8047644 Festo Quarter Turn Actuators

Product Details

• MTTFd
  1126 years
• End-position adjusting range at 0°
  -5 deg ... 5 deg
• Type code
  DFPD
• Design
  Gear rack/pinion
• Type of ignition protection for gas
  Ex h IIC T4 Gb X
• ATEX category for dust
  II 2D
• Torque at nominal operating pressure and 0° swivel angle
  7.4 Nm
• Spring return torque at 0° swivel angle
  3.6 Nm
• Product weight
  1371 g
• Note on materials
  RoHS-compliant
• Material of piston
  Die-cast aluminum
• Cam material
  Cast stainless steel
• Devices type according to VDMA 66413
  Safety device
• End-position adjusting range at nominal swivel angle
  -5 deg ... 5 deg
• Closing direction
  Clockwise closing
• Size of valve actuator
  20
• 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
• 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.
PFD
7.8E-4
Shaft connection
T9
Material of spring
Spring steel
Shaft material
Steel, nickel-plated
PFH
1.01E-7
Depth shaft connection
10 mm
Mode of operation
Single-acting
Valve connection conforms to standard
VDI/VDE 3845 (NAMUR)
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]
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)
Nominal operating pressure
3 bar
Maritime classification
See certificate
Standard connection for valve
ISO 5211
Connection for valve positioner and position sensor conforms to standard
VDI/VDE 3845 size AA 1
Ambient temperature
-20 °C ... 80 °C
Storage temperature
-20 °C ... 60 °C
Corrosion resistance class (CRC)
2 - Moderate corrosion stress
Spring return torque with 90° swivel angle
7.1 Nm
Pneumatic connection
G1/8
Cover material
Die-cast aluminum, coated
Material of bearing
POM
Material of screws
High-alloy stainless steel
Operating pressure
2 bar ... 8 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.
Swivel angle
90 deg
Flange hole pattern
F03
Mounting position
Any
Symbol
00991266
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
Torque at nominal operating pressure and 90° swivel angle
3.8 Nm
Air consumption at 6 bar per cycle 0°-nominal swivel angle-0°
0.8 l
Material of sub-base
Wrought aluminum alloy, anodized
Seals material
NBR
Housing material
Wrought aluminum alloy, anodized

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