Hi-Gard™ Gravity Actuated Rotary Distributors (Hi-GARD)

Gravity Actuated Rotary Distributor for distribution of wastewater over trickling filter or biotower media. The unit provides a cost effective means of distribution with a low maintenance piece of equipment. Aluminum construction provides corrosion resistance which results in longevity without the need for repainting. Large non-clogging distribution orifices also reduce maintenance associated with spray type nozzles.

Hi-GARD™ distributors deliver:

Uniform distribution of wastewater over filter media

Cost effective treatment without electric input

Relatively constant speed over a wide flow range

Low maintenance

Corrosion resistant aluminum construction

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Features and Benefits

Features:

No mechanical seal
Aluminum construction
Gravity actuated
2 or 4 arm construction
Mast mounted bearing
Able to maintain speed over a variety of flow ranges (3-1 range)
Large non-clogging distribution orifices

Benefits:

Low maintenance
Eliminates replacement
Corrosion resistance
No power requirements
Wider flushing intensity range
Reduced cost
Eliminates potential of flooding bearing
Provides the ability to flush the media by increasing flow rate
Reduced maintenance.

Wastewater flows into the Hi-GARD™ unit through a central located inlet pipe and over a stationary weir into a rotating tub assembly. The depth of water in the rotating tub will force the water out into the distribution arms. Large non-clogging orifices on the top side of the arms distribute the wastewater proportionally along the length of the arm. Wastewater flowing down the inclined side of the distributor arms provides the driving force for rotation. Over 675 units have been supplied since 1955. Installations range from 18 feet (5.5 m) to 200 feet (61.0 m) diameter, with flow ranges from 50 gpm (11 m³/hr) to 35,000 gpm (7950 m³/hr).

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