8084139 Festo Quarter Turn Actuators

Product Details

• Operating pressure
  2 bar ... 8 bar
• MTTFd
  1126 years
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• Type code
  DFPD
• Connection for valve positioner and position sensor conforms to standard
  VDI/VDE 3845 size AA 3
• Explosive ambient temperature
  -20°C <= Ta <= +80°C
• Explosion prevention and protection
  Zone 1 (ATEX) Zone 22 (ATEX)
• Torque at nominal operating pressure and 0° swivel angle
  593.5 Nm
• Spring return torque with 90° swivel angle
  595 Nm
• Pneumatic connection
  1/4 NPT
• Material of sub-base
  Wrought aluminum alloy, anodized
• Material of bearing
  POM
• Devices type according to VDMA 66413
  Safety device
• Maritime classification
  See certificate
• End-position adjusting range at 0°
  -5 deg ... 5 deg
• Depth shaft connection
  29 mm
• Symbol
  00991266
• ATEX category for dust
  II 2D
• Ambient temperature
  -20 °C ... 80 °C
• Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
  31.5 l
Seals material
NBR
Shaft material
Steel, nickel-plated
Flange hole pattern
F1012
Mounting position
Any
Closing direction
Clockwise closing
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
Certificate issuing authority
DNVGL TAP00001CE German Technical Control Board (TÜV) Rheinland 968/V 1106.00/19
Storage temperature
-20 °C ... 60 °C
Spring return torque at 0° swivel angle
325.1 Nm
Product weight
30395 g
Cover material
Die-cast aluminum, coated
Housing material
Wrought aluminum alloy, anodized
Nominal operating pressure
6 bar
PFH
1.01E-7
Standard connection for valve
ISO 5211
Design
Gear rack/pinion
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
Operating medium
Compressed air as per ISO 8573-1:2010 [7:4:4]
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.
Shaft connection
T27
Material of spring
Spring steel
Material of screws
High-alloy stainless steel
Size of valve actuator
900
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
Mode of operation
Single-acting
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
ATEX category gas
II 2G
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)
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
Torque at nominal operating pressure and 90° swivel angle
323.6 Nm
PFD
7.8E-4
Note on materials
RoHS-compliant
Material of piston
Die-cast aluminum
Cam material
Steel

Related documents 8084139 Specs