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SOLO 425 4-Gallon Piston Backpack Sprayer, Wide Pressure Range up to 90 psi

  • Based on 1,568 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, May 23
Order within 17 hours and 15 minutes
Available payment plans shown during checkout

Style: Sprayer


Features

  • Easily spray liquid disinfectants, fertilizers, herbicides, pesticides with Solo's high-performance piston pump for tree, shrub and plant protection
  • Solos 425 backpack sprayer includes a 20-inch unbreakable wand that securely connects to a 48-inch nylon-reinforced high-pressure hose for an extended reach
  • Four easily changeable commercial-grade spraying nozzles-Plastic Adjustable, Fan Spray, Hollow Cone, Jet Stream nozzle and is TeeJet compatible
  • Designed with a commercial shut-off valve that securely locks in either the on or off position to minimize user fatigue, the pump handle is interchangeable for left or right-hand operation
  • Solo's rugged metal frame with an extra-large tank opening makes it easy to fill and clean quickly
  • Thoughtfully designed with Viton seals placed in key locations to ensure long service and durability

Description

Built for comfort. Built for convenience. Built to last. SOLO sprayers are professional grade, triple test inspected and made in the USA. The SOLO 425, with a connecting rod-actuated piston pump, can produce a wide pressure range of up to 90 psi and is capable of performing virtually every spraying task. With a proven piston pump, you will be reliably equipped for applying spray liquid or insecticides in your garden. A low number of wearing parts and sturdy technology ensure a long service life and minimum maintenance. The large filling aperture for convenient filling of the tank and smooth-running pump make spraying pleasant work. The ergonomic design contours to your back for greater comfort. The Solo manual 4-gallon 90 psi high-pressure backpack sprayer features an ultraviolet resistant tank, felt padded polyester straps, a heavy duty pressure cylinder and reversible pump lever. The high pressure backpack sprayer is made of all high-grade, corrosion resistant plastic, with no metal or rubber parts made vulnerable to chemicals. The chemical backpack applicator includes a connecting rod actuated piston pump to produce a wide pressure range up to 90 psi, 4-foot high pressure hose, a spray tube of 20 in. and can carry up to 45 pounds. With its easy operating shut off valve, durable plastic parts, and 4-1/4-inch opening, it can handle disinfectants, fertilizers, herbicides, and pest control products for efficient tree, shrub, and plant protection. This tool is backed by a 1-year limited manufacturer's warranty. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); From the Manufacturer Since its introduction to the US market in 1964, Solo's popular 425 backpack sprayer has been the standard by which all backpack sprayers are measured. High-density polyethylene tank with ultra-violet inhibitors allows for unmatched durability and ultra-violet protection. Large 4.25-Inch opening for easy filling and cleaning. Shut-off valve and wand with an overall length of 28 inches for hard-to-reach places. 4-foot high-pressure hose. With its connecting rod-activated piston pump, the 425 is capable of producing a wide pressure range of up to 90-psi, and is capable of performing virtually every spraying task. Easily and effectively handles disinfectants, fertilizers, herbicides, pesticides, and formulations for tree, shrub and plant protection and wood and concrete finishing and treatments. Solo backpacks are constructed of high density polyethylene and other chemical resistant materials. A 1-year warranty is provided. Given proper maintenance, the sprayer should last for millions of pumps and many years of use. Each Solo sprayer is equipped with an adjustable, flat spray, hollow cone and jet stream nozzle to accommodate virtually every spraying need. Padded straps with pull tabs make adjustments quick and easy. Built-in strainers, screens and filters help keep debris out of nozzles. Pressure can be regulated to 15, 30 , 45 or 60 psi by means of a built-in pressure regulating valve. Unbreakable wand prevents damage common to brass and brittle plastic wands. Viton seals, gaskets and O-rings provide excellent chemical resistance and durability. See more

Brand: SOLO


Tank Volume: 4 Gallons


Color: white


Recommended Uses For Product: Pest Control, Fertilizer sprayer, Herbicide sprayer, Sanitizing


Material: High Density Polyethylene (HDPE)


UPC: 720343425000


Global Trade Identification Number: 00


Model Name: 425-101


Model Number: 10207


Brand Name: SOLO


Recommended Uses For Product: Pest Control, Fertilizer sprayer, Herbicide sprayer, Sanitizing


Included Components: Nozzle


Item Dimensions W x H: 20"W x 15"H


Hose Length: 48 Inches


Item Weight: 4.7 Kilograms


Tank Volume: 4 Gallons


Material: High Density Polyethylene (HDPE)


Style: Sprayer


Color: white


Maximum Pressure: 9E+1 Pound per Square Inch


Power Source: Manual


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Fast and comfortable
Style: Sprayer
Sprayer works great. Fill it on a bench or table and slide it on. It fits comfortably, and you never have to take it off until you are done with the entire contents. Great pressure easily maintained with a gentle, constant pump with one hand while directing the spray with the other. Can’t find anything I don’t like about it. ... show more
Reviewed in the United States on August 16, 2024 by Lenny Macca

  • The pack is reasonably comfortable to wear
Style: Sprayer
I used this all last summer to spray fish and seaweed based fertilizer around my 2 acres of orchard and gardens. It works well for me. I bought a longer tube for the wand so I can reach higher in my trees. The pack is reasonably comfortable to wear, even when full because it is well balanced and the handle for the pressure pump is easy to access when walking. When spraying my trees I tend to lock the trigger in the ON position and use the pressure pump to maintain a constant pressure. I find it very easy to use. The only problems that I have had are that the soft plastic tube came loose from the main tank and the trigger sometimes doesn't work correctly when locked in the ON position for too long. The plastic tube coming loose caused my pants to get wet because the fluid started coming out through the bottom. It was an easy fix and just required adjusting the tension on the clamp holding it in place. I think it came loose partly because I had put too much pressure in the tank. I deal with the trigger problem by sometimes releasing the lock when walking around and it seems to be fine. Even with the small problems that I had I still love this unit and am glad I bought it. I would certainly buy it again if I needed a second pack. ... show more
Reviewed in the United States on April 28, 2015 by A. Holland

  • Sprayer
Style: Sprayer
Great product. You can’t go wrong with solo.
Reviewed in the United States on May 25, 2024 by Great boots and easy to wear all day.

  • Good sprayer, even for this gal !!
Style: Sprayer
It works well, and I left off the 5th star only because the straps don't have a chest-level cross-latch. Some might find this picky, but when you have 4 gallons of chemicals on your back, that weight tends to pull the backpack off your shoulders. As a 5'3" tall woman with good upper body strength, it adds stress to my back. My solution was to hand-fashion a cross latch with Velcro and nylon strap. Problem solved Otherwise, It works like a charm. + I like the fact that the gallon measurements are in raised in the plastic itself. It won't wear off! + The pump is easy to work, and I find that as I walk & spray, its easy to keep the pressure for continuous spraying. + It has a nice screen / filter at the opening. Just unscrew the top, fill with chemical(s), replace the screen/ filter, fill it with water from the hose, and you're good-to-go. Sometimes there's debris in water lines, and the screen/filter is the same heavy duty material found in the backpack itself to prevent those particles entering your water reservoir and, subsequently, clog the tube system . + I really like the base, designed to keep it upright, even on uneven surfaces. Since I'm short, I can set it on a trash can, add chemicals and water, and just step into the straps and hoist it onto my shoulders, without stressing my back (by lifting it from the ground up to my shoulders). ... .The base keeps it steady, even when I'm not graceful in hoisting it onto my back! I've been using it for about 3 months now, and it's so easy, and I don't get tired (as I did with the smaller, hand held type sprayers), so I find I use it much more often, and the weeds don't get ahead of me. I would buy it again, for sure. Hope this helps --- Leslie in East Tennessee ... show more
Reviewed in the United States on June 18, 2017 by Leslie

  • I wanted a sprayer similar to what the pest control companies use and this sprayer meets my criteria
Style: Sprayer
I wanted a sprayer similar to what the pest control companies use, and this meets the criteria. It was easy to unpack and get started with. The pump arm works great. It is so nice to be able to pump a sprayer without having to put it on flat ground. And I do not have to pump it as much as one of those cheap sprayers that you carry and have to place on the ground to pump. I can keep my spray pattern consistent by quickly and easily doing one more pump using the arm, which really speeds up my work. Only time will tell how well it holds up, but so far I love it. Well worth the money. ... show more
Reviewed in the United States on December 2, 2022 by California Dreamer

  • Did not last.
Style: Sprayer
Used this sprayer 5 times and it no longer works.Piston is locked up and it won't pressurize.My last Solo sprayer lasted over 20 years.They don't make them like they used to!
Reviewed in the United States on September 3, 2024 by spink

  • Solo is thhe Number 1 brand
Style: Sprayer
I buy them at HD now as they are so much cheaper.
Reviewed in the United States on July 23, 2024 by steven Kristoph

  • We have two now because they are great.
Style: Sprayer
I first bought one of these for weed killer as we live on 5 acres and end up with a lot of weeks in the driveway and our walks. It took 5 minutes to unbox and assemble and almost as long to fill with water and weed killer. It has a pump handle on the side to pressurize the system and you can pump as you walk and spray. I have used it exstensively since we purchased the first one and just purchased a second for anti-algae spray (we live in FL where everything turns green) so we can try to keep our RV and Lanai clean. They hold four gallons of liquid so about 32lbs full. The straps are what you might expect for the price range, but for a normal homeowner they are more than adequate. If I were purchasing this for a job I might consider different shoulder straps because these are not terribly comfortable after an hour of spraying. All in all very worth the price and they spray quite well. ... show more
Reviewed in the United States on May 9, 2021 by FL-Reviewer

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