8068931 Festo Quarter Turn Actuators

Product Details

• Maritime classification
  See certificate
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• Mode of operation
  Single-acting
• Connection for valve positioner and position sensor conforms to standard
  VDI/VDE 3845 size AA 2
• Type of ignition protection for gas
  Ex h IIC T4 Gb X
• Explosion prevention and protection
  Zone 1 (ATEX) Zone 22 (ATEX)
• Torque at nominal operating pressure and 90° swivel angle
  252.8 Nm
• Spring return torque at 0° swivel angle
  258.1 Nm
• Shaft connection
  T27
• Seals material
  NBR
• Cam material
  Steel
• Nominal operating pressure
  6 bar
• MTTFd
  1126 years
• Swivel angle
  90 deg
• Type code
  DFPD
• Closing direction
  Clockwise closing
• 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
• Explosive ambient temperature
  -20°C <= Ta <= +80°C
• 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
  465.5 Nm
Product weight
26268 g
Note on materials
RoHS-compliant
Housing material
Wrought aluminum alloy, anodized
Shaft material
High-alloy stainless steel
Size of valve actuator
700
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.
Flange hole pattern
F1012
Standard connection for valve
ISO 5211
Symbol
00991266
ATEX category gas
II 2G
Ambient temperature
-20 °C ... 80 °C
Storage temperature
-20 °C ... 60 °C
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.
Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
24.5 l
Material of spring
Spring steel
Material of bearing
POM
Devices type according to VDMA 66413
Safety device
PFH
1.01E-7
Depth shaft connection
29 mm
Design
Gear rack/pinion
Safety integrity level (SIL)
Up to SIL 2 low demand mode up to SIL 1 high demand mode
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]
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
PFD
7.8E-4
Pneumatic connection
1/4 NPT
Material of screws
High-alloy stainless steel
Operating pressure
2 bar ... 8 bar
End-position adjusting range at 0°
-5 deg ... 5 deg
Mounting position
Any
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
ATEX category for dust
II 2D
Certificate issuing authority
DNVGL TAP00001CE German Technical Control Board (TÜV) Rheinland 968/V 1106.00/19
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Spring return torque with 90° swivel angle
470.7 Nm
Material of sub-base
Wrought aluminum alloy, anodized
Cover material
Die-cast aluminum, coated
Material of piston
Die-cast aluminum

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