549671

Name: Festo 549671 Quarter turn actuator DAPS-3840-090-R-F16
Brand: Festo

Quarter turn actuator DAPS-3840-090-R-F16

The Festo part number 549671 is a double-acting industrial component featuring a 3840 valve actuator size, an F16 flange hole pattern, and a kinematic yoke system with a 90-degree swivel angle. Operating at a nominal pressure of 0.56 MPa within a 0.1 MPa to 0.84 MPa range, this un-cushioned unit provides right-closing operation, an ISO 5211 standard valve connection, and a VDI/VDE 3845 NAMUR interface with SIL 2 low demand mode capabilities and ATEX and UKCA explosion protection markings. Submit the exact part number, quantity, and application requirements to receive a formal quotation.

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Manufacturer: Festo
Part number: 549671
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Technical Specifications

Size of valve actuator: 3840
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: 85 deg...95 deg
Depth shaft connection: 49 mm
Standard connection for valve: ISO 5211
Cushioning: No cushioning
Mounting position: Any
Mode of operation: Double-acting
Structural design: Kinematic yoke system
Position sensing: None
Closing direction: Closes to the right
Valve connection conforms to standard: VDI/VDE 3845 (NAMUR)
Safety integrity level (SIL): Up to SIL 2 low demand mode
Operating pressure: 0.1 MPa...0.84 MPa | 1 bar...8.4 bar
Nominal operating pressure: 0.56 MPa | 5.6 bar
Max. swivel frequency at 6 bar: 1 Hz
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 prevention and protection: Zone 1 (ATEX) | Zone 2 (ATEX) | Zone 21 (ATEX) | Zone 22 (ATEX)
Certicate issuing authority: German Technical Control Board North (TÜV Nord) 212170801
ATEX category gas: II 2G
ATEX category for dust: II 2D
Type of ignition protection for gas: Ex h IIC T6...T3 Gb X
Type of (ignition) protection for dust: Ex h IIIC T85°C...T200°C Db X
Explosive ambient temperature: -20°C <= Ta <= +60°C

Engineering context

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Technical verification

Our sourcing response is prepared against Festo 549671. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.