Advantages of plug valve

1、旋塞閥用于經(jīng)常操作，啟閉迅速、輕便。

1. The plug valve is used for regular operation, and the opening and closing is fast and light.

2、旋塞閥流體阻力小。

2. The plug valve has small fluid resistance.

3、旋塞閥結(jié)構(gòu)簡(jiǎn)單，相對(duì)體積小，重量輕，便于維修。

3. The plug valve has the advantages of simple structure, small volume, light weight and easy maintenance.

4、密封性能好

4. Good sealing performance

5、不受安裝方向的限制，介質(zhì)的流向可任意。

5. Not limited by the installation direction, the flow direction of media can be arbitrary.

6、無(wú)振動(dòng)，噪聲小。

6. No vibration and low noise.

閘閥的缺點(diǎn):

Disadvantages of gate valve:

1、閘板在開啟和關(guān)閉過(guò)程中始終存在摩擦,因此操作扭矩大,并且在閘板及閥座密封面上易產(chǎn)生劃痕,導(dǎo)致閥門泄漏;

1. Friction always exists during the opening and closing of the ram, so the operating torque is large, and scratches are easy to occur on the sealing surface of the ram and valve seat, resulting in valve leakage;

2、無(wú)自檢泄漏裝置,(即使通過(guò)兩個(gè)閘閥再安裝一小閥達(dá)到此功能,也不能實(shí)現(xiàn)自動(dòng)檢測(cè)功能);

2. No self checking leakage device (even if this function is achieved by installing a small valve through two gate valves, the automatic detection function cannot be realized);

3、對(duì)于含有顆粒雜質(zhì)的介質(zhì),如沙粒,沉積在閥門底部,使閘板無(wú)法完全關(guān)到位,導(dǎo)致閥門的泄漏是非常嚴(yán)重的，(這點(diǎn)對(duì)于閘閥來(lái)說(shuō)是致命的缺點(diǎn))。

3. For the medium containing particle impurities, such as sand, deposited at the bottom of the valve, so that the gate cannot be fully closed in place, resulting in the leakage of the valve is very serious (this is a fatal disadvantage for the gate valve).

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