What is the difference between different valves? For example: the difference between gate valve and butterfly valve, the difference between ball valve and butterfly valve, the difference between ball valve and gate valve, etc. Let's introduce the differences between different valves!

閘閥與蝶閥的區(qū)別

Difference between gate valve and butterfly valve

動作方式的區(qū)別：閘閥屬于直行程閥門，即閥桿帶動閥板做上下垂直運動，完成閘閥的啟閉所以閘閥的流阻小，但是因其開啟高度較高，故啟閉速度較慢。而蝶閥屬于角行程閥門，即蝶閥的閥板圍繞閥軸做90°旋轉，完成蝶閥的啟閉動作。

Difference in action mode: the gate valve is a straight stroke valve, that is, the valve stem drives the valve plate to move vertically up and down to complete the opening and closing of the gate valve, so the flow resistance of the gate valve is small, but the opening and closing speed is slow due to its high opening height. The butterfly valve is an angle stroke valve, that is, the valve plate of the butterfly valve rotates 90 ° around the valve axis to complete the opening and closing action of the butterfly valve.

作用、用途的區(qū)別：閘閥流阻小，密封性能好，閘閥閥板和介質流向是垂直角度，如果閘閥在閥板開關不到位，介質對閥板的沖刷使閥板顫動，易照成閘閥密封損壞。所以多用于要求密封嚴格并且不需要頻繁啟閉的管道做截止用，而不適合做調節(jié)管道介質參數(shù)的作用。因為啟閉速度較慢，也不適用緊急切斷的場合。閘閥使用工況范圍很廣，在高溫、低溫、高壓、低壓等工況都可以使用，在截止的場合使用壽命長。

Difference between function and purpose: the gate valve has small flow resistance and good sealing performance. The flow direction of the gate valve plate and the medium is a vertical angle. If the gate valve is not opened and closed in place on the valve plate, the scouring of the medium on the valve plate will make the valve plate vibrate, which is easy to damage the seal of the gate valve. Therefore, it is mostly used for cut-off of pipelines that require strict sealing and do not need to be opened and closed frequently, and is not suitable for regulating pipeline medium parameters. Because the opening and closing speed is slow, it is not suitable for emergency cut-off. The gate valve can be used in a wide range of working conditions, such as high temperature, low temperature, high pressure and low pressure. It has a long service life in the cut-off situation.

球閥和蝶閥的區(qū)別

Difference between ball valve and butterfly valve

選型和應用上的區(qū)別：通常小口徑(一般指DN50以下)選用螺紋球閥比較經(jīng)濟，DN50以上球閥一般采用法蘭連接，因為加工工藝和材料的原因大口徑球閥都比較昂貴，但是因為球閥密封性和本身的流量特性在一些行業(yè)應用廣泛,比如造紙工業(yè)、天然氣行業(yè)以及高壓領域等等。蝶閥一般用于大口徑場合(通常指DN50以上)，結構簡單、價格相對低廉，壓力一般在PN16以下(偏心蝶閥一般壓力在PN40以下)，和球閥相比蝶閥的密封性能較差。

Differences in type selection and application: generally, threaded ball valves with small diameter (generally below DN50) are more economical, and ball valves above DN50 are generally connected with flanges. Large diameter ball valves are more expensive due to processing technology and materials. However, because of the tightness and flow characteristics of ball valves, they are widely used in some industries, such as paper industry Natural gas industry and high pressure field, etc. Butterfly valve is generally used in large-diameter occasions (usually above DN50), with simple structure and relatively low price. The pressure is generally below PN16 (eccentric butterfly valve is generally below PN40). Compared with ball valve, the sealing performance of butterfly valve is poor.

球閥和閘閥的區(qū)別

Difference between ball valve and gate valve

密封面的區(qū)別：球閥的密封面是球面;閘閥的密封面是平面。

Difference of sealing surface: the sealing surface of ball valve is spherical; The sealing surface of the gate valve is flat.

運動方式的區(qū)別：球閥的閥芯是繞自己軸線作旋轉運動的;閘閥的閥板是沿軸線作升降運動的。

The difference of motion mode: the spool of the ball valve rotates around its own axis; The valve plate of the gate valve moves up and down along the axis.

功能上的區(qū)別：閘閥可以通過開啟度調節(jié)流量;球閥則不便于做到這一點。

Functional difference: the gate valve can adjust the flow through the opening; Ball valves are not easy to do this.

以上就是小編為大家介紹的關于不用閥門之間的卻區(qū)別介紹，希望可以幫助到您，更多精彩內容可以點擊http://www.bjstar-river.com聯(lián)系在線客服進行解答。

The above is the difference between not using valves introduced by Xiaobian. I hope it can help you. More wonderful contents can be clicked http://www.bjstar-river.com Contact online customer service for answers.