What is the difference between the M1500 and the M1500A actuators?
Why has the "A" been dropped from the specification number?
Originally there were two specifications;
M1500A which fitted to the control valve using a "U-Bolt".
M1500A-VB which fitted to the valve using a "Screw Mount".
The M1500 actuator is fitted to the valve using an "U-Bolt", if a "Screw Mount" is required, then the appropriate linkage kit should be used.