德國REVO氣缸 REVO? 系列氣動執行機構是驅動角行程閥門的理想產品，尤其是蝶閥、球閥和旋塞閥。此外，還可以使用在90度或者180度旋轉的機構上。 德國REVO氣缸通過一體化活塞/齒條與齒輪的嚙合，活塞的線性運動被轉化成為所需要的90o角行程運動。 所有的REVO氣動執行器機構都適用于開關或者調節控制閥門。雙作用執行機構采用氣源從兩個方向（開啟和關閉）進氣從而進行驅動，而單作用執行機構則是采用彈簧打開或者關閉閥門。如出現氣源故障，執行機構就回到故障安全的位置。 The REVO? brand is the standard for excellence and performance in actuator technology and is widely recognized in the process industries as a leader in quality and innovation. That innovation is partnered with a manufacturing excellence to drive advances in product technology. With our combined knowledge and experience we can offer the optimum actuator for any application. The REVO Series R range of actuators is ideal for operating quarter-turn valves, especially butterfly, ball and plug valves. Additional areas of applications are 90o or 180o rotary motion. The linear counter movement of the pistons is transmitted into the required 90o travel by means of the integrated racks of the pistons and the pinion. All REVO actuators are suitable for on/off or modulating control operations. Double-acting actuators are operated by air in both directions (open and closed) whilst single-acting actuators can be supplied with springs to open or close. On air failure these will then go into a fail-safe position.