| No. | 
                        Type | 
                        Porduct | 
                        Medium | 
                        Working pressure  | 
                        公称通径 | 
                        Outlet Thread | 
                        Inlet Thread | 
                        Safety Temperature | 
                     
                    
                        |   | 
                          | 
                          | 
                          | 
                          | 
                          | 
                          | 
                          | 
                         pressure | 
                     
                    
                        |   | 
                          | 
                          | 
                          | 
                        wp/(Mpa) | 
                        DN (mm) | 
                          | 
                          | 
                        Mpa | 
                     
                    
                        | 1 | 
                        QF-2 | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        G5/8 | 
                        GB8335 PZ27.8 | 
                        21±1.5 | 
                     
                    
                        | 2 | 
                        QF-2B | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        G5/8 | 
                        GB8335 PZ27.8 | 
                        21±1.5 | 
                     
                    
                        | 3 | 
                        QF-2B3 | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        G5/8 | 
                        3/4-14-NGT | 
                        21±1.5 | 
                     
                    
                        | 4 | 
                        QF-2C | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        G5/8 | 
                        GB8335 PZ27.8 | 
                        NO | 
                     
                    
                        | 14 | 
                        QF-2D | 
                        Neddle  Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        (FEMALE)G5/8 | 
                        GB8335 PZ27.8 | 
                        NO | 
                     
                    
                        | 19 | 
                        QF-2G | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        (FEMALE)G5/8 | 
                          | 
                        21±1.5 | 
                     
                    
                        | 6 | 
                        QF-6 | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        (FEMALE)G5/8 | 
                        GB8335 PZ27.8 | 
                        21±1.5 | 
                     
                    
                        | 14 | 
                        QF-8 | 
                        Coupling Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        G1/2 | 
                        GB8335 PZ27.8 | 
                        NO | 
                     
                    
                        | 15 | 
                        QF-8A | 
                        Coupling Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        W21.8×1/14 | 
                        GB8335 PZ27.8 | 
                        NO | 
                     
                    
                        | 16 | 
                        QF-8B | 
                        Coupling Type Valve | 
                        O2, Air,N2 | 
                        30 | 
                        3 | 
                        W22×1/14 | 
                          | 
                        NO | 
                     
                    
                        | 17 | 
                        QF-11 | 
                        Diaphragm Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        2 | 
                        W21.8×1/14 | 
                        GB8335 PZ19.2 | 
                        NO | 
                     
                    
                        | 18 | 
                        QF-011 | 
                        Diaphragm Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        2 | 
                        W21.8×1/14 | 
                          | 
                        21±1.5 | 
                     
                    
                        | 3 | 
                        CGA540 | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        CGA540 | 
                        3/4-14-NGT | 
                        21±1.5 | 
                     
                    
                        | 6 | 
                        CGA540C | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        CGA540 | 
                        1-11½-NGT | 
                        21±1.5 | 
                     
                    
                        | 7 | 
                        CGA5401/2 | 
                        Flapper Type Valve | 
                        O2, Air,N2 | 
                        15 | 
                        4 | 
                        CGA540 | 
                        3/4-14-NGT | 
                        21±1.5 | 
                     
                
             
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