| Valve function | One-way flow control function |
| Pneumatic connection, port 1 | QS-4 |
| Pneumatic connection, port 2 | QS-4 |
| Adjustment component | Knurled screw |
| Type of mounting | With through-hole; With accessories |
| Standard nominal flow rate in flow control direction | 110 l/min |
| Standard nominal flow rate in blocked direction | 165 l/min |
| Operating pressure | 0.2 ... 10 bar |
| Ambient temperature | -10 ... 60 °C |
| Material housing | Reinforced PA |
| Explosion protection | The information in the certificate must be observed!; Zone 1 (ATEX); Zone 2 (ATEX); Zone 21 (ATEX); Zone 22 (ATEX) |
| Mounting position | Any |
| Symbol | 00991453 |
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] |
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) |
| LABS (PWIS) conformity | VDMA24364-B1/B2-L |
| Media temperature | -10 ... 60 °C |
| Product weight | 12 g |
| Material seals | NBR |
| Material release ring | POM |
| Material knurled head | Reinforced PA |
| Material adjusting screw | High-alloy steel |
| EAN / GTIN | 4052568044169 |
| Festo type code | GR-QS-4 |
| Festo order number | 193967 |
| Product type | Pneumatic flow valves |
| Product group | Pneumatics |
| Outer hose diameter | 4 mm |
| Carbon footprint (EPD) | 0.3414 kg CO2e per pcs |
| Country of origin | India |
| Customs tariff code (EU CN) | 84812090 |
| HS code | 8481.20 |
| Manufacturer part number | 193967 |
