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Festo
8211838
Quarter turn actuator DFPD-3500-SY-Y-90-RD-F16
The Festo 8211838 is a double-acting industrial component featuring a size 3500 valve actuator with an F16 flange hole pattern and a kinematic yoke system structural design. This unit provides a 90-degree swivel angle with an end-position adjusting range of -5 to 5 degrees at both 0 degrees and the nominal swivel angle, alongside a 48 mm shaft connection depth and right-closing direction. It operates within an operating pressure range of 3 to 5.4 bar (43.5 to 78.3 psi) with a nominal operating pressure of 5.38 bar and a burst pressure of 16.14 bar, conforming to ISO 5211 for valve connections and VDI/VDE 3845 (NAMUR) for positioners and sensors. Certified for safety functions up to SIL 2 in low demand mode and SIL 3 in a redundant architecture per ISO 13849 and IEC 61508, the component includes CE marking as per the EU explosion protection directive (ATEX) and supports mounting in any position. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
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- Manufacturer
- Festo
- Part number
- 8211838
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8211838.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size of valve actuator
- 3500
- Flange hole pattern
- F16
- Swivel angle
- 90 deg
- End-position adjusting range at 0°
- -5 deg...5 deg
- End-position adjusting range at nominal swivel angle
- -5 deg...5 deg
- Depth shaft connection
- 48 mm
- Standard connection for valve
- ISO 5211
- Mounting position
- Any
- Mode of operation
- Double-acting
- Structural design
- Kinematic yoke system
- Closing direction
- Closes to the right
- Valve connection conforms to standard
- VDI/VDE 3845 (NAMUR)
- Connection point for positioner and position sensor conforms to
- VDI/VDE 3845 Size AA 2
- Safety function
- The safety function consists of the actuator switching to the dened | safety switching position. This switching movement is achieved by | pressurizing the corresponding pressure chamber with compressed air. | The value of the torque generated depends on the pressure difference | between the two pressure chambers separated by the piston.
- Safety integrity level (SIL)
- Up to SIL 2 low demand mode | up to SIL 3 in a redundant architecture
- Certied for safety function to ISO 13849 and IEC 61508 (SIL)
- Product can be used in safety-related parts of control systems up to SIL | 2, low demand | up to SIL 3 in a redundant architecture
- Burst pressure
- 16.14 bar
- Operating pressure
- 0.3 MPa...0.54 MPa | 3 bar...5.4 bar | 43.5 psi...78.3 psi
- Nominal operating pressure
- 0.538 MPa | 5.38 bar | 78.01 psi
- CE marking (see declaration of conformity)
- as per EU explosion protection directive (ATEX)
- UKCA marking (see declaration of conformity)
- acc. to UK EX instructions
- Explosion protection certication outside the EU
- EPL Db (GB) | EPL Gb (GB)
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 8211838. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.