8102879 Festo Quarter Turn Actuators

Product Details

• Maritime classification
  See certificate
• Type code
  DFPD
• Design
  Gear rack/pinion
• Connection for valve positioner and position sensor conforms to standard
  VDI/VDE 3845 size AA 2
• Type of (ignition) protection for dust
  Ex h IIIC T105°C Db X
• Nominal operating pressure
  3.5 bar
• 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
  F12
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• Depth shaft connection
  29 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 gas
  Ex h IIC T4 Gb X
• 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
  279.5 Nm
• Spring return torque at 0° swivel angle
  142.6 Nm
• Product weight
  24723 g
• Material of sub-base
  Wrought aluminum alloy, anodized
• Material of bearing
  POM
• Cam material
  Steel
Size of valve actuator
700
MTTFd
1126 years
Standard connection for valve
ISO 5211
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
ATEX category for dust
II 2D
Ambient temperature
-20 °C ... 80 °C
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Storage temperature
-20 °C ... 60 °C
Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
24.5 l
Note on materials
RoHS-compliant
Housing material
Wrought aluminum alloy, anodized
Operating pressure
2 bar ... 8 bar
Devices type according to VDMA 66413
Safety device
Swivel angle
90 deg
Mode of operation
Single-acting
Safety integrity level (SIL)
Up to SIL 2 low demand mode up to SIL 1 high demand mode
Explosive ambient temperature
-20°C <= Ta <= +80°C
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
Spring return torque with 90° swivel angle
260.1 Nm
Pneumatic connection
G1/4
Material of spring
Spring steel
Material of screws
High-alloy stainless steel
PFH
1.01E-7
End-position adjusting range at 0°
-5 deg ... 5 deg
Mounting position
Any
Closing direction
Clockwise closing
ATEX category gas
II 2G
Explosion prevention and protection
Zone 1 (ATEX) Zone 22 (ATEX)
Operating medium
Compressed air as per ISO 8573-1:2010 [7:4:4]
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.
PFD
7.8E-4
Seals material
NBR
Material of piston
Die-cast aluminum
Certificate issuing authority
DNVGL TAP00001CE German Technical Control Board (TÜV) Rheinland 968/V 1106.00/19
Torque at nominal operating pressure and 90° swivel angle
161.9 Nm
Shaft connection
T27
Cover material
Die-cast aluminum, coated
Shaft material
High-alloy stainless steel

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