Pneumatic actuators
RTK pneumatic actuators are specifically designed for RTK control valves. They are robustly built and equipped with a durable diaphragm. Their main feature is the very fast adjustment, enabling them to follow almost any process with high accuracy.
There are several versions available with different drive capacities. As standard, these pneumatic actuators are supplied with either a Siemens Sipart PS2 or a Schneider Foxboro SRD998 positioner for precise valve position control.
Pneumatic actuator coding
| Type | Diaphragm (cm2) | Stroke (mm) |
|---|---|---|
| ST6115 | 120 | 20-25 |
| ST6135 | 280 | 35 |
| ST6160 | 530 | 40-60 |
| ST6175 | 1000 | 60-100 |
Pneumatic actuator options
Available in normally open (NO) or normally closed (NC) versions
Support for various bus communication systems, including Profibus
Optional manual override
Available in explosion-proof version (ATEX certified)
Optional additional switches for valve position indication