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Chapin 64800 4-Gallon Professional Backpack Poly Sprayer

4.1 out of 5 stars 142 ratings
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
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Purchase options and add-ons

Brand Chapin International
Tank volume 4 Gallons
Colour White
Recommended uses for product Applying fungicides
Material Metal
Product Dimensions 38.6W x 56.6H Centimetres
Style Knapsack
Power source Hand Powered
Included components Unit^Instruction Guide
Model name 64800

About this item

  • 4-Inch wide opening
  • Poly shut off
  • Adjustable cone and fan nozzle
  • Deluxe padded straps with waist/chest strap
› See more product details

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Chapin 64800 4-Gallon Professional Backpack Poly Sprayer
This item: Chapin 64800 4-Gallon Professional Backpack Poly Sprayer
$162.75
Get it by Saturday, Jun 14
In Stock
Ships from and sold by 鶹.ca.
+
Chapin 6-8138 Shut-Off Assembly
$27.99
In Stock
Ships from and sold by 鶹.ca.
+
Chapin 66000 Brass Adjustable Cone Nozzle with Viton
$16.75
In Stock
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Total price:$00
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Product details

  • Is discontinued by manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 56.64 x 38.61 x 23.37 cm; 4.88 kg
  • Date First Available ‏ : ‎ April 21 2012
  • Manufacturer ‏ : ‎ Chapin International
  • Place of Business ‏ : ‎ BATAVIA, NY, 14021 US
  • ASIN ‏ : ‎ B001EQN4ZW
  • Item model number ‏ : ‎ 64800
  • Country of origin ‏ : ‎ USA
  • Customer Reviews:
    4.1 out of 5 stars 142 ratings

Product information

Technical Details

Manufacturer ‎Chapin International
Place of Business ‎BATAVIA, NY, 14021 US
Item model number ‎64800
Product Dimensions ‎56.64 x 38.61 x 23.37 cm; 4.88 kg
ASIN ‎B001EQN4ZW

Additional Information

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Chapin 64800 4-Gallon Professional Backpack Poly Sprayer

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Product description

Diaphragm design. Used mostly for wettable powders fungicides. Diaphragm design more forgiving than piston due to powders abrasiveness. Large pump makes pressurizing quick with less pumping. Internal 4 position spray valve for expert pressure control from 15 P.S.I. to 60 P.S.I. Padded carrying straps for fatigue free operation. Easy operating spray handle with continuous spray feature. Multi use nozzle tips included. Positionable pump handle for right or left hand use.

Top Brand: Chapin International

Highly Rated
100K+ customers rate items from this brand highly
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Important information

Safety Information

CAUTION: This product includes a pressurized tank and is intended for use with various liquids, including chemicals. Always handle with care and avoid direct skin or eye contact with the liquid contents. Do not exceed the recommended pressure setting. When not in use, release any remaining pressure and store in a cool, dry place, out of reach of children and pets.

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Price$162.75$99.89$253.75$93.46-7%$156.74
Was: $168.90		$168.73
Delivery
Get it by Saturday, Jun 14
Get it by Saturday, Jun 14
Get it by Sunday, Jun 15
Get it by Saturday, Jun 14
Get it by Monday, Jun 23
Get it by Saturday, Jun 14
Customer ratings
4.14.1 out of 5 stars142
4.34.3 out of 5 stars11
4.14.1 out of 5 stars8
4.04.0 out of 5 stars1,701
4.54.5 out of 5 stars132
4.24.2 out of 5 stars1,522
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Customer reviews

4.1 out of 5 stars
142 global ratings

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Customers say

Customers like the functionality, spray performance, and build quality of the pump sprayer. They mention it does the job, sprays like a dream, and has an excellent spray reach. However, some customers have reported that it's uncomfortable and the pump isn't efficient. Opinions are mixed on the build quality.

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FunctionalitySpray performanceBuild qualityComfortPump performance
5 customers mention "Functionality"5 positive0 negative

Customers like the functionality of the product. They mention it does the job, is very useful, and good.

"...It works fine once you get used to it. Learn how much you can handle in terms of capacity...." Read more

"Very useful and good" Read more

"Works as designed..." Read more

"It operates very well and sprays like a dream..." Read more

4 customers mention "Spray performance"4 positive0 negative

Customers are satisfied with the spray performance of the product. They mention it sprays like a dream and has an excellent spray reach.

"...Both sprayers are comfortable and have an excellent spray reach...." Read more

"...Overall, for about 100bucks, this can be a useful sprayer...." Read more

"It operates very well and sprays like a dream..." Read more

12 customers mention "Build quality"4 positive8 negative

Customers have mixed opinions about the build quality of the pump sprayer. Some mention it's a good unit and good for all uses. However, others say it has declined and is prone to failure. They also mention the little catch made of plastic broke off and both sets of bolts broke off while they were pumping the sprayers.

"...Both sets of bolts broke off while I was pumping the sprayers...." Read more

"Good unit. I live on a farm. Good for all uses. I have two of them. Thanks Gary" Read more

"...Speaking of straps. These are horrible. Too narrow and insufficient padding. The result is pinching and chafing of the shoulders...." Read more

"...The sprayer seems to be built with cheap materials which are not meant to last...." Read more

3 customers mention "Comfort"0 positive3 negative

Customers are dissatisfied with the comfort of the pump sprayer. They mention it's uncomfortable and the result is pinching and chafing of the shoulders.

"...Too narrow and insufficient padding. The result is pinching and chafing of the shoulders...." Read more

"It does the job but NOT very comfortable to wear. Sprayer shaft is light weight could easily snap if trod on. Spray pattern is good and adjustable...." Read more

3 customers mention "Pump performance"0 positive3 negative

Customers are dissatisfied with the pump performance of the product. They mention it's not efficient, constantly pumping, and isn't able to create enough pressure.

"...pump lever has quite a bit of play in it and the pump itself is not able to create enough pressure as a result of that...." Read more

"Used once per year for 3 years now has a pump failure issue. Dont waste your money. This thing is JUNK!!" Read more

"...I also found it to be far inefficient. constantly pumping. Would not recommend." Read more

Battery won't charge
2 out of 5 stars
Battery won't charge
Good product until battery failed to charge after 6 uses. Always stored dry and kept clean. No way to contact Black and Decker. Sprayer is useless now...
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Top reviews from Canada

  • 鶹 Customer
    5.0 out of 5 stars Never got to use it.
    Reviewed in Canada on December 7, 2023
    Verified Purchase
    As it turns out it was to big for my weight.
    Helpful
     Report
  • Jay
    4.0 out of 5 stars Great Sprayer. Faulty Handle Bolts.
    Reviewed in Canada on November 17, 2021
    Verified Purchase
    I have used Chapin Sprayers my entire life and have never had a problem until now. I purchased two fo their backpack sprayers on here. I purchased the regular 4 gallon backpack sprayer and the diaphragm backpack sprayer for my powdered pesticides. Both sprayers are comfortable and have an excellent spray reach. I like everything about them other than the fact that the bolts they include to bolt the handle to the sprayer are not as strong as they used to be. Both sets of bolts broke off while I was pumping the sprayers. That has never happened on the sprayers I purchased in the past so I am thinking I got bolts from a faulty batch or something as both sprayers were purchased very close together. The problem is that I live in a very secluded area and none of the stores around here carry the correct size bolts so now I am stuck not being able to spray at a time that is most important to spray. right before the first frost. This is big inconvenience for me and now I have to plan a day to drive the hour and a half to the nearest town that has the correct sized bolts. Chapin should include a couple of extra sets in the box in case this problem should arise as I have had it happen twice on the last two I bought within a week of one another. Not impressed.
    3 people found this helpful
    Helpful
     Report
  • BRIAN W.
    5.0 out of 5 stars Works as designed
    Reviewed in Canada on November 27, 2023
    Verified Purchase
    Helps cover my whole yard,
    Helpful
     Report
  • Gary Jewell
    5.0 out of 5 stars Price and easy to use
    Reviewed in Canada on May 27, 2022
    Verified Purchase
    Good unit. I live on a farm. Good for all uses. I have two of them. Thanks Gary
    Helpful
     Report
  • BULLSHIPPER
    3.0 out of 5 stars Ok sprayer but real benefit is building up your arms pumping-LOL
    Reviewed in Canada on June 3, 2025
    Verified Purchase
    Emphasis...you need to continue to pump...build a rhythm of keeping the pressure up while you're spraying.
    Make sure you set up the pump arm on the side opposite of your wand hand. It works fine once you get used to it.
    Learn how much you can handle in terms of capacity. You don't want to be wrestling 4 gallons of liquid on to your back from the ground. If you do go for full capacity, place the pack on an elevated surface so that you can walk into the straps.
    Speaking of straps. These are horrible. Too narrow and insufficient padding. The result is pinching and chafing of the shoulders.
    Overall, for about 100bucks, this can be a useful sprayer. I think it's a good buy if you're in good shape and don't mind tweaking your product to make it fit your needs.
    Helpful
     Report
  • MB
    1.0 out of 5 stars Built with cheap materials, prone to failure
    Reviewed in Canada on April 1, 2022
    Verified Purchase
    Bought this sprayer less than 3 months ago to use around the house and for a few lawn customers. The pump lever has quite a bit of play in it and the pump itself is not able to create enough pressure as a result of that. Today the pump actually blew up on me while on a job.

    The sprayer seems to be built with cheap materials which are not meant to last. After each use, I took the time to thoroughly wash out the sprayer and yet it still failed on me. FYI, I am certified in pesticide application and have been trained in the proper use and cleaning of sprayers.
    2 people found this helpful
    Helpful
     Report
  • SCG
    5.0 out of 5 stars Works well so far
    Reviewed in Canada on June 11, 2020
    Verified Purchase
    The harness could use a crossstrap on the chest to keep the shoulder straps on
    Helpful
     Report
  • Elmar Heissler
    4.0 out of 5 stars Backpack sprayer
    Reviewed in Canada on July 5, 2023
    Verified Purchase
    Was looking for an economical sprayer to apply organic product to a vegetable garden. Found one on sale but was too busy to get to the store on time. Ordered this one, it was cheaper, good quality and was delivered on time . Only one complaint, the lid is a little finicky to thread on.
    Helpful
     Report

Top reviews from other countries

  • John
    5.0 out of 5 stars Very pleased
    Reviewed in the United Kingdom on June 13, 2013
    Verified Purchase
    This sprayer conforms to uk legal requirements for professional users by being able to adjust pressure for different pesticides. As it is American the pressure adjustment is in PSI rather than bar but the calculation is14.5 PSI to one bar. It has four adjustments ranging from 15 to 60 PSI. (1 to 4 bar) The sprayer comes with a selection of nozzles, tools and instructions. It easy to put together, is well made and is comfortable to use.
    Delivery time was as stated. On paper this looked like a good sprayer at a great price but in reality it is a great sprayer at a fantastic price.
    Report
  • Holly Jones
    5.0 out of 5 stars Easy to use and no issues
    Reviewed in the United States on February 26, 2025
    Verified Purchase
    Using this on 4 acres of fence line. No leaks and easy to wear with no pressure points. Easy to operate and works just fine for weed killer.
    Report
  • zain
    4.0 out of 5 stars chapin 64800
    Reviewed in the United States on September 21, 2012
    Verified Purchase
    This backpack sprayer sure beats the hell out of my one gallon for exterior spraying. extremely fast volume output so you can get the job done fast. very accurate, sprays how and where you want it to spray. down sides; wand leaks a little if some fluid is left in tank, even if set to lock, 2; poly wand warps if left in mild heat for a short period of time. over all well worth the money save your self the hassle of mixing one gallon at a time. (so far I've put 3 full tanks in it no problems besides what described)
    Report
  • Zena Tremlett
    5.0 out of 5 stars top quality
    Reviewed in the United Kingdom on October 20, 2013
    Verified Purchase
    very easily assembled well made sprayer would reccomend.being in the gardening trade i needed a robust quality sprayer which this is.
    Report
  • Don Samuelson
    5.0 out of 5 stars Good Overall Item
    Reviewed in the United States on March 25, 2019
    Verified Purchase
    Solid Product and sprays well. It is a little tippy when set on the floor and has some balance issues especially when empty. The handle doesn't have a real smooth feeling pumping action to it... its hard to tell sometimes if its working but it is. These are relatively minor issues and overall it carrys a lot of weight in product and sprays it out quickly or slowly depending on your preference.
    Report