译文：
调节阀又名控制阀，通过接受调节控制单元输出的控制信号，借助动力操作去改变流体流量。调节阀一般由执行机构和阀门组成。如果按其所配执行机构使用的动力，调节阀可以分为气动调节阀、电动调节阀、液动调节阀三种，即以压缩空气为动力源的气动调节阀，以电为动力源的电动调节阀，以液体介质(如油等)压力为动力的电液动调节阀，另外，按其功能和特性分，线性特性，等百分比特性及抛物线特性三种.现场总线型调节阀等。 调节阀的阀体种类很多，常用的阀体种类有直通单座、直通双座、角形、隔膜、小流量、三通、偏心旋转、蝶形、套筒式、球形等。在具体选择时，可做如下考虑: (1)阀芯形状结构 主要根据所选择的流量特性和不平衡力等因素考虑。 (2)耐磨损性 当流体介质是含有高浓度磨损性颗粒的悬浮液时，阀的内部材料要坚硬。 (3)耐腐蚀性 由于介质具有腐蚀性，尽量选择结构简单阀门。 (4)介质的温度、压力 当介质的温度、压力高且变化大时，应选用阀芯和阀座的材料受温度、压力变化小的阀门。 (5)防止闪蒸和空化 闪蒸和空化只产生在液体介质。在实际生产过程中，闪蒸和空化会形成振动和噪声，缩短阀门的使用寿命，因此在选择阀门时应防止阀门产生闪蒸和空化。

“ Regulating valve body type selection, as well as factors ”是由提供的国际阀门新闻，译文仅供参考。另外，中国调节阀网还提供相关产品搜索：、、、、等。

原文：
Control valve, also known as control valves, by accepting the control unit regulating the output control signal, using power-operated to change the fluid flow. Regulating valve and valves are generally composed of the implementing agencies. If you press it with the implementing agencies to use power, control valve can be divided into pneumatic control valve, electric control valve, hydraulic control valve three kinds, namely, the source of compressed air-powered pneumatic control valve, to electric power source for electric regulating valve to the liquid medium (eg oil) pressure-powered electric hydraulic control valve addition, according to their functions and characteristics of points, linear features, such as the percentage of properties and characteristics of three kinds of the parabola. Fieldbus regulating valve. Many different types of control valve body, valve types are commonly used through single-seat, through two-seater, angular, diaphragm, small flow, three-, eccentric rotation, butterfly, sleeve type, ball and so on. Specific selection, do the following considerations: (1) spool shape structure Mainly based on the selected traffic characteristics and take into account factors such as unbalanced force. (2) The wear resistance When the fluid medium that contain high concentrations of abrasive particles in suspension, the valve's internal materials to be hard. (3) corrosion resistance As the medium is corrosive, as we choose simple valve. (4) medium temperature, pressure, When the medium temperature and pressure variation in high and when the valve core and valve seat should use the material by the temperature and pressure changes in the small valve. (5) Prevention of flashing and cavitation Flashing and cavitation produced only in liquid medium. In the actual production process, the flashing and cavitation will form vibration and noise, shorten the life of the valve, so the choice should be to prevent the valve produces flash valve and cavitation.