8102865 Festo Quarter Turn Actuators

Product Details

• Type code
  DFPD
• Mode of operation
  Single-acting
• 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
• Certificate issuing authority
  DNVGL TAP00001CE German Technical Control Board (TÜV) Rheinland 968/V 1106.00/19
• Torque at nominal operating pressure and 0° swivel angle
  347.1 Nm
• Spring return torque at 0° swivel angle
  170 Nm
• Product weight
  18518 g
• Shaft connection
  T27
• Material of piston
  Die-cast aluminum
• Material of screws
  High-alloy stainless steel
• Nominal operating pressure
  6 bar
• Maritime classification
  See certificate
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• 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
• Explosive ambient temperature
  -20°C <= Ta <= +80°C
• Operating medium
  Compressed air as per ISO 8573-1:2010 [7:4:4]
• Storage temperature
  -20 °C ... 60 °C
• Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
  17.2 l
Cover material
Die-cast aluminum, coated
Cam material
Steel
Operating pressure
2 bar ... 8 bar
PFH
1.01E-7
Depth shaft connection
29 mm
Mounting position
Any
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
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 90° swivel angle
181 Nm
Spring return torque with 90° swivel angle
336.1 Nm
Material of sub-base
Wrought aluminum alloy, anodized
Housing material
Wrought aluminum alloy, anodized
Material of bearing
POM
Size of valve actuator
480
MTTFd
1126 years
Swivel angle
90 deg
Standard connection for valve
ISO 5211
Symbol
00991266
ATEX category gas
II 2G
Ambient temperature
-20 °C ... 80 °C
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
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.
Pneumatic connection
1/4 NPT
Seals material
NBR
Devices type according to VDMA 66413
Safety device
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 0°
-5 deg ... 5 deg
Design
Gear rack/pinion
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
Type of (ignition) protection for dust
Ex h IIIC T105°C Db X
Explosion prevention and protection
Zone 1 (ATEX) Zone 22 (ATEX)
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
PFD
7.8E-4
Note on materials
RoHS-compliant
Material of spring
Spring steel
Shaft material
High-alloy stainless steel

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