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原文:
隔膜阀是指在阀体和阀盖内装有一挠性膜或组合隔膜,其关闭件是与隔膜相连接的一种压缩装置。阀痤可以堰形,也可以是直通流道的管壁。   优点:
①操纵机构与介质通路隔开,不但保证了工作介质的纯净,同时也防止管路中介质冲击操纵机构工作部件的可能性,阀杆处不需要采用任 何形式的单独密封,除非在控制有害介质中作这安全设施使用;
②由于工作介质接触的仅仅是隔膜和阀体,二者均可以采用多种不同的材料,因此该阀能理想控制多种工作介质,尤其适合带有化学腐蚀 或悬浮颗粒的介质。
③结构简单,只由阀体、隔膜和阀盖组合件三个部件构成。该阀易于快速拆卸和维修,更换隔膜可以在现场及短时间内完成。
缺点:
①由于受阀体衬里工艺和隔膜制造工艺和限制,较大的阀体衬里和较大的隔膜制造工艺都很难,故隔膜不宜用于较大的管径,一般应用在 DN≤200mm以下的管路上。
②由于受隔膜材料的限制,隔膜阀适用于低压及温度不高的场合。一般不超过180℃;
③调节性能相对较差,只在小范围内调节(一般在关闭至2/3开度时,可用于流量调节)。

更多隔膜阀产品,请登录 http://www.gemofa.org 中国隔膜阀网 ,我们将竭诚为您服务。隔膜 阀的优缺点概述。
以下是参考译文:

译文:
The diaphragm valve is a combination of a flexible membrane or diaphragm is arranged in the valve body and valve cover, the closure of a compression device is connected with the diaphragm. Valve acne can weir shape, also can be the wall straight flow channel.
Advantage.
The control mechanism and the media channels are separated, not only to ensure the purity of the working media, but also to prevent the possibility of the media impact of pipeline control unit mechanism, the stem Department does not require any form of individually sealed, except in the control of harmful medium as the safety facilities use;
The working media only contact with the diaphragm and the valve body, the two can be used in many different materials, so the valve can control a variety of working medium, especially with chemical corrosion or suspended particles of the medium.
It has the advantages of simple structure, only by the valve body, the diaphragm and the valve cover assembly of three component parts. Quick and easy removal of the valve repair, replacement of the diaphragm can be completed on site and within a short time.
Shortcomings:
Because body lining diaphragm process and manufacturing process and limit, the larger body lining and large diaphragm manufacturing process is very difficult, so the diaphragm should not be used for larger diameter, generally used in pipeline DN ≤ 200mm below.
The membrane materials because of the restrictions, diaphragm valves for low pressure and temperature is not high. Generally not more than 180 ℃;
The regulation of the relatively poor performance, control only over a small range (generally in close to the opening degree of 2/3, can be used for flow control).隔膜阀的优缺点概述。

原文标题:“隔膜阀的优缺点概述”

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