D.B. Smith Field King™ Professional Backpack Sprayer

Item # 171472

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Looking for a backpack sprayer that’s comfortable, durable and high-performing? You’ve found it!

This 4-gal. piston pump, backpack sprayer is chock full of features you'll love and ideal for commercial pest control, orchard and forestry work. Sprayer features a no-leak design using Viton® seals and O-rings that keep chemicals off of you. Piston pump. 4-gallon capacity. Weighs 12.9 lb.

  • 2-In-1 Sprayer: Sprayer delivers up to 150 psi for extended reach spraying insecticides and fungicides, or the 25-psi regulator works great for spraying herbicides
  • All Day Comfort: Deluxe harness with padded chest and waist belt give you the support needed when working long hours
  • Stay Consistent: Built-in agitator keeps powders mixed
  • Extended Reach: Includes a 21"L poly spray wand with shut off valve, plus 45"L hose
  • Versatile Spray Patterns: Includes High-volume flat fan, low-volume flat fan, foaming and adjustable brass nozzles
  • Convenient Details: Bolt-on handle can be mounted on left or right side, and storage clip keeps wand secure


  • Manufacturer #: 190328
  • Faceted Pump Type: Piston
  • Tank Capacity: 4 gal.
  • PSI: 160
  • Pump Type: Piston