Best Knapsack Sprayers (Explained)

Best Knapsack Sprayers

A knapsack sprayer is one of the best investments you can have for your garden. Don’t be intimidated by it. This product is no longer just for commercial use. You can have one for your garden, no matter what size it is

Here is our list of the best knapsack sprayers on the market.

Best Knapsack Sprayer

The Field King Max Backpack Sprayer is really a premium quality knapsack sprayer of the highest order. It has multiple brass nozzles, fantastic pressure and is incredibly comfortable. Other good choices include the CHAPIN 61500, the SOLO sprayer, PetraTools Battery-Powered Backpack Sprayer, Roundup Backpack Sprayer, VIVOSUN Garden Pump Pressure Sprayer and the Field King Backpack Sprayer.

At A Glance List

NameGallons /
#1 Field King Max Backpack Sprayer for Professionals
>>> BEST FOR: ♦ Best Buy ♦
4 gallons /
12.8 lbs
97%Check Price
Read Review
#2 CHAPIN 61500 Backpack Sprayer
>>> BEST FOR: Keeping chemicals tightly sealed
4 gallons /
10.6 lbs
95%Check Price
Read Review
#3 SOLO Backpack Sprayer
>>> BEST FOR: Hard-to-reach areas
4 gallons /
10.3 lbs
94%Check Price
Read Review
#4 PetraTools Battery-Powered Backpack Sprayer
>>> BEST FOR: Convenience
4 gallons /
15.07 lbs
93%Check Price
Read Review
#5 Roundup Backpack Sprayer
>>> BEST FOR: Ease
4 gallons /
10 lbs
93%Check Price
Read Review
#6 VIVOSUN Garden Pump Pressure Sprayer
>>> BEST FOR: Small gardens
1.3 gallons /
3.04 lbs
92%Check Price
Read Review
#7 Field King Backpack Sprayer
>>> BEST FOR: Quick pressurization
4 gallons /
12.8 lbs
90%Check Price
Read Review
#8 CHAPIN 61800 Backpack Sprayer
>>> BEST FOR: Women and seniors
4 gallons /
9.2 lbs
90%Check Price
Read Review

What Is a Knapsack Sprayer?

This product is also known as a backpack sprayer. It is an apparatus that allows you to spray water and herbicides, sometimes fungicides and insecticides, on your plants with efficiency. 

It consists of a tank-like item, which you then put on your back like a knapsack or backpack, hence, the name. There is also a spray nozzle that would simplify the application process. 

Let’s elaborate

The purpose of the product is so you can pump all these important liquids into your garden at a fast pace. 

You can get the job done fast, leaving you more time to do other things. 


The knapsack sprayer was used for large agricultural lands and commercial farms. 

Today, backpack sprayers come in different forms and sizes to cater to those who need them for backyard gardening. 

As popularity rose

The designs for the knapsack sprayer have also been upgraded. Some products come with a water gauge, so you will know when it’s time to refill the tank. 

There are also different nozzles to choose from so that you can choose the right type of spray for your garden or for a specific type of plant. 


These products were pretty standard. They were also really expensive, which was why only companies and large farms would invest in them. 

Not only that, they were not mass produced. They were actually difficult to get hold of. 

It was a good thing

Manufacturers eventually realized that knapsack sprayers could also be very helpful in backyard gardening. 

Now, they are widely available for home use.  

What Do Knapsack Sprayers Do?

The role of the knapsack sprayer is to simplify the water and other liquid delivery to the garden. 

In a way, you are doing the liquid application in a professional manner, without spending money on professional services. This product could easily save you money. 


It will save you time since the product allows you to do things fast. It will also allow you to save your energy since it simplifies the task. 

You can put various things on the knapsack sprayer–anything that your garden may need. Among these things are the following:

  1. Water
  2. Weed killer / herbicide
  3. Fungicide
  4. Fertilizer

Here’s the goal

There should be even distribution of water and chemicals into the plants or into the garden. That’s the technical advantage of having a knapsack sprayer.

It has to be calibrated though. 

There are three major components of the knapsack sprayer:

  • Tank

This is where you put your liquid. The bigger it is, the more types of liquids you can put in it. However, you also have to consider the person who will wear the knapsack sprayer when it comes to choosing the size of the tank. 

  • Hose

This is where the liquid will pass through. At the end of it, you can add the nozzle. There are different kinds of nozzle and you can choose the one best suited for your garden. The hose simplifies the process. It will be easier for you to distribute the liquid. 

  • Straps

It won’t be called a knapsack if it doesn’t have the straps. This will allow you to keep the tank on your back. It will be easier to move around the garden that way. More importantly, the straps make sure the tank will be secured to prevent accidents. 

Chemicals and Knapsack Sprayer

What Makes a Good Knapsack Sprayer?

A knapsack sprayer will make it easier for you to distribute water and herbicides and other chemicals evenly to all plants in the garden. 

However, knapsack sprayers are not created equal. Some are great, some are just good, and there are also those that shouldn’t be on the market.

Here are the important things you should consider when buying a knapsack sprayer:

Type / power source

There are two types of knapsack sprayer: manual and motorized.

The sprayer works by pumping the equipment to create pressure so that the liquid will travel through the hose and will then be ejected through the nozzle. It could be pumped manually or through a motorized system. 


The motorized sprayer is so much easier to use. But it’s also more expensive. So, should you pay more for convenience? That’s really up to you!

Most of the motorized sprayer work with a battery. This means that it has to be charged before use. 

That’s another thing!

You also have to look at the power of the battery. If you just have a small garden, then you don’t need a powerful one. And it follows that you will need a more powerful pack for a larger garden. 

Pump type

There are also two types of pump: piston pump sprayer and diaphragm pump sprayer.

Of the two, the latter is more durable. It’s also a bit pricier. However, the investment would be worth it if you have to deal with herbicides or harsh chemicals regularly. 

Tank material

Since you’re dealing with potentially harmful chemicals, you have to make sure that the tank material is durable and safe. 

Tank capacity

How much liquid can the tank handle? While it’s true that the tank with a larger capacity should be better because it can carry more liquid, you also have to consider the size of your garden and your ability to carry the weight on your back. 


This will be around you, so it should be made of comfortable material. Other than that, you also want it to be durable since it will be carrying weight. The straps should be adjustable so anyone can help out in the garden. 


Speaking of weight, you have to make sure that the entire product is not heavier than you. You have to lug the backpack sprayer for some time, so you should find the appropriate weight for you. 

Don’t go directly for the heavier set thinking that it will carry more liquid and is made of better-quality material. You should look at the overall setting of the product and check if it’s the right one for you. 

Hose & wand

The water passes through the hose and the wand from the tank. It goes out of the nozzle that is attached at the end of the wand. The wand is stiff so that you can spray properly. You have to look at the material and length when looking at the hose and wand components.


Since you will be using your hands for spraying, find a knapsack sprayer with a good handle. It should be comfortable to grip. 


There are different kinds of nozzles. Look for the type of spray that you think will be good for your type of plants and type of liquid. 

Important note:

Some of the chemicals that you will put in the knapsack sprayer are harsh and corrosive. Make sure all the materials of the sprayer are herbicide-rated. 

This means that the products are made specifically for herbicide use and other similar substances. 

To know more about the knapsack sprayer, check this out:

Editor’s Note


I hope you love the products that I recommend here! Just so you know, I work with Amazon and other affiliate partners and may be compensated from the links below.

Read full details here.

List of Best Knapsack Sprayers

#1 Field King Max 190348 Backpack Sprayer for Professionals


Product Spec

  • Power source: manual
  • Tank material: polyethylene
  • Wand material: polypropylene
  • Tank capacity: 4 gallons
  • Pump type: piston / diaphragm
  • Nozzle/s: adjustable, wide flat fan, narrow flat fan & foaming
  • Dimensions: 15” x 22.5” x 9.5”
  • Weight: 12.8 lbs
  • PRICE: $$$
Knapsack Sprayer

Precision is going to be key when spraying chemicals. You don’t want your plants to be sprayed with too much or too little. 

The Field King Max Backpack Sprayer for Professionals is a great tool when looking for precision. That’s why the brand claims to be the product intended for professionals. 

Look at the specs:

The tank has a four-gallon capacity. That’s really a good volume and enough for a populated garden that’s more than the average size. 

It comes with four nozzles that are made of brass. The types of nozzles are adjustable, wide flat fan, narrow wide fan, and foaming nozzle. 

It is also compatible with TeeJet nozzles. 


The maximum pressure is 150 PSI (pounds per square inch). That would be enough to spray on areas that are hard to reach. 

The spray could also reach around 30 feet. That’s also possible with the 21-inch wand. 

Isn’t that fantastic?

It truly is. This is really handy if you have a large garden. 

What’s even more fantastic is the safety mechanism. This is designed to prevent internal leak.


We are dealing with harsh and harmful chemicals here. They have to be handled with care. 

You don’t want any of the chemicals dripping down your back. This knapsack sprayer will make sure you’ll never experience that. 

This product is sealed with Vitron rings to ensure chemical resistance. 

It’s so easy

You can change the seals easily without using any tools. The entire pump works just as easily. 

You can use any type of herbicide or fungicide on this product. It’s the same with fertilizers and anything else your plant needs. You can put liquid in it, powder, and water-soluble agents. 

Easy on the hands too

The product has a premium shut-off feature that is comfortable to grip. There is also a lockable trigger to make sure the working hand doesn’t get fatigued. 

It’s also reversible so that both left-handed and right-handed individuals can use it. 

You won’t have a clogging problem here as the product has a removable in-line filter. So, every time you put in a refill, no debris will go in. 

There’s more!

Your back will not feel the weight of the tank. The back padding is a breathable and full coverage ballistic nylon harness. There is lumbar support and adjustable chest clip.

The tank will be secured and there will be no bouncing. 


There aren’t a lot of bad things you can say about this product. But there are still minor inconveniences. 

For example, the rubber that makes the handle comfortable to grip could be lost early on. It doesn’t stay put. 

That’s a big blow

You have to constantly pump this thing in order to work efficiently. That rubber is going to be important. 

Here’s the deal

This is an amazing product. It doesn’t leak, there are multiple nozzles to choose from and is even compatible with other nozzles. More importantly, it allows precision spraying.  



  • Provides precision spraying
  • Comes with 4 nozzles and will accept other nozzles
  • Can work as piston or diaphragm pump
  • Capable of spraying hard-to-reach areas
  • Spray reaches 30 feet
  • Comes with 21-inch wand
  • Safe to use
  • Easy to use
  • Premium shut-off mechanism that’s easy on the hands
  • Anti-clogging system
  • Comfortable backpack pad


  • Rubber on handle isn’t glued tightly
  • You have to pump continuously for precision spraying
Check availability

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#2 CHAPIN 61500 Backpack Sprayer

Keeping chemicals tightly sealed

Product Spec

  • Power source: manual
  • Wand material: poly
  • Tank capacity: 4 gallons
  • Pump type: piston
  • Nozzle/s: adjustable poly cone & fan tip
  • Dimensions: 17.25” x 9.75” x 18.25”
  • Weight: 10.6 lbs
  • PRICE: $$

Knapsack Sprayer

One of the most important features that you should look for in a knapsack sprayer is leak prevention. The CHAPIN Backpack Sprayer ensures safety as it keeps chemicals tightly sealed in the tank. 

More on that later

This is an unbelievably good knapsack sprayer that has a capacity of four gallons. 

To complement that, the tank’s mouth opening is four inches. That’s amazing because it would prevent spillage during refills. 

You know

Handling chemicals is not always safe. This tank can handle all types of substances for the plants, from fertilizers to herbicides, fungicides, and even pesticides.

It can hold liquid or powder and water-soluble solutions.

More important features:

The product also has a two-stage filtration system. There is one filter at the top to prevent debris from penetrating the tank. 

There is another filter at the shutoff part. 

Moving on

There are only two nozzles to choose from, the adjustable poly cone and the fan tip. At least, it’s still enough to provide you with some versatility. 

The entire thing is also easy to assemble. You don’t even need to read the instructions to do it. Although, reading the instructions will ensure safety. 

It’s about the design

The no-leak mechanism has a lot to do with the design. The spout is at the top of the tank. Usually, only the mouth opening is found at the top of the tank. 


Having padded shoulder straps is important because you want to be comfortable even if you have been spraying for hours. However, they are not very durable.

If you want the straps to last, don’t always fill the tank. 


The on-and-off valve doesn’t always work. The off function has to be managed sufficiently to work. 

Here’s something to think about:

When you have to use harsh chemicals, safety in handling is of utmost importance. A backpack sprayer that functions right is going to be important. This product doesn’t leak and that’s very essential. 



  • No leaks
  • Lightweight
  • 4-inch mouth opening
  • 2-stage filtration system
  • Easy to assemble
  • Padded shoulder straps
  • Great design
  • Easy to clean


  • Straps are not very durable
  • On-and-off valve acts up a lot
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#3 SOLO 10207 Backpack Sprayer

Hard-to-reach areas

Product Spec

  • Power source: manual
  • Tank material: polyethylene
  • Wand material: plastic
  • Tank capacity: 4 gallons
  • Pump type: piston pump
  • Nozzle/s: plastic adjustable, fan spray, hollow cone, jet stream
  • Dimensions: 9” x 20” x 15”
  • Weight: 10.3 lbs
  • PRICE: $$

Knapsack Sprayer

If there are hard-to-reach areas in your garden, the SOLO Backpack Sprayer is going to be your best friend. 


The product only has a 20-inch wand. While this is long enough, some of the knapsack sprayers have 21-inch wands. 

But that’s not the deal here. The set also comes with a 48-inch nylon reinforced high-pressure hose for extended reach. 

To understand it better

The high-pressure hose will straighten out the entire thing when there is pressure. That will make it easier to use for areas that you can hardly spray on. 

It comes with four nozzles for versatility. These are plastic adjustable, fan spray, hollow cone, and jet stream. 

Not only that

It’s also compatible with TeeJet nozzles, giving you even more options. 

There is a commercial shutoff valve to help lessen hand fatigue. This is particularly a good addition because of the pumping that needs to be done.

To prevent leaks

Viton seals complete the set. They are placed in parts that would only ensure that liquids don’t leak while also adding to the longevity of the product.  

The tank is made of ultraviolet-resistant material. That’s good since you might be spraying under the heat of the sun. 

To complete that

There are padded straps to make lugging the backpack sprayer a bit more comfortable. 

Still on the issue of the tank, it has a large mouth opening, which is 4.25 inches. This would make pouring liquid so much easier. 

It also makes cleaning just a tad easier. 


The straps are quite cheap. It looks cheap and seems cheap. It might not last for long especially if you maximize the four-gallon capacity. 

The entire thing is also hard to put into storage. It’s really not well thought out, or the thought process was limited to functionality and not what goes after. 

Another thing

This product would require a lot of pumping before it starts straying. You just need to be ready to put in the work. 

Anyway, this product works really great.  

All in all

This is truly an efficient product that would be fantastic for hard-to-reach areas. That’s because the 20-inch wand is complemented with a 48-inch nylon-reinforced high-pressure hose.  



  • Great for hard-to-reach areas
  • Reinforced with long hose
  • Comes with 4 nozzles and compatible with others
  • Commercial shutoff valve lessens hand fatigue
  • Interchangeable handle for left- and right-handed people
  • Durable
  • UV-resistant tank
  • Large 4.25-inch opening
  • Easy to clean


  • Cheap straps
  • Difficult to store
  • Needs a lot of pumping before it works
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#4 PetraTools Battery-Powered Backpack Sprayer


Product Spec

  • Power source: battery (8 Ah lead acid)
  • Wand material: heavy-duty plastic
  • Tank capacity: 4 gallons
  • Nozzle/s: show head, 2-in-1 mist to stream, double-head mist, single-head mist
  • Dimensions: 20.9” x 15.1” x 9.2”
  • Weight: 15.07 lbs 
  • PRICE: $$$

Knapsack Sprayer

If you don’t want to tire your hands from pumping, then you ought to buy a battery-powered sprayer. The PetraTools Battery-Powered Backpack Sprayer is definitely a great choice. 

Take a look at its many advantages:

The tank capacity is four gallons but you can actually do 200 gallons in one charging. That’s because a fully charged 8 Ah lead-acid battery could allow you to do six to eight hours of spraying without stopping. 

You don’t need to do a single pump in those hours. It works on 70 PSI and it comes with an adjustable pressure knob. 


The handle has a plastic squeeze for spraying with a locking mechanism. 

The product also has a wide mouth. This will make you fill the tank with ease. It also allows you to clean the tank easily. 

Worried about debris?

Don’t be! There’s a screen filter that would prevent debris from getting into the tank when you fill it up with your liquid–whether you are using herbicides, fertilizers, and even pesticides. 

This also works with power and other water-soluble solutions. 

The tank also has gallon markings so you will have a guide on how much solution you are using. It’s very helpful when mixing different products. 

Here’s the best part:

The set comes with six nozzles. That would give you a lot of versatility. The nozzles are shower head, 2-in-1 mist to stream, double-head mist, and single-head mist. 

The pressure adjuster can also help you adjust the spray that comes out of the nozzle.

What else?

The shoulder straps are extra padded for comfort. 

But but but

The hose connection doesn’t seem so sturdy. It doesn’t look like it would last for years. 

Also, the wand hook gets loose after some time. 

To make matters worse, the assembly instructions weren’t that great. 

To conclude

If you want something convenient where you don’t have to pump multiple times before the sprayer works, then this is definitely the product for you. You can even spend the entire day spraying as the battery on this thing can last six to eight hours. 



  • Very convenient
  • Great for large gardens
  • 6 to 8 hours of spraying
  • Wide mouth for easy filling and cleaning
  • Comes with filter
  • Gallon markings
  • 6 nozzles
  • Features pressure adjuster 
  • Extra padded straps for maximum comfort


  • Hose connection doesn’t seem sturdy
  • Wand hook gets loose after multiple uses
  • Assembly instructions can be confusing
Check availability

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#5 Roundup 190314 Backpack Sprayer


Product Spec

  • Power source: manual
  • Wand material: polypropylene
  • Tank capacity: 4 gallons
  • Pump type: piston
  • Nozzle/s: adjustable, high-volume fan, low-volume fan
  • Dimensions: 9” x 15” x 22”
  • Weight: 10 lbs
  • PRICE: $$

Knapsack Sprayer

If you want a functional knapsack sprayer without the complication, the Roundup Backpack Sprayer is exactly that. 

It’s really easy to use. 

Let’s start with the assembly

It’s really simple to assemble. You won’t be met with any complications at all. 

The tank has a four-gallon capacity. Although, when you fill the tank all the way up, the entire backpack becomes immensely heavy. 

At least, the back padding comes with lumbar support. It has adjustable added straps for added comfort. 

It’s for everything!

It doesn’t matter what you use this product for: herbicides, fungicides, fertilizers, and even insecticides. It works really well. 

To complement the tank is the heavy-duty 21-inch wand. The wand also has a comfort grip and shut-off mechanism to ensure that your working hand will not be too tired. 


There is a locking feature for continuous spraying. It also comes with an in-line filter to prevent debris from getting into the tank during refill.

There are also Viton seals to ensure there will be no leaks. At least, it works for the tank, but more on that later. 

About the nozzles

There are three that come with the knapsack sprayer: poly adjustable, high-volume fan, and low-volume fan. It’s also compatible with TeeJet nozzles. 

More importantly, this is a durable product. You could use it for years, as long as you store it properly. 

There are a few negatives:

For one, the spray tip leaks a little. It’s not that much but since we are talking about chemicals here, it’s not ideal. 

But the bigger deal is the pressurization. It takes quite some time before you can pressurize this thing.  

To elaborate

You have to do at least 10 pumps for this to start working. After a few sprays, you have to do another 10. But that’s what a manual sprayer is about. 


This is still a good knapsack sprayer especially if it’s your first one. It’s easy to assemble and very easy to use.  



  • Extremely easy to use
  • Simple to assemble
  • Heavy-duty 21-inch wand
  • Lock feature for continuous spraying
  • In-line filter
  • Comfortable to wear on the back
  • Durable


  • The tip leaks a little
  • Hard to pressurize
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#6 VIVOSUN Garden Pump Pressure Sprayer

Small gardens

Product Spec

  • Power source: manual
  • Tank material: heavy-duty plastic
  • Tank capacity: 1.3 gallons
  • Nozzle/s: adjustable
  • Dimensions: 17.04” x 7.72” x 7.17”
  • Weight: 3.04 lbs
  • PRICE: $

Knapsack Sprayer

The VIVOSUN Garden Pump Pressure Sprayer is great for small gardens. It’s also ideal for women and senior citizens because it’s really light at just 3.04 pounds. 


It’s light because the tank capacity is only 1.3 gallons. It’s only really for small gardens. 

This is also ideal for indoor use. It’s practical if you have indoor plants, but this can also be used to spray some cleaning solutions inside your home.  

Moving on

There is a large mouth, so you could easily put in the liquid or any of the substances you need to use. It would be easy to fill without spilling. 

There are also calibrations on the side, which will give you an idea how much liquid you are putting in. This is extremely helpful when you are mixing substances like powder-like herbicide or fertilizer and other solutions. 

You know

This may be a small sprayer but it has a long wand. It’s over 22 inches, which makes it easy to use for hard-to-reach areas. 

The tank also has a thickened bottom for durability. This means that if you’re tired of carrying the tank, even if it’s not that heavy in the first place, you can put it down on the ground with much worry. 

Great design!

Yep! There is a clasp at the side where you can put the wand. It allows you to store the product easily. 

There are some misses

For one, after using it for quite some time, the valve near the sprayer starts leaking. That’s never good. 

Putting it all together was also an issue. There were no clear instructions for assembly. 

In conclusion

This is a versatile backpack sprayer that you can use for indoor and outdoor spraying. It’s small and it’s light, which is ideal for small gardens and other spraying activities like cleaning and disinfecting. 



  • Lightweight
  • Can be used indoors
  • Large bowl-shaped mouth for easy filling
  • There are calibrations on the side
  • 22-inch wand
  • Versatile
  • Thickened bottom for durability
  • Easy to store


  • Valve near the sprayer leaks after some time 
  • No clear assembly instructions
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#7 Field King 190348 Backpack Sprayer

Quick pressurization

Product Spec

  • Power source: manual
  • Tank material: polyethylene
  • Wand material: polypropylene
  • Tank capacity: 4 gallons
  • Pump type: piston & diaphragm
  • Nozzle/s: brass adjustable, (2) flat fans & foaming
  • Dimensions: 15” x 22” x 9.5”
  • Weight: 12.8 lbs
  • PRICE: $$

Knapsack Sprayer

It’s nice when the knapsack sprayer works with fewer pumps. It gives your hand some respite. That’s the Field King Backpack Sprayer for you. 

Let’s take a look at the details

It has a four-gallon capacity, which is really quite large for home garden use. 

The internal piston pump delivers up to 150 PSI. The design is supposed to make sure that there will be no leaks. 

After all

It comes with Viton seals and a lockable shutoff. But was it truly effective? More on that later. 

Back to the specs. It has a 21-inch wand made of durable polypropylene. That’s a good length to apply liquid to hard-to-reach areas. 


It comes with an in-line filter. This way, you don’t have to worry about debris getting into the tank when you are refilling. 

What’s also interesting is that it can do the work of both the piston pump and diaphragm pump. 

Amazing, right?

You can also easily change the seals without tools because of the pumps that are accessible. 

There are four nozzles, too. These are the brass adjustable, two flat fans, and a foaming nozzle. Even better, it is compatible with TeeJet nozzles. 

So, what can it handle?

You can put any type of chemicals for plants like herbicides and fungicides, and others. You can also put powders or other water-soluble solutions. 

The internal paddles will keep them mixed. These paddles are activated through pumping. 

It’s also great that the handle can be reversed so that it can be comfortably used whether you are right-handed or left-handed. 

It’s not perfect, of course!

While the top part doesn’t leak, thanks to the Viton seals, it’s the hose part that’s a problem. It’s the part where the hose connects to the pump. 

Unfortunately, leaking is such a big deal since we are dealing with chemicals here. So, you have to watch out for this part every time you use it. 

Then here’s a reminder:

Don’t ever leave the wand under the heat of the sun. It’s so flimsy it will start to show some cracks and chipping. 

The thing is

When it comes to a manual knapsack sprayer, you have to expect that your hand will do a lot of work. At least, with this Field King, you don’t have to pump as many times as other sprayers just to start pressurizing. This is a good product for your hand. 



  • Easy to pressurize
  • Comes with 21-inch wand
  • Features in-line filter
  • Can do the work of both piston and diaphragm pump
  • You can easily change the seals
  • Comes with 4 nozzles and will accept other nozzles
  • Internal paddles come in handy when mixing solutions and powders
  • Handle is versatile, can be for left-handed or right-handed people
  • Easy to assemble


  • It starts leaking after multiple uses
  • Wand cracks and chips when left under the sun
Check availability

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#8 CHAPIN 61800 Backpack Sprayer

Women and seniors

Product Spec

  • Power source: manual
  • Wand material: reinforced PVC
  • Tank capacity: 4 gallons
  • Nozzle/s: adjustable fan nozzle
  • Dimensions: 12.8” x 8.4” x 22.2”
  • Weight: 9.2 lbs
  • PRICE: $$

Knapsack Sprayer

At just 9.2 pounds, the CHAPIN Backpack Sprayer is quite light, considering that the tank has a capacity of four gallons. 

That makes it ideal for women and senior citizens. 

Here’s the deal

The product is ideal for all kinds of fertilizers, weed killers, and pesticides. 

It has a wide mouth, around four inches. That makes it easier for you to pour liquid into the tank. They won’t spill so much or at all. 

In the same manner

It would be easy for you to clean the tank. 

The product also has a three-tank filtration system. This is so debris will not penetrate the tank when you pour in your plant solutions. 

The filters are also easy to clean. 


There is an adjustable brass spray nozzle that could provide a 23-foot horizontal stream and 25-foot vertical stream. 

It also comes with a 20-inch wand, which is complemented with a long hose. The PSI is between 40 and 60. 

The straps are padded so you could carry the tank comfortably for hours. 

What else?

It’s easy to put together. That’s always a good thing as you won’t have to waste your time. 

It’s also really easy to pump. It’s quite good for your working hand. 


The sprayer tip is quite flimsy. The brand could really do better than what it provides. 

Also, as time goes back, the nozzle area will start to leak. 

That’s a no-no!

You never want any type of leak when it comes to substances that could be harmful. 

And while the straps are quite comfortable, they were not made with durability in mind. If you keep lugging the full four gallons in the tank, chances are the straps might not survive.


If you don’t think you have the energy to lug around a heavy backpack sprayer, this is a better product than most when it comes to weight. It’s lighter than most of its counterparts, which means you can reserve most of your energy for actual work. 



  • Lightweight
  • Wide mouth
  • Easy to clean
  • 3-stage filtration system
  • Padded straps for comfort
  • Long spraying hose
  • Easy to assemble
  • Easy to pump


  • Flimsy sprayer tip
  • The nozzle area starts to leak after some time
  • Straps aren’t durable
Check availability

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In Summary

A knapsack sprayer will make it easy for you to spray fertilizers, herbicides, and fungicides in your garden. It can also be used in spraying pesticides. The wand allows you to expand your spraying capacity. 

Find the best knapsack sprayer to make your work even easier. Here is a rundown of some of the best sprayers that made it into our list. 

Best Knapsack Sprayer for Precision

Wouldn’t it be great if you can spray just the right amount of solution to your plants? Whether we are talking about fertilizer or herbicides. Sometimes, too little or too much could be bad for the plants. The Field King Max Backpack Sprayer is fantastic for precision.

Best No-Leak Knapsack Sprayer

A sprayer that leaks is quite annoying. It could be dangerous, too, depending on the chemical you are handling. The CHAPIN Backpack Sprayer is excellently made to keep everything tightly sealed inside the tank. 

Best Knapsack Sprayer for Hard-to-Reach Areas

With a 20-inch wand complemented by a 48-inch hose that stiffens with pressure, the SOLO Backpack Sprayer can help you spray at areas that are generally hard to work on. 

Best Knapsack Sprayer for Small Gardens

The VIVOSUN Garden Pump Pressure Sprayer is ideal for small gardens. With a capacity of just 1.3 gallons, it’s light and it’s great for just any small spraying activities. You can even use it indoors.

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