所謂蝶閥，也可以稱為翻板閥，是一種結構簡單的關斷閥。它的閥芯為圓盤形的蝶板結構設計，可沿垂直管道軸線的立軸轉動，圍繞閥軸旋轉來達到開啟與關閉。

The so-called butterfly valve, also known as a flap valve, is a simple shut-off valve. Its valve core is designed with a disc shaped butterfly plate structure, which can rotate along the vertical axis of the pipeline and rotate around the valve axis to achieve opening and closing.

　　據了解，蝶閥結構簡單、體積小、重量輕、耗材少、驅動力矩小，以及操作簡單方便，并且還可以同時具有良好的流量調節功能和關閉密封特性，是近十幾年來發展非常快的閥門品種之一。

It is understood that butterfly valves have a simple structure, small volume, light weight, low consumables, small driving torque, and simple and convenient operation. They can also have good flow regulation function and closing sealing characteristics at the same time, making them one of the rapidly developing valve varieties in the past decade.

　　為了更好地滿足高低溫度、強沖蝕、長壽命等工業用戶應用的使用要求，密封蝶閥得到了很大的發展。與此同時，蝶閥的使用的品種和數量目前仍在繼續擴大，并向高溫、高壓、大口徑、高密封性、耐腐蝕性強、不易老化、摩擦系數低、長壽命等，以及一閥多功能方向快速發展。據介紹，蝶閥可靠性及其他性能指標均達到較高水平。

In order to better meet the usage requirements of industrial users such as high and low temperatures, strong erosion, and long service life, sealed butterfly valves have made great progress. At the same time, the variety and quantity of butterfly valves used are still expanding, and are rapidly developing towards high temperature, high pressure, large diameter, high sealing performance, strong corrosion resistance, low aging resistance, low friction coefficient, long service life, as well as one valve multifunctional direction. It is reported that the reliability and other performance indicators of butterfly valves have reached a high level.

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