Chapin 63900 4 Gallon Self-Cleaning Backpack Sprayer With Hand Sprayer Combo


PrintWarning: Cancer and Reproductive Harm.

Print Advertencia: Cáncer y Daños Reproductivos.

PrintAvertissement: Cancer et Dommages Reproductifs.


Best in class, ease and innovation combined, the Chapin Self-Cleaning Backpack sprayer is loaded with features for the DIY Homeowner yet rugged enough for the Professional. Boasting the innovative and patented JetClean, self-cleaning pump technology, that directs a powerful burst of liquid through the tank filter with each downward pump stroke.
  • 4-Gallon translucent tank
  • Extra wide 6-inch mouth opening for easy filling and cleaning
  • Patented JetClean self-cleaning pump technology
  • 3-stage filtration system to keep filter clog-free from debris and residue
  • Stainless-steel wand with cushion grip poly shut-off
  • 3 nozzles: fan, cone and adjustable brass
  • Swing-away handle for right or left hand use, folds up for storage
  • Padded shoulder straps and back pad
  • shoulder straps and back pad will give you hours of comfortable spraying. Compatible with common fertilizers, weed killers and pesticides


  • General Purpose Cleaning
  • Fertilizers
  • Weed & Feed
  • Fungicides
  • Herbicides
  • Pesticides


Chapin Product Manual graphic - red book with Product Manual

Chapin 63900 Product Manual


Tips & Maintenance Videos

Technical Specs

Model Number 63900
Tank Size 4 Gallon
Tank Mouth Opening 6 Inches
Tank Construction Plastic
Pump Type Piston over diaphragm
Hose Length 48 Inches
Hose Material Clear reinforced
Shut-Off Material Poly cushion-grip
Shoulder strap Deluxe padded straps with lumbar support
Warranty 5 Year Limited
Spray/Flow Rate (GPM) .4-.5 gpm
Nozzle(s) adjustable brass cone, poly-fan, poly-cone,
Filters Self-cleaning, handheld comes with in-tank filter
Frame Chrome-plated steel
Handle Right or left mount
Shipping Weight In Pounds 7
Package Dim. In. (LxWxH) 8.25 x 8.25 x 18.2
Item Dim. In. (LxWxH) 8 x 8 x 18
Item Weight In Pounds 10.5
Extension Wand Material stainless steel
PSI - Operating Pressure 40-60 PSI
Extension Wand Length
20 Inches
Spray Stream Max Vertical
23 Feet
Spray Stream Max Horiz.
25 Feet


*Spray distance is dependent on many factors such as adjusted nozzle orifice size, tank pressure, wind interference and angle of inclination. Spray distances may vary based on user's specific application.