SPRAY DEPOSITION (HELICOPTER) TVB on a Bell 206 using .045" wedge nozzles to apply brush control herbicides to a utility right-of-way, applying 20 gallons per acre at 25 mph. Fears and McMaster reported that in a 1982 field study, the TVB Boom mounted on a Bell 47G Helicopter deposited 99.5% of the ...

NOZZLES, DROPLET SIZE & SPRAY VOLUME TVB .045" wedge nozzle spray pattern The following nozzle orifice sizes are available: .070" Wedge Nozzle -- Used for application to utility rights-of-way when drops of 150 to 300 feet are required or in other situations requiring large spray droplets. The dr...

Material Safety Data Sheet: THINVERT RTU Deposition Aid Product Name: THINVERT RTU Deposition Aid Chemical Name: Not applicable: blend Chemical Family: Synthetic isoparaffinic hydrocarbon mixed with emulsifier, nonionic surfactant and water to form a thin invert emulsion. 1. INGREDIENTS: (%w/w, unle...

ALTITUDE Since the TVB produces very few fine spray particles, it is not necessary to fly it at brush-hugging heights. Optimum swath widths are obtained at altitudes of 70 to 100 feet above the ground or vegetation. Fly at a consistent level height, no need to follow the terrain. Below is a list of ...

AIRCRAFT CHOICES TVB installation on an Air Tractor TVB installation on a Bell 204 TVB installation on a Bell 206 The TVB can be installed directly on most fixed- wing spray boom hangers. Waldrum Specialties, Inc. manufactures TVB hanger systems for many helicopters. Inquiries are welcome. Secondary...