| Exhaust-air function | With flow control option | ||
| Material seals | HNBR NBR TPE-U(PU) | ||
| Material piston slide | POM | ||
| Valve function | 3/2-way, closed, monostable | ||
| Valve size | 31 mm | ||
| pneumatic working port | G3/8 | ||
| Design | Poppet seat | ||
| Approval | c UL us - Recognized (OL) | ||
| Sealing principle | Soft | ||
| Manual override | None | ||
| Pilot air supply | Internal | ||
| Symbol | 991.173 | ||
| Pilot pressure | 2,5 bar ... 10 bar | ||
| Switching time on | 11 ms | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Corrosion resistance class CRC | 2 - Moderate corrosion stress | ||
| Pilot medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Product weight | 345 g | ||
| Breather connection | Not ducted | ||
| Pneumatic connection, port 1 | G3/8 | ||
| Pneumatic connection, port 3 | G3/8 |
| Note on materials | RoHS-compliant | ||
| Material housing | Painted die cast aluminium | ||
| Material screws | Nickel-plated steel | ||
| Type of actuation | Pneumatic | ||
| Standard nominal flow rate | 1.600 l/min | ||
| Operating pressure | 1 bar ... 10 bar | ||
| Type of reset | Mechanical spring | ||
| Nominal size | 7,9 mm | ||
| Mounting position | optional | ||
| Type of piloting | Direct | ||
| Flow direction | Non-reversible | ||
| lap | Underlap | ||
| Switching time off | 37 ms | ||
| Explosion protection | The information in the certificate must be observed! 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 | ||
| Ambient temperature | -10 °C ... 60 °C | ||
| Type of mounting | On manifold rail With through-hole Either: | ||
| Pilot air port 12 | 1/8 NPT | ||
| Pneumatic connection, port 2 | G3/8 |
