61800: 4-Gallon (15-Liter) ProSeries Professional Backpack Sprayer


  • $99.99
    Unit price per 
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Chapin's 4-gallon (15-liter) backpack sprayer with positional pump handle allows you to comfortably control this unit whether you're left or right handed. It comes with chemical-resistant seals for harsher weed control, pest control or fertilizers. Multiple nozzles are included.
  • 4-Gallon translucent tank 
  • 3-Stage filtration system with in-tank removable/cleanable filter
  • Cushion grip poly shut-off with three nozzles for a variety of applications
  • Positional pump handle
  • Padded shoulder straps to accommodate a full backpack for hours
  • Chemical-resistant seals
  • Compatible with common fertilizers, weed killers and pesticides
  • 2-year limited warranty

Applications: weed and pest control, fertilizing, fungus control, general purpose cleaning

Technical Specs

Model Number 61800
Tank Size (gallons) 4
Tank Mouth Opening (inches) 5
Tank Material poly
Pump Type piston
Hose Length (inches) 48
Hose Material clear, reinforced
Extension Wand Length (inches) 20
Extension Wand Material poly
Seal Material chemical-resistant
Shoulder Straps padded shoulder straps
Nozzle(s) adjustable brass cone, poly-fan, adjustable poly-cone
Filters 3-stage
Handle left or right mount
Shut-off Material poly cushion-grip
Lock-on Feature yes
Pressure Relief Valve no
Spray/Flow Rate (GPM) 0.4 - 0.5
Operating Pressure (PSI) 40 - 60
Item Dimensions L x W x H – inches) 14.75 x 9 x 21.9
Item Weight (pounds) 10.5
Warranty 2-year limited

*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.

Due to our ongoing product improvement process, product specifications may change without notice.