| Valve function | Exhaust air one-way flow control function | ||
| Pneumatic connection, port 2 | G1/4 | ||
| Type of mounting | Screw-in | ||
| Standard nominal flow rate in blocked direction | 325 l/min ... 500 l/min | ||
| Maritime classification | See certificate | ||
| Symbol | 991.452 | ||
| Standard flow rate in flow control direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 720 l/min | ||
| Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | ||
| Media temperature | -10 °C ... 60 °C | ||
| Tolerance for nominal tightening torque | ± 10% | ||
| Material screw-in stud | Wrought aluminium alloy | ||
| Material seals | NBR | ||
| Material adjusting screw | Brass |
| Pneumatic connection, port 1 | QS-8 | ||
| Adjustment component | Slotted head screw | ||
| Standard nominal flow rate in flow control direction | 475 l/min | ||
| Ambient temperature | -10 °C ... 60 °C | ||
| Mounting position | optional | ||
| Operating pressure complete temperature range | 0,2 bar ... 10 bar | ||
| Standard flow rate in non-return direction 0.6->0 MPa (6->0 bar, 87->0 psi) | 610 l/min ... 760 l/min | ||
| Note on operating and pilot medium | Lubricated operation possible (in which case lubricated operation will always be required) | ||
| Nominal torque | 5 Nm | ||
| Product weight | 42 g | ||
| Note on materials | RoHS-compliant | ||
| Material release ring | POM | ||
| Material swivel fitting | Die-cast zinc Chromated |
