回转阀采用圆柱形外壳。每个出口由一个可调节的闸门进行密封。通过转动驱动轴，闸板从一个材料出口切换到另一个材料出口。采用弹性密封（密封被弹簧向壳体内壁方向挤压），确保出口处密封无尘。 The drive can be pneumatic, motoric or manual and is flanged directly to the rotating shaft, resulting in the highest safety possible by omitting the rods. The drives are designed with sufficient reserves so that even under aggravated conditions a safe operation is ensured.