QF series valves
| TYPE | MEDIUM AVAILABLE | WP(Mpa) | INLET THREAD | OUTLET THREAD | SAFETY DEVICE(Mpa) | DN(mm) | STRUCTURAL STYLE |
| QF-2 | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2B | O2,N2 | 15 | GB8335 PZ27.8 | G5/8-LH | 21±1.5 | 4 | Valve type |
| QF-2B1 | O2,N2 | 15 | G1/2 | W22×1/14 | 21±1.5 | 4 | Valve type |
| QF-2C | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2D | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 21±1.5 | 4 | Valve type |
| QF-2E | O2,N2 | 15 | JIS B 8246 V1 ψ20 | W22×1/14 | 4 | Valve type | |
| QF-2F | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-2G | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Shaft type |
| QF-2M | O2,N2 | 15 | GB8335 PZ27.8 | G1/2 | 21±1.5 | 4 | Valve type |
| QF-2P | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-4 | O2,N2 | 15 | GB8335 PZ27.8 | G3/4 | 21±1.5 | 4 | Valve type |
| QF-5 | O2,N2 | 20 | GB8335 PZ27.8 | G5/8 | 28±2 | 4 | Valve type |
| QF-6 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 4 | Valve type | |
| QF-7 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread G5/8 | 4 | Needle form | |
| QF-8 | O2,N2 | 15 | GB8335 PZ27.8 | G1/2 | 4 | Shaft type | |
| QF-12 | O2,N2 | 15 | GB8335 PZ19.2 | G5/8 | 21±1.5 | 4 | Valve type |
| QF-20 | O2,N2 | 15 | GB8335 PZ19.2 | G1/2 | 21±1.5 | 2 | Diaphragm type |
| QF-21 | O2,N2 | 15 | GB8335 PZ19.2 | W21.8×1/14 | 21±1.5 | 2 | Diaphragm type |
| QF-22 | O2,N2 | 15 | GB8335 PZ27.8 | W21.8×1/14 | 21±1.5 | 4 | Valve type |
| QF-25 | O2 | 15 | GB8335 PZ19.2 | ψ7 Hose | 2 | Needle form | |
| QF-27 | O2,N2 | 15 | JIS B 8246 V1 | W22×1/14 | 21±1.5 | 3 | Valve type |
| F-1 | O2,N2 | 15 | GB8335 PZ27.8 | Internal thread W23×1/14 | 21±1.5 | 4 | Valve type |
| F-2 | O2,N2 | 15 | JIS B 8246 V2 | Internal thread W23×1/14 | 21±1.5 | 4 | Valve type |
| F-3 | O2,N2 | 15 | BS341 1×1/14 | Internal thread G5/8 | 21±1.5 | 4 | Shaft type |
| DF-4 | O2,N2 | 15 | GB8335 PZ27.8 | G5/8 | 21±1.5 | 4 | Shaft type |
