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Annular Airtubes are inherently corrosion resistant and require no additional coatings or protective treatments. Manufactured to perform in the harshest of environments where real-world conditions can severely affect performance and reliability. Ideal for marine and other harsh environment applications.The air tube design to ensure excellent product performance without the need for expensive and complicated control packages. Controllability is as easy as a simple pressure control valve and regulator.
| Size |
Outer diameter（D） |
Inner diameter(d) |
Thickness(H) | Nozzle | |||||
Model | PCD | Quantity | Internal Thread | Outer diameter /Milling size | Exposed height | Direction | |||
| 6″ | 184 | 56 | 19 | 121 | 2 | 1/4″NPT | φ30/27 | 11 | Lateral |
| 8″ | 229 | 108 | 19 | 168 | 1or2 | 1/2″NPT | φ30/27 | 14 | Radial |
| 10″ | 250 | 120 | 26 | 185 | 1 | ZG1/2″ | φ30/27 | 14 | Radial |
| 11″ | 289 | 143 | 19 | 216 | 1or2 | 1/2″NPT | φ30/27 | 14 | Radial |
| 14″ | 356 | 191 | 25 | 273 | 1or2 | 1/2″NPT | φ30/27 | 20 | Radial |
| 16″ | 400 | 230 | 25 | 318 | 2 | 1/2″NPT | φ30/27 | 20 | Radial |
| 17″ | 436 | 217 | 23 | 328 | 2 | ZG1/2″ | φ30/27 | 20 | Radial |
| 18″ | 470 | 267 | 25 | 360 | 1or3 | 1/2″NPT | φ30/27 | 20 | Radial |
| 18″ | 470 | 267 | 23 | 360 | 1or2 | ZG1/2″ | φ30/27 | 20 | Radial |
19″ |
521 |
251 |
25 |
403 |
4 |
1/2″NPT | φ30/27 |
44 |
Radial |
| 1-3/16-12UN | |||||||||
| 20″ | 508 | 308 | 25 | 405 | 3 | ZG1/2″ | φ30/27 | 20 | Radial |
| 21″ | 521 | 305 | 25 | 406 | 1or2or3 | 1/2″NPT | φ30/27 | 20 | Radial |
| 21″ | 540 | 260 | 40 | 400 | 3 | ZG1/2″ | M30×1.5 | 25 | Radial |
22″ |
543 |
245 |
25 |
406 |
4 |
1″NPT | φ44/38 |
38 |
Radial |
| 1-3/4-12UN | |||||||||
| 24″ | 660 | 413 | 28 | 533 | 1or3 | 1/2″NPT | φ30/27 | 20 | Radial |
| 24″ | 650 | 406 | 28 | 530 | 3 | ZG1/2″ | φ30/27 | 34 | Radial |
26″ |
660 |
315 |
25 |
483 |
4 |
1″NPT | φ44/38 |
38 |
Radial |
| 1-3/4-12UN | |||||||||
| 29″ | 746 | 457 | 29 | 629 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 30″ | 800 | 457 | 29 | 629 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 30″ | 790 | 445 | 23 | 615 | 4 | ZG1/2″ | φ30/27 | 20 | Radial |
| 36″ | 943 | 537 | 28 | 775 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 36″ | 943 | 597 | 28 | 775 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 36″ | 943 | 597 | 28 | 775 | 2 | 1/2″NPT | φ30/27 | 11 | Lateral |
| 36″ | 930 | 465 | 28 | 708 | 3 | ZG1/2″ | φ30/27 | 20 | Lateral |
| 38″ | 950 | 475 | 30 | 716 | 4 | ZG1/2″ | φ30/27 | 34 | Lateral |
| 42″ | 1095 | 752 | 28 | 889 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 42″ | 1095 | 752 | 28 | 889 | 4 | 1″NPT | φ57/48 | 38 | Lateral |
| 48″ | 1283 | 794 | 29 | 1016 | 4 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 48″ | 1283 | 794 | 29 | 1016 | 4 | 1.5″NPT | φ86/71 | 57 | Lateral |
| 52″ | 1320 | 760 | 40 | 1040 | 3 | ZG1″ | M45×1.5/42 | 65 | Radial |
| 60″ | 1522 | 840 | 29 | 1181 | 6 | 1/2″NPT | φ30/27 | 20 | Lateral |
| 60″ | 1522 | 840 | 29 | 1181 | 6 | 1″NPT | φ57/48 | 38 | Lateral |
