8084135 Festo Quarter Turn Actuators

Product Details

• Nominal operating pressure
  6 bar
• Maritime classification
  See certificate
• Swivel angle
  90 deg
• Design
  Gear rack/pinion
• Symbol
  00991266
• ATEX category for dust
  II 2D
• Operating medium
  Compressed air as per ISO 8573-1:2010 [7:4:4]
• Torque at nominal operating pressure and 0° swivel angle
  593.5 Nm
• Spring return torque at 0° swivel angle
  325.1 Nm
• Pneumatic connection
  G1/4
• Material of sub-base
  Wrought aluminum alloy, anodized
• Material of piston
  Die-cast aluminum
• Size of valve actuator
  900
• MTTFd
  1126 years
• End-position adjusting range at 0°
  -5 deg ... 5 deg
• Mounting position
  Any
• Closing direction
  Clockwise closing
• Valve connection conforms to standard
  VDI/VDE 3845 (NAMUR)
• Type of ignition protection for gas
  Ex h IIC T4 Gb X
• 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)
Storage temperature
-20 °C ... 60 °C
Torque at nominal operating pressure and 90° swivel angle
323.6 Nm
Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
31.5 l
Product weight
30395 g
Housing material
Wrought aluminum alloy, anodized
Material of spring
Spring steel
Material of screws
High-alloy stainless steel
Operating pressure
2 bar ... 8 bar
PFH
1.01E-7
End-position adjusting range at nominal swivel angle
-5 deg ... 5 deg
Depth shaft connection
29 mm
Safety integrity level (SIL)
Up to SIL 2 low demand mode up to SIL 1 high demand mode
ATEX category gas
II 2G
Type of (ignition) protection for dust
Ex h IIIC T105°C Db X
Explosion prevention and protection
Zone 1 (ATEX) Zone 22 (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.
PFD
7.8E-4
Devices type according to VDMA 66413
Safety device
Flange hole pattern
F1012
Mode of operation
Single-acting
Connection for valve positioner and position sensor conforms to standard
VDI/VDE 3845 size AA 3
Ambient temperature
-20 °C ... 80 °C
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
Spring return torque with 90° swivel angle
595 Nm
Note on materials
RoHS-compliant
Seals material
NBR
Material of bearing
POM
Shaft material
Steel, nickel-plated
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.
Standard connection for valve
ISO 5211
Type code
DFPD
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
CE marking (see declaration of conformity)
as per EU explosion protection directive (ATEX)
Shaft connection
T27
Cover material
Die-cast aluminum, coated
Cam material
Steel

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