Pneumatic Actuators up to 700 cm² Type 3271 and Type 3277 for integral positioner attachment
This document provides technical specifications and ordering information for Type 3271 and Type 3277 pneumatic actuators. These linear actuators are specifically designed for integral attachment to SAMSON Series 240, 250, and 280 Control Valves, as well as the Type 3510 Micro-flow Valve.
The actuators feature a rolling diaphragm with internal springs and offer various configurations including different diaphragm areas (60 to 700 cm²), materials (sheet steel, stainless steel, aluminum), and fail-safe actions. Key features include low overall height, high response speed, and the ability to adjust bench ranges without special tools.
| Diaphragm area range | 60 to 700 cm² |
|---|---|
| Rated travel | 7.5 to 30 mm |
| Max supply pressure (throttling) | 6 bar |
| Operating temperature range | -50 to +120 °C |
| Diaphragm material | NBR or EPDM |
They are designed for integral attachment to Series 240, 250, and 280 Control Valves and the Type 3510 Micro-flow Valve.
Yes, no special tools are required to change the bench range or to reverse the actuator action.