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Festo
8211837
Quarter turn actuator DFPD-4500-SY-Y-90-RD-F1625
The Festo part number 8211837 is an industrial component featuring a double-acting structural design with a kinematic yoke system, a 4500 valve actuator size, and an ISO 5211 standard valve connection. This unit provides a 90-degree swivel angle, an end-position adjusting range of -5 degrees to 5 degrees at both 0 degrees and the nominal swivel angle, and an operating pressure range of 3 bar to 6 bar. It includes VDI/VDE 3845 compliance for valve and positioner connections, a CE marking as per the EU explosion protection directive (ATEX), and safety function certification for use up to SIL 2 in low demand mode or SIL 3 in a redundant architecture according to ISO 13849 and IEC 61508. Submit the exact part number, quantity, and application requirements to request a quote.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 8211837
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 8211837.
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
- 4500
- Flange hole pattern
- F1625
- 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
- 57 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 3
- 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
- 18 bar
- Operating pressure
- 0.3 MPa...0.6 MPa | 3 bar...6 bar | 43.5 psi...87 psi
- Nominal operating pressure
- 0.55 MPa | 5.5 bar | 79.75 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 8211837. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.