The CVS Series 1051/1052 Diaphragm Rotary Actuator is a pneumatic spring-return actuator designed for use with rotary-shaft control valves. This is a direct-acting actuator, and an increase in the loading pressure extends the diaphragm rod out of the spring barrel. The CVS Type 1051/1052 Actuator is suitable for on-off service, or for throttling service when used with a valve positioner. The Series 1052 Actuator includes a spring adjuster, which is suitable for use with or without a positioner.
The stroking time is dependent on the actuator size, rotation, spring rate, initial spring compression, and supply pressure. If the stroking time is critical for your application, consult CVS Controls Ltd. for proper settings.
The travel indicator is a combination graduated disk and pointer located on the actuator end of the valve shaft. Fixed travel stops are an available option.
