Iowa Department of Transportation
Office of Maintenance
 



 

 

   

Recommended Changes for Future Standard Prewet Systems

  • Capable of prewetting dry materials at the rate of 8-20 gallons per ton.
  • Tank 100-150 gallon tailgate mounted. Bottom fill with 2 inch ball valve and camlock nipple. Six-inch vented lid with tether.
  • Dark orange color with external liquid level site gauge
  • Check valve in-line
  • Liquids sprayed on spinner or auger with preference to the spinner to avoid problems with freezing of materials.
  • 2- fan spray nozzles with sufficient hole openings to prevent clogging
  • Tank and plumbing designed for quick installation and removal
  • Tanks mounted on tailgates such that no portions of the assembly become a hazard to people working around truck. Caution should be taken to protect employees from possible head injuries since prewet tanks typically hang at approximately head level and protrude from the back of the truck
  • Stainless steel framework with retracting legs. All plumbing below tank within frame and extended legs to protect plumbing from being damaged. Lift hooks should be strong and have the ability to keep the tank assembly level when mounting or removing the tank system

Maintained by Sheri R. Anderson
Last Updated: 06/29/06

 
 
 
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