| Valve function | Exhaust air flow control return function | 
                                
                                    | Pneumatic connection 1 | QS-4 | 
                                
                                    | Pneumatic connection 2 | M5 | 
                                
                                    | Setting element | slotted screw | 
                                
                                    | Fastening type | Screwable | 
                                
                                    | Normal nominal flow in one-way flow control [l/min] | 40 | 
                                
                                    | Normal nominal flow in check valve direction [l/min] | 50 to 75 | 
                                
                                    | Operating  pressure [bar] | 0.2 to 10 | 
                                
                                    | ambient temperature [°C] | -10 to 60 | 
                                
                                    | installation position | arbitrary | 
                                
                                    | Normal flow In one-way flow control 6 -> 0 bar [l/min] | 80 | 
                                
                                    | Normal flow In check valve direction 6 -> 0 bar [l/min] | 100 to 150 | 
                                
                                    | Operating medium | Compressed air to ISO 8573-1:2010 [7:4:4] | 
                                
                                    | Information about operating and control medium | Oiled operation possible (required in further operations) | 
                                
                                    | Medium temperature [°C] | -10 to 60 | 
                                
                                    | Max. tightening torque [Nm] | 1,5 | 
                                
                                    | Product weight [g] | 9,0 | 
                                
                                    | Stud material | brass | 
                                
                                    | Material information | RoHs compliant | 
                                
                                    | Seals material | NBR | 
                                
                                    | Regulation screw material | Brass | 
                                
                                    | Swivel connection material | Zinc pressure cast | 
                                
                                    | Permission | Germanischer Lloyd | 
                                
                                    | Sleeve material | POM | 
                                
                                    | Weight | 9,0 g / Pcs | 
                                
                                    | GTIN | 4052568037741 | 
                                
                                    | Customs duty number | 84812090 | 
                                
                                    | RoHS compliant | Yes | 
                                
                                    | Manufacturer | Festo | 
                                
                                    | Document | Group data sheet: One-way flow control valves (english) , Data sheet |