| Operating voltage | 24V DC | ||
| Standard nominal flow rate | 1.250 l/min | ||
| Type of actuation | Electric | ||
| Material screws | High-alloy stainless steel | ||
| Material seals | NBR | ||
| Pneumatic connection, port 5 | 1/4 NPT | ||
| Pneumatic connection, port 3 | 1/4 NPT | ||
| Pneumatic connection, port 1 | 1/4 NPT | ||
| Type of mounting | With through-hole | ||
| Product weight | 530 g | ||
| Media temperature | -20 °C ... 60 °C | ||
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) | ||
| Explosion protection | Zone 1 (ATEX) Zone 2 (ATEX) Zone 21 (ATEX) Zone 22 (ATEX) Zone 0 (IEC-EX) Zone 21 (IEC-EX) | ||
| Max. input current Ii | 0,115 A | ||
| Duty cycle | 100% | ||
| Switching time off | 92 ms | ||
| C value | 5,2 l/sbar | ||
| Signal status display | With accessories | ||
| Symbol | 991.831 | ||
| Pilot air supply | Internal | ||
| Manual override | Detenting Non-detenting | ||
| Mounting position | optional | ||
| Exhaust-air function | With flow control option | ||
| Explosion ambient temperature | -40°C <= Ta <= +50°C | ||
| Explosion ignition protection type for gas | Ex ia IIC T6 Ga | ||
| ATEX category gas | II 2G | ||
| Explosion protection certification outside the EU | EPL Db (IEC-EX) EPL Ga (IEC-EX) | ||
| Design | Piston gate valve |
| pneumatic working port | NAMUR port pattern | ||
| Construction width | 32 mm | ||
| Valve function | 5/2-way or 3/2-way, convertible | ||
| Material housing | Wrought aluminium alloy | ||
| Note on materials | RoHS-compliant | ||
| Pneumatic connection, port 4 | NAMUR port pattern | ||
| Pneumatic connection, port 2 | NAMUR port pattern | ||
| Breather connection | Not ducted | ||
| Electrical connection | Type A To EN 175301-803 | ||
| Ambient temperature | -20 °C ... 60 °C | ||
| Corrosion resistance class CRC | 2 - Moderate corrosion stress | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Permissible voltage fluctuations | +/- 10 % | ||
| Max. input voltage Ui | 28 V | ||
| Switching time on | 35 ms | ||
| Standard nominal flow rate, exhaust return 4->3 | 110 l/min | ||
| b value | 0,4 | ||
| lap | Positive overlap | ||
| Flow direction | Non-reversible | ||
| Type of piloting | Pilot actuated | ||
| Conforms to standard | VDI/VDE 3845 (NAMUR) | ||
| Sealing principle | Soft | ||
| Degree of protection | IP65 With plug socket To IEC 60529 | ||
| Explosion ignition protection type for dust | Ex t IIIC T80°C Db | ||
| ATEX category dust | II 2D | ||
| Certificate issuing authority | DNVGL-TAA000011J | ||
| Type of reset | Mechanical spring | ||
| Operating pressure | 2,5 bar ... 8 bar |
