1831: 3-Gallon Industrial Open Head General Duty Sprayer


  • $136.99
    Unit price per 
Shipping calculated at checkout.

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Chapin's 1831 industrial open-head general duty sprayer is ideal for fertilizers, weed killers and pesticides. Designed for professional applications, this sprayer is constructed with Tri-Poxy steel for maximum chemical resistance.

  • 3-gallon Tri-Poxy tank to protect against rust, corrosion, and denting
  • 4" wide mouth opening for easy filling and cleaning
  • Compatible with common fertilizers, weed killers and pesticides
  • Brass wand and adjustable brass nozzle for a variety of applications
  • Brass shut-off with lock-on feature for fatigue-free spraying
  • Unique Tri-Lock seal feature that locks the pump cap tight

Applications: weed and pest control, fungus control

Documentation & Support

Chapin 1831 Product Manual
Chapin Warranty Information
Industrial Technical Support Videos

Technical Specs

Model Number 1831
Tank Size 3-gallon
Tank Mouth Opening 4-inch wide
Tank Construction Tri-poxy ® steel
Pump Type piston
Hose Length 42-inches
Hose Material reinforced
Shut-Off Material Zinc W/ brass coating
Lock-On Feature lock-on feature
Anti-Siphon Feature none
Shoulder strap none
Battery Type none
Spray Hours none
Warranty none
Spray/Flow Rate (GPM) .4-.5 gpm
Nozzle(s) brass cone
Filters none
Frame none
CFV none
Handle tri-lock cap, metal-alloy
Shipping Weight In Pounds 9.7
Package Dim. In. (LxWxH) 8.3 x 8.3 x 24.5
Item Dim. In. (LxWxH) 8.1 x 8.1 x 24.2
Item Weight In Pounds 9.2
Pressure relief valve none
Extension Wand Material brass
PSI - Operating Pressure 40-60 psi
Motor Size none
Extension Wand Length
Spray Stream Max Vertical
Spray Stream Max Horiz.


*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.