乃尔合金阀门 铸铁阀门、碳钢阀门、铸钢阀门、低合金钢阀门、高合金钢阀门。 金属阀体衬里阀门：如衬铅阀门、衬塑料阀门、衬搪瓷阀门。 通用分类法 这种分类方法既按原理、作用又按结构划分，是目前国际、国内最常用的分类方法。一般分闸阀、截止阀、节流阀、仪表阀、柱塞阀、隔膜阀、旋塞阀、球阀、蝶阀、止回阀、减压阀安全阀、疏水阀、调节阀、底阀、过滤器、排污阀等。

“ Advantages and disadvantages of the various valves ”是由中国过滤器网提供的国际阀门新闻，译文仅供参考。另外，中国过滤器网还提供相关产品搜索： SY4P法兰连接Y型过滤器、 SRB系列篮式过滤器、 SB14/ST34法兰连接T型过滤器 F43X双封自净式防逆水封阀、 HS41X防污隔断阀(管道倒流防止器)等。

译文：
Classification by purpose and role Cut off valve is mainly used for cut off or connected to medium flow. Including gate valve, globe valve, diaphragm valve, ball valve, plug valve, butterfly valve, plunger valve, Ball Valve, needle-type meter valve. Regulating valves primarily forBellow Seal Valve regulating the media flow and pressure. Including control valve, throttle, valve and so on. Check valve type used to prevent the media back. Including the structure of valve. Shunt valve for the separation, Needle Valvesdistribution, or mixed media. Including the distribution of various structures such as valves and steam traps. Overpressure safety valve when the class for medium security. Including all types of safety valve. Classification by main parameters (A) by pressure classification Vacuum valve working pressure less than the standard atmospheric pressure valve. Low pressure valve valve, PN is less than 1.6MPa. Medium pressure valve Nominal pressure PN 2.5 ~ 6.4MPa valve. PN10.0 ~ 80.0MPa pressure valveWater Pump Control Valves Nominal pressure valve. High pressure valve of the valve, PN greater than 100MPa. (B) classified by the medium temperature T greater than the 450C temperature valve valve. The temperature valve 120 C is less Filterthan t less than 450 C of the valve. Valve at room temperature is less than t less than -40 C 120 C of the valve. Valve -100 C temperature is less than t less than -40 C valve. Cryogenic valve valve t is less than -100 C. (C) classification according to body material Non-metallic material valve:Water Power Control Valves the valve, such as ceramics, glass and steel valves, plastic valves. Metal valves: such as copper alloy valves, aluminum valves, lead alloy valves, titanium valves, Monel valves Cast iron valves, carbon steel valves,Forged Steel Valves cast steel valve, low-alloy steel valves, high alloy steel valves. Metal valve body lining: lining of lead, such as valves, plastic lined valves, valves lining enamel. General Classification This classification not only by theory, the role of the structure divided by another, is the international, the most commonly used classification methods. General sub-gate valve, globe valve, throttle, instrument valves, piston valves, diaphragm valves, plug valves, ball valves, butterfly valves, check valves, pressure reducing valve safety valve, steam trap, control valve, foot valve, filters, drain valve and so on.

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2010-08-23 07:48

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