Overhead Spray Systems
Overhead Spray Systems (OSS)
GVM’s Overhead Spray Systems (OSS) are multifunction liquid deicer dispensing systems designed to pre-wet truck loads of solid de-icing materials. Overhead Spray Systems allow users to pre-wet multiple truckloads with only one dispensing system. Overhead Spray Systems are also capable of loading and unloading truck-mounted pre-wet tanks, returning the de-icing liquids to bulk storage tanks, and draining tanks for end-of-season maintenance.
System Include
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Adjustable height spray bar
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Centrifugal pump, rated flow up to 110 GPM
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Hot dip galvanized steel to meet ASTM specification A123 on base, main body and spray arm
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Electric ball valve to prevent tank siphoning
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Dusk-to-dawn light
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Tank Plumbing to Dispensing Package
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Post-mounted control box
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Hand Crank
Options
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Available in two models:OSS-50-RC and OSS-101
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Fixed base or freestanding systems
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Storage tank sizes: 300-20,000 gal.
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Linear actuator for mechanical spray arm adjustment
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Remote control for ease of operation

Hydraulic vs. Electric Driven Pumps
PAS Series hydraulic driven systems are designed to dispense liquid pre-wet materials with a hydraulic driven pump, coupled in series to the dry material spreader auger, providing a consistent ratio of liquid to dry material. These systems operate in conjunc-tion with ground speed or manual spreader controls providing a linear chemical flow at vehicle speeds ranging from 3 to 50 miles per hour. They operate in auger reverse without back pressure on the spreader system components. All liquid handling components are resistant to the effects of standard de-icing liquids and have a record of proven reliability.
Additionally, an electric variable speed driven pump designed to apply liquid de-icers to granular material being dispensed from a tailgate mounted spreader could be utilized. The flow rate is then manually adjustable by the operator from the in-cab controls.
Electric driven systems utilize an electric variable speed driven pump designed to apply liquid de-icers to granular material being dispensed from a tailgate-mounted spreader. The flow rate is manually adjustable by the operator from the in-cab controls.
Tank Options
Norwesco, Inc. is the leading North American manufacturer of select rotationally molded polyethylene tanks. Norwesco was founded in 1939 in St. Paul, Minnesota with the name of Northwest Plastics, Inc. The name was changed around 1973, and was then was ranked as one of the oldest and largest plastic processors in the United States.
Norwesco maintains the highest levels of product quality and customer service. Their objective is to continue to provide these valued traits to the customer to maintain a position as the industry leader in the polyethylene tank market.
PLEASE NOTE: Tank availability may vary. Tank dimensions and capacities may vary slightly, and are subject to change without notice. Anti-icing systems are available with specific size tanks—call for details or quotes
Vertical Tanks
White or Blue Vertical Storage Tanks are most frequently used for our Pedestal Pre-Wet Systems. Norwesco vertical tanks feature tie-down slots, built-in graduated gallon indicators, an offset fill-opening and a self-vented, slosh-proof lid.
Drainable Leg Tanks
When complete drainage is necessary, you would want to choose these tanks. They are designed primarily for use on fertilizer and chemical nurse trailers.
All Norwesco drainable tanks require full length bottom support as well as support bands!
Horizontal Leg Tanks
Horizontal leg tanks are used primarily for anti-icing applications within the snow industry, Norwesco’s leg tanks feature molded-in legs that act as “baffles” to help to reduce sloshing.