8047621 Festo Quarter Turn Actuators

Product Details

• Product weight
  1371 g
• Devices type according to VDMA 66413
  Safety device
• Swivel angle
  90 deg
• Type code
  DFPD
• Valve connection conforms to standard
  VDI/VDE 3845 (NAMUR)
• 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
• Ambient temperature
  -20 °C ... 80 °C
• Corrosion resistance class (CRC)
  2 - Moderate corrosion stress
• Torque at nominal operating pressure and 90° swivel angle
  3.8 Nm
• Operating pressure
  2 bar ... 8 bar
• PFH
  1.01E-7
• End-position adjusting range at 0°
  -5 deg ... 5 deg
• Standard connection for valve
  ISO 5211
• Connection for valve positioner and position sensor conforms to standard
  VDI/VDE 3845 size AA 1
• ATEX category for dust
  II 2D
• CE marking (see declaration of conformity)
  as per EU explosion protection directive (ATEX)
• Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
  0.8 l
• Material of sub-base
  Wrought aluminum alloy, anodized
• Material of bearing
  POM
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
F04
Mode of operation
Single-acting
Safety integrity level (SIL)
Up to SIL 2 low demand mode up to SIL 1 high demand mode
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 0° swivel angle
7.4 Nm
Storage temperature
-20 °C ... 60 °C
Shaft connection
T11
Cover material
Die-cast aluminum, coated
Shaft material
Steel, nickel-plated
Nominal operating pressure
3 bar
Maritime classification
See certificate
Depth shaft connection
12 mm
Design
Gear rack/pinion
ATEX category gas
II 2G
Operating medium
Compressed air as per ISO 8573-1:2010 [7:4:4]
Spring return torque at 0° swivel angle
3.6 Nm
PFD
7.8E-4
Housing material
Wrought aluminum alloy, anodized
Material of screws
High-alloy stainless steel
Pneumatic connection
G1/8
Size of valve actuator
20
MTTFd
1126 years
End-position adjusting range at nominal swivel angle
-5 deg ... 5 deg
Mounting position
Any
Symbol
00991266
Closing direction
Clockwise closing
Type of (ignition) protection for dust
Ex h IIIC T105°C Db 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)
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 return torque with 90° swivel angle
7.1 Nm
Note on materials
RoHS-compliant
Seals material
NBR
Cam material
Cast stainless steel
Material of spring
Spring steel
Material of piston
Die-cast aluminum

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