Solo 425 4-Gallon Backpack Sprayer Review

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Updated June 27, 2022
90 Expert Rating

Fit for use in both a home garden or on a large farm land, the Solo 425 4 Gallon Backpack Sprayer is a reliable tool that you can always count on to help keep pests away from your plants, or even nourish them when it’s time to apply fertilizer. The professional piston backpack sprayer is also pretty popular with buyers especially on Amazon, and this is because of the perfect balance that it strikes between functionality and price. The farming tool is well capable of heavy duty work, and it comes with padded shoulder straps that provide greater comfort to your shoulders especially when there’s a lot of ground to cover. Go ahead and get to the end of this review to see if it’s got what it takes to be the best backpack sprayer for your lawn garden.

Why We Like It – Solo 425 4-Gallon Backpack Sprayer

Anyone in search for a good sprayer will definitely be happy to have come across the Solo 425 4-Gallon Backpack Sprayer. It’s got padded shoulder straps for easy carrying, an interchangeable pump handle, an extendable 28-inch wand, and is backed by a 1 year warranty.

  • Option of 4 different nozzles to choose from
  • Wand is extendable to 48 inches
  • 1 Year Warranty
  • Manual use


Made of high density polyethylene plastic, the 4 gallon tank of the professional piston backpack sprayer has a capacity that is similar to what you’ll find with other backpack sprayers (i.e the Chapin 61900 4 Gallon Commercial Stainless steel sprayer), but what stands out on this model is the interchangeable piston pump. You can choose to have the pump handle on either the left or the right hand of the tank, making it easily customizable to the user’s preference. The pump sprayer also reaches a reasonably high pressure of 90 PSI, and this pressure is dispensed through one of four nozzles that can be used on it. The 4 different nozzles are the plastic adjustable, the fan spray, the hollow cone and the jet stream spray nozzle, and they all have different applications depending on the kind of spraying that you want to do. You might be looking for a plant to place on your doorway or kitchen window. Look at our silk boston fern review for an option that might suit you.


The Solo 425 4 gallon professional piston backpack sprayer features a 28 inch unbreakable wand that’s longer than that of the Field King Professional 190328 backpack sprayer, but if you’d want to have even more extended reach, there’s a 48-inch nylon reinforced high pressure hose that you could connect it to and make your work a lot more easier. Wearing the Solo backpack sprayer is also pretty easy because it is well balanced, and the pressure pump is well within reach especially when walking. The 4 gallon tank is also ultraviolet resistant, and this is important because whatever solution that you’re carrying will always be protected from the sun’s rays especially when you have to be outside for long periods of time. Interested in a high pressure patio, fence, or car cleaner? Look at an option in our Sun Joe SPX3000 review.


Made in the United States, this 4 gallon professional pump sprayer comes backed with a 1 year warranty just like the Chapin International 61500 ProSeries Translucent sprayer, and this helps inspire confidence in customers in the product’s ability to deliver good service. It comes with viton seals that are chemical resistant, making the sprayer fit for use in any form of pest control. The sprayer also works well in a wide variety of tasks & applications, and because of this, it has received a lot of positive customer reviews from buyers who continue to use it.

Solo 425 4-Gallon Backpack Sprayer Wrap Up

If you proceed to order the Solo 425 or other related products from Amazon and it arrives with a couple of issues or manufacturing defects that had not been anticipated, do not hesitate to contact the company to let them know about your predicament. Solo has been known for their good customer service, so you should get sorted out pretty quickly.