阀门是控制流体流动的重要设备，根据不同的分类标准，阀门可以分为多种类型。以下是一些常见的分类方法：

　　Valves are important equipment for controlling fluid flow, and can be classified into various types according to different classification standards. Here are some common classification methods:

　　按作用和用途分类：

　　Classified by function and purpose:

　　截断阀：用于接通或截断管路中的介质，如球阀、闸阀、截止阀、蝶阀和隔膜阀。

　　Block valve: used to connect or block media in pipelines, such as ball valves, gate valves, globe valves, butterfly valves, and diaphragm valves.

　　止回阀：防止介质倒流，如止回阀和底阀。

　　Check valve: prevents medium backflow, such as check valves and bottom valves.

　　安全阀：防止管路或装置中的介质压力超过规定数值，达到安全保护的目的。

　　Safety valve: prevents the pressure of the medium in the pipeline or device from exceeding the specified value, achieving the purpose of safety protection.

　　调节阀：调节介质的流量、压力等参数，如调节阀、节流阀和减压阀。

　　Regulating valve: regulating the flow rate, pressure and other parameters of the medium, such as regulating valve, throttle valve and pressure reducing valve.

　　分流阀：分配、分离或混合管路中的介质，如分配阀、疏水阀。

　　Diverter valve: Used for distributing, separating, or mixing media in pipelines, such as distribution valves and drain valves.

　　按驱动形式分类：

　　Classified by driving form:

　　手动阀：需要人工操作开启或关闭。

　　Manual valve: requires manual operation to open or close.

　　动力驱动阀：如电动阀、气动阀，通过外部能源驱动。

　　Power driven valves, such as electric valves and pneumatic valves, are driven by external energy sources.

　　自动类：利用介质本身的能量来使阀门动作，如止回阀、安全阀、自力式减压阀和疏水阀。

　　Automatic type: using the energy of the medium itself to activate valves, such as check valves, safety valves, self operated pressure reducing valves, and drain valves.

　　按公称压力分类：

　　Classified by nominal pressure:

　　真空阀：工作压力低于标准大气压。

　　Vacuum valve: The working pressure is lower than the standard atmospheric pressure.

　　低压阀：公称压力PN ≤1.6Mpa。

　　Low pressure valve: nominal pressure PN ≤ 1.6Mpa.

　　中压阀：公称压力PN 为2.5、4.0、6.4Mpa。

　　Medium pressure valve: nominal pressure PN is 2.5, 4.0, 6.4Mpa.

　　高压阀：公称压力PN 为10~80Mpa。

　　High pressure valve: nominal pressure PN is 10~80Mpa.

　　超高压阀：公称压力PN≥100Mpa。

　　Ultra high pressure valve: nominal pressure PN ≥ 100Mpa.

　　按工作温度分类：

　　Classified by working temperature:

　　超低温阀：工作温度低于—80℃。

　　Ultra low temperature valve: working temperature below -80 ℃.

　　低温阀：工作温度介于—40℃~—80℃。

　　Low temperature valve: The working temperature ranges from -40 ℃ to -80 ℃.

　　常温阀：工作温度高于—40℃且低于或等于120℃。

　　Normal temperature valve: The working temperature is above -40 ℃ and below or equal to 120 ℃.

　　中温阀：工作温度高于120℃且低于450℃。

　　Medium temperature valve: Operating temperature above 120 ℃ and below 450 ℃.

　　其他特殊分类：

　　Other special categories:

　　排污阀：用于排放管路中的杂质或废水。

　　Drain valve: used to discharge impurities or wastewater from pipelines.

　　水力控制阀：利用流体动力学原理控制阀门开闭。

　　Hydraulic control valve: using fluid dynamics principles to control valve opening and closing.

　　过滤阀：用于过滤介质中的杂质。

　　Filter valve: used to filter impurities in the medium.

　　以上就是我们产品的相关介绍，本文来源良工阀门，更多精彩内容请点击：http://www.jnlgvf.com

　　The above is the relevant introduction of our product. This article is from Lianggong Valve. For more exciting content, please click: http://www.jnlgvf.com