| Valve function | Supply air one-way flow control function | ||
| Pneumatic connection, port 2 | Push-in sleeve QS-6 | ||
| Adjustment component | Slotted head screw | ||
| Standard nominal flow rate in flow control direction | 0 l/min ... 270 l/min | ||
| Operating pressure | 0,2 bar ... 10 bar | ||
| Mounting position | optional | ||
| Standard flow rate in flow control direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 0 l/min ... 430 l/min | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Storage temperature | -10 °C ... 40 °C | ||
| Product weight | 21,6 g | ||
| Note on materials | RoHS-compliant | ||
| Material hollow bolt | Wrought aluminium alloy Anodised Black | ||
| Material adjusting screw | High-alloy stainless steel |
| Pneumatic connection, port 1 | QS-6 | ||
| Type of actuation | Manual | ||
| Type of mounting | Plug-in Via push-in sleeve | ||
| Standard nominal flow rate in blocked direction | 170 l/min ... 260 l/min | ||
| Ambient temperature | -10 °C ... 60 °C | ||
| Symbol | 991.453 | ||
| Standard flow rate in non-return direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 330 l/min ... 400 l/min | ||
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) | ||
| Media temperature | -10 °C ... 60 °C | ||
| Notes on pneumatic connection 2 | Suitable for Festo QS connections only | ||
| Material seals | NBR | ||
| Material release ring | POM | ||
| Material swivel fitting | Die-cast zinc |
