8068939 Festo Quarter Turn Actuators

Product Details

• Operating pressure
  2 bar ... 8 bar
• Flange hole pattern
  F14
• Mode of operation
  Single-acting
• Connection for valve positioner and position sensor conforms to standard
  VDI/VDE 3845 size AA 3
• Type of ignition protection for gas
  Ex h IIC T4 Gb X
• Certificate issuing authority
  DNVGL TAP00001CE German Technical Control Board (TÜV) Rheinland 968/V 1106.00/19
• Information on operating and pilot media
  Dew point min. 10 °C below the ambient and medium temperature Operation with oil lubrication possible (required for further use)
• Torque at nominal operating pressure and 0° swivel angle
  796.3 Nm
• Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
  43.5 l
• Note on materials
  RoHS-compliant
• Material of bearing
  POM
• Devices type according to VDMA 66413
  Safety device
• PFH
  1.01E-7
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• Depth shaft connection
  38 mm
• Symbol
  00991266
• Certified 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
• Type of (ignition) protection for dust
  Ex h IIIC T105°C Db X
• Operating medium
  Compressed air as per ISO 8573-1:2010 [7:4:4]
• Spring return torque at 0° swivel angle
  479.4 Nm
Spring return torque with 90° swivel angle
798.6 Nm
Material of sub-base
Wrought aluminum alloy, anodized
Material of spring
Spring steel
MTTFd
1126 years
Size of valve actuator
1200
Maritime classification
See certificate
Mounting position
Any
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
ATEX category gas
II 2G
Explosive ambient temperature
-20°C <= Ta <= +80°C
Explosion prevention and protection
Zone 1 (ATEX) Zone 22 (ATEX)
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Torque at nominal operating pressure and 90° swivel angle
477.2 Nm
Product weight
43022 g
Pneumatic connection
1/4 NPT
Material of piston
Die-cast aluminum
Shaft material
High-alloy stainless steel
Safety function
The fundamental safety function is that the control valve moves to the switching position when the compressed air is turned off. It is reset by spring force.
Swivel angle
90 deg
Standard connection for valve
ISO 5211
Design
Gear rack/pinion
Storage temperature
-20 °C ... 60 °C
PFD
7.8E-4
Seals material
NBR
Cam material
Steel
Nominal operating pressure
6 bar
End-position adjusting range at 0°
-5 deg ... 5 deg
Type code
DFPD
Closing direction
Clockwise closing
Safety integrity level (SIL)
Up to SIL 2 low demand mode up to SIL 1 high demand mode
ATEX category for dust
II 2D
Ambient temperature
-20 °C ... 80 °C
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
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.
Shaft connection
T36
Cover material
Die-cast aluminum, coated
Housing material
Wrought aluminum alloy, anodized
Material of screws
High-alloy stainless steel

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