549678 Festo Quarter Turn Actuators

Product Details

• Flange hole pattern
  F12
• Depth shaft connection
  38.5 mm
• Mode of operation
  Single-acting
• Operating pressure
  3.5 bar ... 8.4 bar
• Ambient temperature
  -20 °C ... 80 °C
• Size of valve actuator
  0720
• End-position adjusting range at nominal swivel angle
  81 deg ... 91 deg
• Standard connection for valve
  ISO 5211
• Closing direction
  Clockwise closing
• Safety integrity level (SIL)
  Up to SIL 2 high demand mode Up to SIL 2 low demand mode
• ATEX category gas
  II 2G
• Explosive ambient temperature
  -20°C <= Ta <= +60°C
• Cushioning
  No cushioning
• Symbol
  00991266
• Connection pressure for spring force
  3.5 bar
• ATEX category for dust
  II 2D
• Operating medium
  Compressed air as per ISO 8573-1:2010 [7:4:4]
• Corrosion resistance class (CRC)
  3 - High corrosion stress
• Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
  29.4 l
• Seals material
  FPM PUR
End-position adjusting range at 0°
-1 deg ... 9 deg
Information on the end-position adjusting range
One end position optionally adjustable
Position sensing
None
Design
Scotch yoke system
Nominal operating pressure
5.6 bar
Type of (ignition) protection for dust
Ex h IIIC T85°C...T200°C Db X
Information on operating and pilot media
Operation with oil lubrication possible (required for further use)
Torque at nominal operating pressure and 50° swivel angle
495 Nm
Spring return torque with 50° swivel angle
225 Nm
Note on materials
RoHS-compliant
Shaft material
High-alloy steel
Swivel angle
90 deg
Type code
DAPS
Mounting position
Any
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
Type of ignition protection for gas
Ex h IIC T6...T3 Gb X
Explosion prevention and protection
Zone 1 (ATEX) Zone 22 (ATEX)
Torque at nominal operating pressure and 0° swivel angle
900 Nm
Spring return torque with 90° swivel angle
450 Nm
Product weight
33000 g
Housing material
Wrought aluminum alloy
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Torque at nominal operating pressure and 90° swivel angle
750 Nm
Spring return torque at 0° swivel angle
300 Nm
Pneumatic connection
G1/4
Cover material
Wrought aluminum alloy
Material number for shaft
1.4305
Note about the torque
The actuator's operating torque must not be higher than the maximum permissible torque listed in ISO 5211, based on the size of the mounting flange and the coupling.
Spring force
2
Shaft connection
T36
Material of screws
High-alloy steel

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