Ultra-Flow® Ridge Ventilators

The Ultra-Flow® continuous gravity ventilato is the most aerodynamically efficient in the HH Robertson range of exhaust ventilators.

The Ultra-Flow® ventilator provides an energy efficient and cost effective means of air exhaust for severe heat and fume problems. It is ideally suited to applications in aluminium smelters, steel mills, boiler houses, glass plants and general industrial manufacturing facilities.

Design Features

Coefficient of Discharge: 0.65
Throat Size: 750mm to 3000mm

• Coefficient of discharge minimum of 0.65 (determined by independent tests).
• Unobtrusive: Designed to meet modern design requirements of low silhouette and to provide minimum resistance to wind forces.
• Guiding vanes: Facilitate redirection of exhausted air to provide for a more uniform velocity distribution at top of ventilator opening, allowing for a greater capacity discharge for a given size.
• Diaphragms: Wind jump diaphragms ensure efficient exhaust even when wind direction parallels the ventilator opening.
• Welded frames: Reduced erection costs and lower supporting steel costs, in addition to providing greater overall strength.
• Materials: Can be supplied in a wide range of cladding materials.
• Acoustics: Can be acoustically treated to suit specific project requirements.

Dimensions & Mass

NOTE: Mass per metre run for ventilators with standard 3000mm frame spacing.

Exhaust Capacity Table

(cubic metres per second per metre run)

NOTES:
a) The above exhaust capacity table is based on zero wind velocity. Wind velocity will increase the vent’s exhaust capacity.
b) This table is based on a ratio of free area of inlet openings to exhaust openings of 1.5:1.0