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7 Best Backpack Sprayers of 2022 – Backpack Pump Weed Sprayer Reviews

Nothing is as warming as getting your hands on a product that adequately serves its purpose; reaping spectacular results. For gardeners, owning the best backpack sprayer is undoubtedly one of the essentials if your garden performance has to reach its full potential.

There is simply a huge pool of backpack sprayer brands with every single one of them claiming to give you no less than the best user experience.

But the truth of the matter is that there is no guarantee. You probably have an interesting story of your own if you’ve experienced several sprayer brands in the past. Every gardener has one. Good or bad.

Here is our roundup of the best backpack sprayers that you may want to check out ahead of any purchase.


The Best Backpack Sprayer on the Market 2022

1. Go Professional 190348 Backpack Sprayer

Field King Max 190348 Backpack Sprayer for Professionals Applying Herbicides

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Coincidentally how we get to kick off with the ‘King’ –literally.

Field King Max 190348 proves a great choice especially since it features a no-leak internal pump design. This innovative move ensures you’re protected against dangerous chemicals dripping on you.

The sprayer’s pump is also connected to the internal agitator that handles numerous types of liquids, water-soluble solutions, and powders. Internal paddles ensure the liquid is well mixed. The result is a uniform spray solution. Better yet, the internal pressure chamber can generate sprays reaching 20 feet in the air.

This is also a model built to last with a durable plastic tank and brass internal components. You will find significantly fewer parts that succumb to wear and tear in this machine. Don’t we all want a product that will give value for money?

You won’t need any tools to change seals. Even an armature can do this. The easy access pump enables swapping in minutes.

You also have a sprayer with 4 additional nozzles (also accepts Teejet nozzles), a 21-inch stainless steel wand and Viton seals for chemical resistance.

This sprayer is also fitted with a large tank and a filtration basket to keep out pieces of debris during filling. The one-way valve prevents any spills when the tank is inverted.

Another noteworthy feature of the Field King Professional is its ability to build pressure up to 150 PSI. There is tremendous flexibility to enjoy here in controlling the flow rate, droplet size, and spray pattern.

A little drawback is on the straps which we found not as comfortable as in other models such as Chapin.


  • The no leak pump design is an excellent precaution
  • Four extra nozzles and accepts Teejet nozzles
  • The parts are easily replaceable and repairable
  • Builds pressure up to 150 PSI
  • Internal agitator achieves uniform solutions
  • Easy to assemble
  • Good spraying capability


  • Liquid levels are hard to track with solid colored tanks
  • A little uncomfortable straps
  • No lumbar support and pressure gauge

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2. My 4 Sons 4-Gallon Battery Powered Backpack Sprayer

M4 MY4SONS 4-Gallon Battery Powered Backpack Sprayer Wide Mouth with Steel Wand and Brass Nozzle, Battery Included New extra comfort heavy duty straps

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We find this 4-gallon battery-powered yard sprayer another great option.

First, the battery-powered operation means that there is no pumping required. The 8h lead-acid battery delivers excellent battery life and will actually last you three times longer than other units.

You also don’t have to worry about running out of power while spraying since the battery life indicator lights helps you track the power levels. Thanks to the high battery life, you can actually pump at least 200 gallons of chemicals in just one round.

And if you thought changing batteries may take long enough to impend your work time, the super-fast battery door implies the exact opposite. About 30 seconds is all you need to change your battery and get started again.

My 4 Sons Battery-Powered Backpack Sprayer is designed to be among the few sprayers in the market with high efficiency, and automatic 60 PSI pump. With such pressure, you can easily use the sprayer for targeting distant trees and branches and still achieve maximum efficiency.

With an improved translucent design, My 4 Sons lets you track liquid levels quite easily. The professional standard finish and incredible user control, among other aspects, have seen this product become one of the favorite options among customers.

A backpack sprayer with a short wand can be such a pain since you have to bend for efficiency. However, My 4 Sons has a long durable stainless wand that is adjustable to give you desired flexibility for short and long-range applications.

If you feel that the above is still not enough, you will be thrilled to know that this backpack sprayer also comes with 4 easy to attach nozzles. These nozzles include a flat tee jet nozzle, an adjustable brass nozzle, a double, and a fine mist nozzle.

The large-mouth is designed to ensure that you fill your sprayer easier and faster and with minimal spillage. There is also a screen filter which prevents debris and dirt from entering the tank.

Despite all the outstanding features, this unit weighs 14 lbs which can feel too bulky after extensive use.  However, the weight is quite manageable considering you have all the other great features to pride with this backpack sprayer.


  • The heavy-duty shoulder straps are bolted to the sprayer to prevent incidences of disconnection and dropping.
  • Performs excellently with most chemicals
  • The plastic wand enables acidic and bleach applications.
  • 8 Ah lead-acid battery which lasts 3 times longer than the lithium-ion battery.
  • Extra-long wand, variable nozzle output and adjustable pressure for unmatched efficiency


  • 14 lbs weight becomes a little bulky after extensive use
  • Comes with a minimal selection of nozzle attachments

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3. Roundup 190314 Backpack Sprayer 4 Gallon

Roundup 190314 Backpack Sprayer for Fertilizers, Herbicides, Weed Killers & Insecticides, 4 Gallon

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If you are planning to spend more time working outdoors, you sure do require a pressure sprayer that can keep up while offering you extra comfort. Roundup 190314 certainly fits in the picture.

Those deluxe padded straps, a waist strap plus built-in lumbar support will give you hours of outdoor comfort. No more back and chest pains!

This 4-gallon sprayer also enables you to bundle up all your spraying needs in a single purchase (weed and pest control, cleaning decks and siding, and growing vegetables and flowers).

Roundup 190314 also comes with a heavy-duty poly wand, a shutoff professional with lock-on feature for continuous spraying.

On the versatile end, your Roundup 190314 features 3 additional nozzles: poly adjustable, high volume fan and low volume fan. This quality and reliable model is among the best options you can adopt for herbicides, weed killers, and commercial liquid fertilizers. The 4-gallon capacity makes it ideal when you’re working on relatively large farms.

Another great feature of this sprayer is its 10 lbs which is a quite lightweight for a 4-gallon tank. Ideally, the more you fill, the heavier it becomes, but in this case, the low base weight of the sprayer really helps.

Roundup 190314 features a 21-inch wand which, even though standard, is heavy duty and corrosion-resistant.  Ideally, the 21- inch wand ensures that you won’t be hunched over while working and you can reach into tight spaces. It also has a recognizable overall performance and can spray with a power of up to 90 PSI.

On the downside, the straps are not quite long lasting but are comfortable when new. This backpack sprayer works well as it is, but it would perform even better if you can upgrade it with add-ons such as quality shoulder straps and different nozzles.


  • Viton seals extending throughout ensures chemical resistance and longevity
  • Adjustable padded straps with a waist belt and built-in lumbar support
  • The durable poly wand offers a comfort grip as well


  • Additional nozzle attachments are not sufficiently provided
  • Not highly durable, especially the shoulder straps.

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4. D.B. Smith Field King 190328 Backpack Sprayer (Best for the Money)

Field King 190328 Backpack Sprayer, 4 Gallon,

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The last thing you would want from a knapsack sprayer is dealing with a leaky tank. It is not only annoying, but it could be potentially harmful, especially if you are working with corrosive chemicals. To avoid such cases, the D.B. Smith Field King 190328 features an internal no leak pump design, which prevents any spills or drips from coming into contact with your back.

Better yet, this pump provides up to 150 PSI, which is double that provided by some standard backpack sprayers in the market. This gives you ample flexibility in controlling the spray pattern, droplet size, and flow rate. The pump is also connected to an internal agitator which mixed the content in the tank to ensure uniformity in your spray solution.

Another crucial feature that any backpack sprayer owner can relate with is the nozzles. The D.B. Smith Field King 190328 comes with 4 nozzle options. This includes the adjustable brass nozzle, wide flat fan, narrow flat fan, and the forming nozzle. Even better, you can also attach TeeJet nozzle to enhance your sprayer’s functionality.

In a nutshell, this is an easy to use sprayer, and you can spray even when waling and pumping at the same time. It does not need too many pumps to get the right pressure. You can also fix the handle on either side for right and left-handed use.

Despite the incredible features and functionality, a few users have complained that the straps are not as comfortable. This could be attributed to the fact that it does not have lumbar support like the Roundup 190314. The pumping is also a bit noisy.


  • The internal piston can generate up to 150 PSI which can reach up to 20 feet into the air
  • Pumping is easy and efficient and does not require too many pumps to get to the right pressure.
  • You can attach the pump handle on the left or right side
  • Features a no-leak design
  • Compatible with TeeJet nozzle


  • The back strap is not very comfortable
  • Quite noisy
  • No pressure gauge

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5. Chapin International 61500 Backpack Sprayer For Fertilizer, 4 Gal

Chapin 61500 Backpack Sprayer for Fertilizer, 4 gal

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Are you looking for a knapsack that will fit perfectly with all your household, gardening, and farming spraying needs? The Chapin International 61500 is just the perfect choice to use when spraying pesticides, herbicides, soluble fertilizers, weed killer, and also for watering.

With its portable design and a large 4-gallon tank, this sprayer is a great option if you are out for size and comfort. Better yet, despite its large capacity, it has a fairly small footprint and features the Euro-style design where the hose is connected at the top of the tank.

Filling the tank is easy and without spillage, since it has an opening of measuring 4 inches. Although it will need some effort to lift it to your back when full, the sturdy straps are filmy secured and have padding on the shoulder and chest for maximum comfortability.

This Chapin International 61500 has a relatively long wand which comes in handy for taller people since you don’t have to bend while spraying.  More so, it features a 2-stage filtration system which prevents dirt from finding its way to the interior.

The complete pack requires very little assembling. With the translucent tank, you can quickly fill the tank with precision. Another essential feature is its ergonomic design, which boosts comfort and creates room for easy maneuverability.

On the downside, since the hose is connected on the left-hand side of the tank, it’s hard to use with your right hand. However, it is still easy to pump since the handle moves swiftly delivering 40-60 PSI.


  • Easy to maintain and does not get clogged easily
  • The ergonomic design and padded straps add to its comfortability
  • Wide opening measuring 4 inches for precise filling without spilling
  • Fairly long ward
  • No leakage


  • You can only use your left hand for pumping

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6. Chapin 61900 4-Gallon Backpack Sprayer

Chapin Backpack Sprayer

Image: Chapin

The Chapin 61900 features a stainless steel wand, a brass nozzle, and a heavy-duty tank with a triple filtration system. The one feature that we are always looking for in a backpack sprayer is a study harness.

This allows you to get the weight off your shoulder, especially during extended use and is an expectation that Chapin 61900 has met. The shoulder straps are thick, wide, and fully padded. There is also a chest and waist belt.

Due to its weight when full, it might be a bit awkward putting it on your back from the ground. You can, however, place it on a table first and proceed from there. Once on your back, the harness makes the sprayer really comfortable.

With its massive 4 gallon tank, you can cover a vast area. Its piston pump can deliver up to 50 PSI and can reach up to 20 feet using the stream of the adjustable nozzle. 

From a safety perspective, this sprayer is practically leak proof. There is no need to worry about harmful chemicals running down your back.

Fully compatible with standard herbicides, pesticides, and commercial liquid fertilizers, it comes with 3 nozzles. Hence, you can use it on different applications.

Another cool feature of this series from Holy Chapin is the control flow valve.  The valve limits the flow to 21PSI.

It is set in such a way that, when the pressure falls below this level, it shuts off completely to prevent chemicals from dripping where it’s not supposed to.

With this backpack, you can walk, spray, and pump at the same time. But it requires frequently pumping to maintain the pressure which can get tiring on your hand.


  • 4-gallon tank is large enough for both domestic and commercial use
  • Compatible with conventional pesticides, herbicides, and liquid fertilizers
  • Triple filtration system guarantees optimal performance
  • Comes with 3 nozzles for flexible applications
  • Padded shoulder, waist and chest straps for maximum comfort


  • Frequent pumping needed which could be tiring


7. Chapin 61700 4-Gallon SuperSpray Backpack Sprayer

Chapin 61700N 4-Gallon SureSpray Backpack Sprayer For Fertilizer, Herbicides and Pesticides

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Did we save the best for the last? We sure did, and as you would expect, it had to be from Chapin International.

This company has managed to maintain its reputation and mission to provide quality products. And if positive reviews from customers is something to go by, then we certain that numbers don’t lie.

The Chapin 61700 unit has a high flow rate, and this means that you can handle massive amount of work in the shortest time possible. It features 3 nozzles for flexibility, 4-gallon tank for large projects, and padded shoulder straps for comfort.

You can use this sprayer with different chemicals, including pesticides, herbicides, or weed controls. The mouth opening is 4 inches wide, which ensures there is no spillage when filling the tank. It also makes it easy to clean.

With the 3-stage filtration, you can be sure to have a clog-free stream and solution. Getting rid of clogs upholds the durability of the wands and nozzles.

As with every Chapin’s we’ve mentioned, the paddled shoulders straps are also heavy-duty, and you can carry full tank for long without too much exhaustion.

The only drawback is that there has been complains from some customers about the quality of the plunger, and we believe that the company could do better in providing quality ones.


  • Padded shoulder straps for comfort
  • Compatible with standard weed controls, fertilizers, and pesticides
  • Features a 3-stage filtration system and has in-tank removable filters
  • 4-inch wide mouth opening to avoid spillage and a translucent tank for easy filling
  • Durable threaded hose pipes


  • The quality of the plunger could be better
  • The straps could do better with more padding

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Buying Guide

backpack sprayer Wand

Even the so-called ‘best’ is not precisely the best until you’ve checked if it matches your individual needs. Your first step before any purchase is to take some time and assess the purpose of the sprayer you are looking to own. You also don’t want to purchase a less than durable backpack sprayer, especially when you have intensive sprayer needs.

Other factors you should pay attention to include working mechanism, calibration, wands and lances, capacity, brand, and not any least, your health.

1. Purpose 

backpack sprayer Thank

Apart from determining the exact sprayer for the precise job, there is the need to assess the kind of solution that can go in your tank and produce the best results. Diaphragm sprayers, for instance, will do better with harsher chemical solutions than piston sprayers. Pressure requirements and the area will also determine the kind of backpack sprayer to buy.

2. Durability

backpack sprayer Shoulder straps

If you’ll be using your sprayer regularly, then you need to look out for a reputable brand known to deliver quality and durable products.  Go for the pump that stands to dispense liquids for a longer stretch of time. Check too that the tank is crafted from high-density materials, preferably polythene. Inspect other components, including seals and hoses. 

3. Calibration

backpack sprayer reviews

Swath width, walking speed, and output per minute are the primary considerations when calibrating your backpack sprayer. Use only water to do your calibration. Here is our quick step by step guide to successful sprayer calibration:

  • Clean and inspect your sprayer thoroughly before embarking on the calibration process
  • Use pegs to mark out the corners of a 25m2 plot on the area you want to treat. A 25m2 area can take any configuration provided it adds up.
  • Mark your tank with a permanent marker and fill it with water to the marked line.
  • Spray the marked plot with water keeping constant the speed and pressure that you intend to use for the rest of the job. Do this as accurately as possible, missing no spots and without over-spraying and spillage
  • Cautiously remove the sprayer once done. Move to a level ground and measure in liters the amount of water required to refill the water to the mark you made in step 3

4. Manual or Motorized

Whether you choose a manual or motorized backpack sprayer, it is entirely a matter of personal preference. In general terms, manual sprayers will serve you best when treating foreign infestations. Motorized varieties, on the other hand, are much suited to extensive area spraying.

5. Budget

backpack sprayer Pump

Based on retail prices, battery-powered sprayers cost about twice as much as the manual sprayers, but we’ve seen the difference reduce over time. Gas-powered models are priced 3 to 5 times higher than a pump backpack sprayer.

6. Spray Wands and Lances

There is a wide range of lance options you can adopt to ensure safety and efficiency when using your backpack sprayer. Ensure the spray wand you choose fits appropriately to eliminate incidences of leakages and still provide an accurate aim. Check out for compatibility with caps and nozzles that come with your sprayer.

7. Capacity

backpack sprayer Nozzle

Backpack sprayers come in different volumes. Your choice depends on the amount of work you seek to accomplish. Sprayers with sizes as huge as 4 gallons are ideal if you’re working on large farms. Lesser volume alternatives such as 3.2 gallons will do and are relatively cheaper- if weight lifting is not your thing. 

8. Safety, Health, and Comfort

These are among the most crucial factors whenever you are starting out with any new tool. Sprayer equipped with padded straps and tanks with ergonomic designs will offer you extra comfort.

In terms of safety and health, it is always advisable to use a face mask at all times and follow the necessary safety procedures. Also, despite the sprayer you are using, you should always rinse the tank at least three times after use.


All the mentioned backpack sprayers are excellent choices, and your decision will narrow down to the factors we have discussed above in the guide.

On our end, our best choice is the Chapin 61900 backpack sprayer. For starters, it’s compatibility with most standard chemicals such as herbicides, pesticides, and chemical fertilizers. It is also very comfortable.

Its thick, wide, and padded shoulder, waist, and chest straps come in handy since you no longer have to deal with back, neck, and shoulder aches after extensive use. And what better than a hand pump that is almost effortless and less laborious?

Another incredible feature worth noting is the fact that it comes with a pressure reducing valve and when you pump it up to 50 PSI or more, it gets down to 20 PSI. This  helps maintain even sprays. When it gets to 20PSI, it stops spraying to prevent dribbling or even coverage.

But as we earlier stated, your choice is dependent of various factors, and what works for you might not work for the other person. And not every option is crystal perfect; we just have to choose a struggle!

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