Expert Rating

The Chapin 61900 4 Gallon Commercial Stainless is absolutely everything needed or desired in a backpack sprayer rig, earning it top dog on the best backpack sprayer list. If your budget is tight then consider the Chapin 61500, or if higher pressures are needed then check out the Field King Professional 190328 backpack sprayer.

Why We Like It – Chapin 61900 4 Gallon Commercial Stainless

The Chapin 61900 4 Gallon Commercial Stainless is equipped with a stainless-steel wand , has an ample 4 gallon tank capacity, includes a trifecta of nozzle selections, and has a comfy harness system, delivering on its stated purpose as a Tree and Turf Pro Backpack Sprayer.

  • Blockage preventing filtration system
  • Leak-proof 4-gallon tank
  • Comfortable long wearing harness
  • Relatively expensive
  • Hose somewhat short


Up to most any application, the Chapin 61900 manual backpack sprayer can handle whatever you got –tree turf, turf pro commercial, even firefighting. The ginormous translucent poly tank provides fluid level visuals, with a wide mouth opening for easy filling. A multi-stage debris filter reduces clogging. The 20” stainless steel extension wand at the end 48” reinforced hose provides sufficient reach. Sprayer includes 3 nozzles, and has enough PSI to spray 20+ feet in both horizontal and vertical orientations. Some experimentation is needed to find the best nozzle for the job, but unlike Goldilocks, with just three choices some people may be left longing for a fourth “just right” nozzle.


Most backpack sprayers share a similar design, and the 61900 follows established form. Build quality is good and materials are solid. The cushioned grip shut-off assembly includes a pressure gauge to monitor 40-60 psi operating pressures. The pump handle also has a cushion grip and can be set for either right or left-handed operation. The 48” PVC hose length is adequate, although another 6-12” of hose would be an improvement. The stainless-steel wand holds up to bumps and bruises. The harness system includes nicely padded shoulder straps, and most importantly a larger padded hip belt than many sprayers, to comfortably take much weight off your weary shoulders (4 gallons of liquid is over 33 lbs.).


If you’ve mostly used handheld sprayers, switching to a backpack sprayer is transformative especially when jobs take some time. The 61900 is a turf pro commercial backpack sprayer and is priced accordingly as one of the more expensive units available. Even if you’re not a Pebble Beach greens-keeper, if you routinely spray or tend bigger plots then the extra gallon of material and reliable performance are certainly worthy considerations in assessing value. While pumping the 61900 is relatively easy thanks to its ergonomics, it is still a manual backpack sprayer. Those wanting completely effortless spraying and who have the budget might want to consider the MY 4 SONS Battery Powered Backpack Sprayer by M4.

Chapin 61900 4 Gallon Commercial Stainless Wrap Up

Overall, the Chapin 61900 4 Gallon Commercial Stainless stands out as a backpack sprayer that measures up to demanding use cases, and one that can handle even the most volatile fertilizers and pest control products. From landscapers to homeowners, the 61900 is a tree turf pro backpack sprayer that delivers everything you’d expect to get virtually any spraying job done

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Brady Meyers

Brady Klinger-Meyers is a writer based in Pennsylvania. He regularly contributes to websites such as Hardcore Droid, Gamepur, and Homebli. His work remains primarily in technology, from video game journalism to consumer technology.

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