For larger valves, heavy duty VS series scotch yoke type actuators provide nonlinear torque characteristic with the highest possible mechanical advantage for seating and unseating the valve.

• 对于大型阀门，重型VS系列挡车轭类型的涡轮执行机构能够提供非线性特性的扭矩，具有最好的机械性能，适用于阀座和无阀座阀门。