Siemens Valve Actuator Assemblies VA Assemblies are available with the following actuators: SQM33 actuators with LMV3 Linkageless systems SQM45 or SQM48 actuators with LMV5 Linkageless systems SQM40/41 Synchro Modulating Actuators SQM50/53/56 Modulating Actuators Buy Now Read more