The main difference between the oxygen control valve and the ordinary control valve is: one more production process requires oil-free treatment. Generally, carbon tetrachloride cleaning can achieve the purpose of degreasing and oil-free. The flow control valve for oxygen adopts a top-oriented structure and is equipped with a multi-spring actuator. The oxygen flow control valve has the advantages during the use of flow control valve such as compact structure, lightweight, sensitive action, S streamline flow channel, small pressure drop loss, large valve capacity, accurate flow characteristics, and convenient disassembly and assembly.
| DN (mm) | 20 | 25 | 32 | 40 | 50 | |||||||||||
| Seat diameter dn(mm) | 10 | 12 | 15 | 20 | 10 | 12 | 15 | 20 | 25 | 32 | 32 | 40 | 32 | 40 | 50 | |
| CV | Line | 1.8 | 2.8 | 4.4 | 6.9 | 1.8 | 2.8 | 4.4 | 6.9 | 11 | 18 | 18 | 28 | 18 | 28 | 44 |
| KV | Equal percentage | 1.6 | 2.5 | 4 | 6.3 | 1.6 | 2.5 | 4 | 6.3 | 10 | 16 | 16 | 25 | 16 | 25 | 40 |
| Stroke L | 16 | 25 | ||||||||||||||
| Effective area of diaphragm Ae(cm2) | 280 | 400 | ||||||||||||||
| DN(mm) | 65 | 80 | 100 | 125 | 150 | 200 | 250 | |||||||||
| Seat diameter dn(mm) | 65 | 65 | 80 | 65 | 80 | 100 | 125 | 125 | 150 | 150 | 200 | 250 | ||||
| KV | Line | 69 | 69 | 110 | 69 | 110 | 176 | 275 | 275 | 440 | 440 | 690 | 1100 | |||
| Equal percentage | 63 | 63 | 100 | 63 | 100 | 160 | 250 | 250 | 400 | 400 | 630 | 900 | ||||
| Stroke L | 40 | 60 | 100 | |||||||||||||
| Effective area of diaphragm Ae(cm2) | 600 | 100 | 1600 | |||||||||||||
| PN | MPa | 1.6, 2.5, 4.0, 6.4(6.3)/2.0, 5.0, 11.0 | ||||||||||||||
| Bar | 16, 25, 40, 64(63)/20, 50, 110 | |||||||||||||||
| Lb | ANSI：Class150, Class300, Class600 | |||||||||||||||
| Flow characteristics | Straight line, equal percentage | |||||||||||||||
| Adjustable ratio(R) | 30, 50 | |||||||||||||||
| Spring (signal) range Pr(KPa) | 20～100, 40～200, 80～240, (20～60, 60～100) | |||||||||||||||
| Air pressure Ps(MPa) | 0.14/0.25/0.3 | |||||||||||||||
| Allowable leakage | metal plug：Ⅳ(10-4×Kv) soft plug：Ⅵ | |||||||||||||||
| Operating temperature (℃) | Normal temperature type | -20～200, -40～250, -60～250 | ||||||||||||||
| Cooling type | S | -40～350, -60～350 | ||||||||||||||
| High temperature type | G | 350～550(Select high temperature materials) | ||||||||||||||
| Low temperature type | D | D0：-60～-100, D1：-100～-200, D2：-200～-250 | ||||||||||||||
| Adjust cut type | Q | -40～150 (plug reinforced PTFE) (used in special cases) | ||||||||||||||
