具有划时代意义的两级操作执行器，可实现阀门的三个位置状态：全关、全开和半开。阀门开度可自由设定，最大可达45度。这种执行器也可用于计量阀。此外，该产品还可用于防止水锤现象的发生。
Epoch-making 2-stage operation
actuator allowing for 3 valve positions:
fully closed, fully opened, and half
opened positions. The opening can be
set freely up to 45 degrees. This actuator
can also be used for metering valves. In
addition, the product can be used to
prevent water hammers