蝶阀[BUTTERFLY VALVE]

蝶阀是用随阀杆转动的圆形蝶板作启闭件,以实现启闭动作的阀门.蝶阀主要用截断阀使用,亦可设计成具有调节或截断兼调节的功能.目前蝶阀在低压大中口径管道上的使用越来越多

Butterfly valve is on/off by the turning of the stem which operate the round butterfly disc. It is mainly used as cut-off valve and also can be designed as regulating or cut-off / regulating combined valve. currently , butterfly is mainly used in the low pressure large size pipelines.

蝶阀的蝶板安装于管道的直径方向。在蝶阀阀体圆柱形通道内，圆盘形蝶板绕着轴线旋转，旋转角度为0°~90°之间，旋转到90°时，阀门则牌全开状态。

butterfly valve panels installed at the Tip of the diameter pipeline direction. In butterfly valve body flight corridors, the disc-shaped Tip boards around rotary axis, rotation angle for 0° -90 meridian east between rotary to +90, the valves are open all licence conditions.

蝶阀结构简单、体积小、重量轻，只由少数几个零件组成。而且只需旋转90°即可快速启闭，操作简单，同时该阀门具有良好的流体控制特性。蝶阀处于完全开启位置时，蝶板厚度是介质流经阀体时唯一的阻力，因此通过该阀门所产生的压力降很小，故具有较好的流量控制特性。蝶阀有弹密封和金属的密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。

butterfly valve structure simple, small size, light weight, only by a few parts. But it can be rapidly open and close-90E, simple to operate, while the fluid control valves have good character. butterfly valve a fully open position, Tip board thickness is only when the medium flows through body resistance, the pressure generated by the air valves small, it has a better flow control characteristics. butterfly valve a metal shells sealed and the two sealed sealed patterns. Flexible sealed valves, seal ring can embed in body or peripheral boards to Tip.