DFC / DFOSpring & Diaphragm Actuator
DFC & DFO Linear Actuators
Large-diaphragm spring-and-diaphragm actuators with fail-safe positioning.
Large-diaphragm-area actuators for low-pressure operation. A spring provides fail-safe positioning on loss of pneumatic supply, where DFC fails closed and DFO fails open, to automate control valves for throttling or on/off service.
Key Features
- Fail-closed (DFC) or fail-open (DFO) action
- Open yoke / open valve stem design option
- Handwheels and travel stops
- Versatile instrument mounting
Industries
Oil & GasPetrochemicalPower GenerationWater TreatmentFertilizers
Specifications
| Input Signal | 3 to 15 PSIG or 6 to 30 PSIG |
|---|---|
| Valve Stem | 3/8", 1/2", 3/4" |
| Effective Area | 46 to 220 in² (sizes 1046 to 3220) |
| Temperature | -40°F to 180°F (-40°C to 82°C) |
Specifications transcribed from the manufacturer datasheet. Confirm final selection with the product catalog or on request.
Documentation
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