Festo AG & Co. KG
8047614
semi-rotary drive
DFPD-20-RP-90-RD-F04
double-acting, rack and pinion engineering design, connection pattern to NAMUR VDI/VDE 3845 for mounting solenoid valves, position sensors and positioners, standard connection to process valve fitting ISO 5211.
More detailed information about this product!
Festo Data sheet
| Criterion | Feature |
| Size of actuator | 20 |
| Flange hole pattern | F04 |
| Swivel angle | 90 deg |
| End-position adjustment range at 0° | -5 - 5 deg |
| End-position adjusting range at nominal swivel angle | -5 - 5 deg |
| Shaft connection depth | 12 mm |
| Fitting connection conforms to standard | ISO 5211 |
| Assembly position | Any |
| Mode of operation | double-acting |
| Design structure | Rack and pinion |
| Closing direction | right-closing |
| Valve connection conforms to standard | VDI/VDE 3845 (NAMUR) |
| Connection for positioner and position sensor conforms to standard | VDI/VDE 3845 size AA 1 |
| Component suitable for safety functions | Safety device |
| Safety function | Execute working stroke in defined time |
| Safety Integrity Level (SIL) | Product can be used in SRP/CS up to SIL 2 low demand Up to SIL 3 in redundant architecture up to SIL 1 high demand mode |
| Certified for safety function to ISO 13849 and IEC 61508 (SIL) | Product can be used in SRP/CS up to SIL 2 low demand up to SIL 1 high demand mode Up to SIL 3 in redundant architecture |
| Operating pressure MPa | 0,2 - 0,8 MPa |
| Operating pressure | 2 - 8 bar |
| Operating pressure | 29 - 116 psi |
| Nominal operating pressure | 0,55 MPa |
| Nominal operating pressure | 5,5 bar |
| Nominal operating pressure (psi) | 79,75 psi |
| Maritime classification | see certificate |
| CE mark (see declaration of conformity) | to EU directive explosion protection (ATEX) |
| UKCA marking (see declaration of conformity) | To UK EX instructions |
| Certificate issuing department | DNVGL TAP00001CE TÜV Rheinland 968/V 1106.00/19 |
| ATEX category Gas | II 2G |
| ATEX category Dust | II 2D |
| Explosion ignition protection type Gas | Ex h IIC T4 Gb X |
| Explosion ignition protection type Dust | Ex h IIIC T105°C Db X |
| Explosion-proof ambient temperature | -20°C <= Ta <= +80°C |
| Operating medium | Compressed air in accordance with ISO8573-1:2010 [7:4:4] |
| Note on operating and pilot medium | Pressure dew point 10°C below ambient temperature/temperature of medium Lubricated operation possible (subsequently required for further operation) |
| Corrosion resistance classification CRC | 2 - Moderate corrosion stress |
| Storage temperature | -20 - 60 °C |
| Ambient temperature | -20 - 80 °C |
| Torque at rated operating pressure and 0° rotation angle | 20,1 Nm |
| Torque at nominal operating pressure with 90° swivel angle | 20,1 Nm |
| Note about the torque | The operating torque of the actuator must not be higher than the maximum permissible torque listed in ISO 5211, with reference to the size of the mounting flange and of the coupling. |
| Mean Time to Dangerous Failure (MTTFd) | 1126 years |
| Probability of Failure per Hour in [1/h]. | 1,01000000E-07 |
| PFD (Probability of Failure on Demand) | 1,42000000E-03 |
| Air consumption at 0.6 MPa (6 bar, 87 psi) per cycle 0°-nominal swivel angle-0° | 1,8 l |
| Product weight | 1275 g |
| Shaft connection | T11 |
| Pneumatic connection | G1/8 |
| Materials note | Conforms to RoHS |
| Material of connecting plate | Anodised wrought aluminium alloy |
| Material cover | Die-cast aluminium, coated |
| Material seals | NBR |
| Material housing | Anodised wrought aluminium alloy |
| Material piston | Aluminium die cast |
| Material bearing | POM |
| Material cam | Stainless steel casting |
| Material screws | High alloy steel, non-corrosive |
| Material shaft | Steel, nickel-plated |
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