Product features of oxygen special stop valve
This product not only has the function of common valve, but also has its own characteristics. Strict oil prohibition measures are adopted during manufacturing, and all parts are strictly degreased before installation. The flange ends of all sizes of valves are provided with conductive screw holes to prevent static electricity. The exposed parts of the valve shall be protected from dust and oil pollution. The materials used in this kind of products are divided into two categories: one is cast silicon brass used for valve body, bonnet and disc; the other is high-quality stainless steel used for valve body, bonnet and disc.
Executive standard
| Product specification | design code | Structural length | Connecting flange | Test and inspection |
| GB/T 12235 | GB/T 12221 | JB/T 79、GB/T9113、HG/T20592、EN1092-1/2、ASME B16.5/B16.47 | JB/T 9092GB/T13927、API598 |
Main performance specification of oxygen special stop valve
| Nominal diameter（DN） | 15-400 | |||
| Nominal pressure（MPa） | 1.6 | 2.5 | 4.0 | |
| Test pressure（MPa） | strength | 2.4 | 3.75 | 6.0 |
| seal up | 1.76 | 2.75 | 4.4 | |
| Applicable temperature | ≤200℃ | |||
| Applicable medium | 氧气 | |||
Material of main parts
| Part name | Material of parts |
| Body / bonnet | Stainless steel, brass |
| Stem | Stainless steel, brass |
| Valve disc | 25#sealing surface nylon |
| Stem nut | bronze |
| filler |
Forming of reinforced polytetrafluoroethylene |
| shim | XB450 |
| handwheel | Ductile iron |
Drawing of oxygen special stop valve
Main connecting dimensions of PN2.5MPa oxygen special stop valve
| DN(mm) | L | D | D1 | D2 | b | Z-Φd | D0 | H | H1 | L1 |
| JY41W-25P/PL JY41W-25T | ||||||||||
| 15 | 130 | 95 | 65 | 45 | 16 | 4-Φ14 | 100 | 190 | - | - |
| 20 | 150 | 105 | 75 | 55 | 16 | 4-Φ14 | 100 | 213 | - | - |
| 25 | 160 | 115 | 85 | 65 | 16 | 4-Φ14 | 125 | 236 | - | - |
| 32 | 180 | 135 | 100 | 78 | 18 | 4-Φ18 | 180 | 312 | - | - |
| 40 | 200 | 145 | 110 | 85 | 18 | 4-Φ18 | 160 | 328 | - | - |
| 50 | 230 | 160 | 125 | 100 | 20 | 4-Φ18 | 320 | 450 | - | - |
| 65 | 290 | 180 | 145 | 120 | 22 | 8-Φ18 | 360 | 530 | - | - |
| 80 | 310 | 195 | 160 | 135 | 22 | 8-Φ18 | 400 | 560 | - | - |
| 100 | 350 | 230 | 190 | 160 | 24 | 8-Φ23 | 450 | 618 | - | - |
| 125 | 400 | 270 | 220 | 188 | 28 | 8-Φ25 | 450 | 675 | - | - |
| 150 | 480 | 300 | 250 | 218 | 300 | 8-Φ25 | 560 | 743 | - | - |
| 200 | 600 | 360 | 310 | 278 | 34 | 12-Φ25 | 640 | 850 | - | - |
| 250 | 650 | 425 | 370 | 332 | 36 | 12-Φ30 | 720 | 975 | 340 | 380 |
| 300 | 750 | 485 | 430 | 390 | 40 | 16-Φ30 | 800 | 1115 | 340 | 415 |
| 400 | 950 | 610 | 550 | 505 | 48 | 16-Φ34 | 900 | 1380 | 340 | 465 |
Main connecting dimensions of PN4.0MPa oxygen special stop valve
| DN(mm) | L | D | D1 | D2 | b | Z-Φd | D0 | H | H1 | L1 |
| JY41W-40P/PL JY41W-40T | ||||||||||
| 15 | 130 | 95 | 65 | 45 | 40 | 4-Φ14 | 100 | 202 | - | - |
| 20 | 150 | 105 | 75 | 55 | 51 | 4-Φ14 | 100 | 225 | - | - |
| 25 | 160 | 115 | 85 | 65 | 58 | 4-Φ14 | 125 | 236 | - | - |
| 32 | 180 | 135 | 100 | 78 | 66 | 4-Φ18 | 180 | 312 | - | - |
| 40 | 200 | 145 | 110 | 85 | 76 | 4-Φ18 | 160 | 328 | - | - |
| 50 | 230 | 160 | 125 | 100 | 88 | 4-Φ18 | 320 | 450 | - | - |
| 65 | 290 | 180 | 145 | 120 | 110 | 8-Φ18 | 360 | 530 | - | - |
| 80 | 310 | 195 | 160 | 135 | 121 | 8-Φ18 | 400 | 560 | - | - |
| 100 | 350 | 230 | 190 | 160 | 150 | 8-Φ23 | 450 | 618 | - | - |
| 125 | 400 | 270 | 220 | 188 | 176 | 8-Φ25 | 450 | 675 | - | - |
| 150 | 480 | 300 | 250 | 218 | 204 | 8-Φ25 | 560 | 743 | - | - |
| 200 | 600 | 375 | 320 | 282 | 160 | 12-Φ30 | 640 | 850 | - | - |
| 250 | 650 | 445 | 385 | 345 | 313 | 12-34 | 720 | 975 | 340 | 380 |
| 300 | 750 | 510 | 450 | 408 | 364 | 16-34 | 800 | 1115 | 340 | 415 |
| 400 | 950 | 655 | 585 | 535 | 474 | 16-41 | 900 | 1425 | 340 | 465 |
