USA-type 754-ATO pneumatic actuator type AC-OS
Direction „Air to open–ATO“
Pneumatic diaphragm actuators have proved as low-maintenance, reliable and economical actuator type for control valves. With accessories like i/p-converters or i/p-positioners they can easily be connected to electrical controllers or micro-processor-based control systems with a 4-20 mA output. Another advantage results in the short and precise floating times.
The instrument signal 0.2 – 1.0 bar generates a force at the diaphragm (11) that is balanced by the spring (20) placed in the actuator. The strength of the preload determines the signal range as well as the rated travel, adjustable with spring nut (16).