Stainless steel pneumatic flange ball valve works by rotating valve love to make the valve flow or occlusion.

不锈钢气动法兰球阀的工作原理是靠旋转阀恋来使阀门畅通或闭塞。

youdao

Many flange for rotating: circular flange and square flange.

多种法兰可供选转：圆型法兰和方型法兰；

youdao

This paper introduces a new kind of evaporators in which a self-rotating spiral and a driving wheel with spiral flange are installed in heating chamber.

盐蒸发器自动清洗技术 ，是由循环流动的蒸发溶液带动加热管内的螺旋扭带旋转来实现的。

youdao

The shot-blasted, satin-brushed and polished rotating bezel bears the names of 24 world cities, symbols of the international 24 time zones on its brown upper flange.

FORBES: Richard Mille RM58-01 Tourbillon World Timer