DFC / DFO

Model DFC (Fail Closed) and DFO (Fail Open) linear spring and diaphragm actuators are large diaphragm area actuators that allow for low-pressure operation. The spring provides fail safe positioning for a control valve on loss of pneumatic supply pressure. Both DFC and DFO actuators can be used to automate control valves for throttling or on/off control of liquids or gases.

• 3-15 PSIG (0.21-1.03 BARG) or 6-30 PSIG (0.41-2.07 BARG) Input Signal
• 3/8" (9.5mm) | 1/2" (12.7mm) | 3/4" (19.1mm) Valve Stem Compatibility
• 2-1/8" (54mm) | 2-13/16" (71mm) | 3-9/16" (90mm) Yoke Boss Size
• -40°F to 180°F (-40°C to 82°C) Standard Temperature Limitations