Streamline™ Guided Flow Ridge Ventilators
The Robertson Streamline™ guided flow ventilator
provides a highly efficient system of natural
ventilation for use on industrial warehouses,
workshops, materials handling facilities, etc. To
obtain maximum effect from this ventilator, the
exhaust opening should be located horizontally
at the highest point of the building.
Design Features
Coefficient of Discharge: 0.36
Throat Size: 150mm to 500mm
• Coefficient of discharge minimum of 0.36
(determined by independent tests).
• Unobtrusive: Designed to meet modern design
requirements of low silhouette and to provide
minimum resistance to wind forces.
• Weathertight: Tested and proven in extreme
conditions to exclude wind and driving rain
and may be fitted with additional monsoon
rain baffles to give added protection under
monsoon rainfall conditions.
• Ease of installation: Rapidly installed into all
forms of roofing with no additional framework
required and no complex flashing.
• Materials: Can be supplied in a wide range of
cladding materials.
Dimensions & Mass
| Dimensions (mm) |
Approximate Mass (kg) |
| Per Linear Metre |
Pair of Ends |
| A |
B |
C |
Zincalume |
Zincalume |
| 150 |
328 |
432 |
32 |
3 |
| 250 |
410 |
562 |
38 |
5 |
| 300 |
496 |
710 |
44 |
6 |
| 500 |
781 |
1290 |
87 |
14 |
NOTE:
Maximum continuous damper operating length via single
operator on all above sizes = 6.0mm
Exhaust Capacity Table
(cubic metres per second per metre run)
| Temp. Diff. x Eff. Ht (ΔT ºC x metres) |
| |
CLEAR OPENING (mm) |
| 150 |
250 |
300 |
500 |
600 |
| 30 |
0.243 |
0.404 |
0.485 |
0.809 |
0.971 |
| 40 |
0.249 |
0.416 |
0.499 |
0.831 |
0.998 |
| 50 |
0.255 |
0.426 |
0.511 |
0.852 |
1.022 |
| 60 |
0.261 |
0.435 |
0.522 |
0.870 |
1.044 |
| 70 |
0.266 |
0.443 |
0.532 |
0.886 |
1.063 |
| 80 |
0.271 |
0.451 |
0.541 |
0.902 |
1.082 |
| 90 |
0.275 |
0.458 |
0.550 |
0.916 |
1.100 |
| 100 |
0.279 |
0.465 |
0.558 |
0.930 |
1.116 |
| 110 |
0.283 |
0.472 |
0.566 |
0.943 |
1.132 |
| 120 |
0.287 |
0.478 |
0.573 |
0.956 |
1.147 |
| 130 |
0.290 |
0.484 |
0.581 |
0.968 |
1.161 |
| 140 |
0.294 |
0.490 |
0.587 |
0.979 |
1.175 |
| 150 |
0.297 |
0.495 |
0.594 |
0.990 |
1.188 |
| 160 |
0.300 |
0.501 |
0.601 |
1.001 |
1.201 |
| 180 |
0.306 |
0.511 |
0.613 |
1.022 |
1.226 |
| 200 |
0.312 |
0.521 |
0.625 |
1.041 |
1.249 |
| 250 |
0.326 |
0.543 |
0.651 |
1.086 |
1.303 |
| 300 |
0.338 |
0.563 |
0.676 |
1.126 |
1.351 |
| 350 |
0.349 |
0.582 |
0.698 |
1.163 |
1.396 |
| 400 |
0.359 |
0.599 |
0.719 |
1.198 |
1.438 |
| 450 |
0.369 |
0.615 |
0.738 |
1.231 |
1.477 |
| 500 |
0.378 |
0.631 |
0.757 |
1.261 |
1.514 |
| 550 |
0.387 |
0.645 |
0.774 |
1.291 |
1.549 |
| 600 |
0.396 |
0.659 |
0.791 |
1.319 |
1.582 |
| 650 |
0.404 |
0.673 |
0.807 |
1.345 |
1.614 |
NOTE:
The above exhaust capacities are based on wind speed of 8 km/h.
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