8211835

Name: Festo 8211835 Quarter turn actuator DFPD-9500-SY-Y-90-RD-F1625
Brand: Festo

Quarter turn actuator DFPD-9500-SY-Y-90-RD-F1625

The Festo part number 8211835 is a double-acting industrial component featuring a kinematic yoke system with a 9500 valve actuator size, an F1625 flange hole pattern, and a 90-degree swivel angle. Operating within a pressure range of 3 bar to 4.6 bar (43.5 psi to 66.7 psi) and certified for safety functions to ISO 13849 and IEC 61508, this unit supports SIL 2 low demand mode or SIL 3 in a redundant architecture. It incorporates an ISO 5211 standard valve connection, a VDI/VDE 3845 NAMUR valve connection, and a VDI/VDE 3845 Size AA 3 connection point for positioners and position sensors. Submit the exact part number, quantity, and application requirements to request a quote.

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Manufacturer: Festo
Part number: 8211835
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Technical Specifications

Size of valve actuator: 9500
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 dened | 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
Certied 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: 13.89 bar
Operating pressure: 0.3 MPa...0.46 MPa | 3 bar...4.6 bar | 43.5 psi...66.7 psi
Nominal operating pressure: 0.463 MPa | 4.63 bar | 67.135 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 certication outside the EU: EPL Db (GB) | EPL Gb (GB)

Engineering context

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Our sourcing response is prepared against Festo 8211835. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.