Introduction
Coefficient of Discharge: (open) 0.84, (closed) 0.344
The Robertson QDP is designed as a dual purpose unit which, under normal conditions, functions as an efficient Slope Mounted Natural Ventilator. Should fire conditions occur, the unit will automatically open to provide an almost unrestricted exhaust area.
Features and Benefits:
Coefficient of Discharge - As determined by independent tests, is 0.344 with the lids closed, and 0.84 with the lids open.
Maintenance Testing - Regular maintenance testing of all automatic smoke/heat release ventilators is a standard building code requirement. QDP Ventilators incorporate the necessary facilities to enable this testing.
Remote Control Systems - Can be provided with electrical or pneumatic remote control systems with zone control.
Materials - Can be supplied in a wide range of cladding materials including Versacor coated sheeting.
*QDP vents are designed to meet international building code standards.
Dimensions & Mass:
| Unit | Exhaust Opening (m2) | Dimensions (mm) | Mass | ||||||||
| A | B | C | D | E | F | G | Versacor | Zincalume | Aluminium | ||
| 415 | 0.47 | 770 | 1326 | 365 | 520 | 150 | 1220 | 215 | 33 | 29 | 23 |
| 615 | 0.70 | 770 | 1934 | 365 | 520 | 150 | 1830 | 215 | 39 | 37 | 27 |
| 724 | 1.30 | 1295 | 2262 | 610 | 952 | 170 | 2134 | 215 | 133 | 99 | 54 |