| Valve function | 4/2-way, single solenoid | ||
| Standard nominal flow rate | 128 l/min | ||
| Operating pressure | 3,5 bar ... 8 bar | ||
| Type of reset | Mechanical spring | ||
| Exhaust-air function | With flow control option | ||
| Mounting position | optional | ||
| Pilot air supply | Internal | ||
| Symbol | 991.139 | ||
| Note on forced dynamization | Switching frequency min. 1/year | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [-:-:-] | ||
| Corrosion resistance class CRC | 2 - Moderate corrosion stress | ||
| Ambient temperature | -10 °C ... 60 °C | ||
| Product weight | 230 g | ||
| Pneumatic connection, port 1 | G1/8 | ||
| Pneumatic connection, port 3 | G1/8 | ||
| Note on materials | RoHS-compliant | ||
| Material housing | Aluminium Anodised |
| Type of actuation | Mechanical | ||
| pneumatic working port | G1/8 | ||
| Design | Poppet seat | ||
| Nominal size | 3,5 mm | ||
| Sealing principle | Soft | ||
| Type of piloting | Pilot actuated | ||
| Flow direction | Non-reversible | ||
| Pilot medium | Compressed air to ISO 8573-1:2010 [-:-:-] | ||
| Explosion protection | Zone 1 (ATEX) Zone 2 (ATEX) Zone 21 (ATEX) Zone 22 (ATEX) | ||
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) | ||
| Media temperature | -10 °C ... 60 °C | ||
| Actuating force | 1,77 N | ||
| Type of mounting | With through-hole | ||
| Pneumatic connection, port 2 | G1/8 | ||
| Pneumatic connection, port 4 | G1/8 | ||
| Material seals | NBR |
