Chapin 61800 Backpack Sprayer
Chapin 61800 in field, spraying corn
Chapin 61800 backpack sprayer in tank filter
Chapin 61800 spraying weeds around a barn
Chapin 61800 Backpack Sprayer
Chapin 61800 in field, spraying corn
Chapin 61800 backpack sprayer in tank filter
Chapin 61800 spraying weeds around a barn

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

61800

4 gallon durable, chemical-resistant poly tank

3 filters system: shut-off, inside the tank, filter basket

3 spray nozzles included: brass and poly adjustable nozzles, fan tip

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Details and features

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. The positional pump handle can be switched for left-or-right-hand use. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

Multiple nozzles are included: adjustable brass, adjustable poly, and poly fan tip, and all can be switched out depending on the chemical application. Its 4-gallon, polyethylene tank is chemical-and rust-resistant. The backpack comes with Chapin’s standard 3-stage filtration system: one filter inside the tank, one filter basket under the tank cap, and one at the shut-off. All are removable so they can be cleaned. Backed by Chapin’s 2-year limited warranty and made in the USA with global materials.

Applications

Landscape & Professional Lawncare

4 gallon durable, chemical-resistant poly tank

5.25” opening with filter cap to help catch debris when filling tank

3-stage standard filtration system: one filter is located in the shut-off, one inside the tank, and the basket with the tank cap; 3 different locations to catch debris before it clogs up your sprayer while working

Adjustable padded shoulder straps, 20-inch poly extension wand and 48-inch reinforced hose, poly, cushioned grip, shut-off with lock-on feature

Three spray nozzles included: dial your spray from coarse stream to shower with either the brass or poly nozzles, spray a fan with the poly fan tip spray nozzle

Chemical-resistant elastomer seals handle professional fertilizers, pest and weed control products or general cleaning solutions

Made in the USA with global materials and backed by US-based customer service and technical support

Backed by Chapin’s 2-year limited warranty

Related Parts

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. The positional pump handle can be switched for left-or-right-hand use. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

Multiple nozzles are included: adjustable brass, adjustable poly, and poly fan tip, and all can be switched out depending on the chemical application. Its 4-gallon, polyethylene tank is chemical-and rust-resistant. The backpack comes with Chapin’s standard 3-stage filtration system: one filter inside the tank, one filter basket under the tank cap, and one at the shut-off. All are removable so they can be cleaned. Backed by Chapin’s 2-year limited warranty and made in the USA with global materials.

Replacement Parts Available for the 61800:

Pump Assembly 6-8178 and 6-8179
Hose Assembly 6-8105
Nozzle Assembly 6-8148
Carrying Straps 6-8137
Wand Clips 6-8152
Filter Replacement 6-8169
Worm Gear Clamp 6-8300
Repair Kit 6-8180, 6-8153
Dust Cover 6-8220

Please check your local retailer, or call our Order Team (1-800-444-3140), to check availability and purchase.

Chapin 6-8096 Flat Fan Poly Spray Nozzle

Chapin 6-8096 Flat Fan Poly Spray Nozzle

Fan spray nozzles deliver a consistent spray. Chapin's 6-8096 is a poly fan spray nozzle.
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Chapin 6-8122 Brass Adjustable Cone Nozzle

Chapin 6-8122 Brass Adjustable Cone Nozzle

Switch from stream to cone shower by easily twisting the 6-8122 brass spray nozzle based...
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Chapin 6-8093 Plastic Adjustable Spray Nozzle

Chapin 6-8093 Plastic Adjustable Spray Nozzle

Easily replace your sprayer nozzle and keep one on hand when it's needed. Chapin's 6-8093...
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Chapin 6-8131 Complete Elbow Nozzle Assembly with Fan and Adjustable Cone Nozzles

Chapin 6-8131 Complete Elbow Nozzle Assembly with Fan and Adjustable Cone Nozzles

Chapin’s 6-8131 includes 3 nozzles and the elbow attachment. Adjustable brass cone, adjustable poly cone,...
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Chapin 6-8138 Comfort-Grip Shut-Off Assembly

Chapin 6-8138 Comfort-Grip Shut-Off Assembly

Chapin’s 6-8138 comfort-grip shut-off assembly with lock-on feature gives you fatigue-free spraying.
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Chapin 6-8146-2 5.25 Inch Filter Basket with Cap Assembly

Chapin 6-8146-2 5.25 Inch Filter Basket with Cap Assembly

Chapin's 6-8146-2 5.25 inch cap comes with the filter basket, seal, and cap as a...
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Chapin 6-8219 20 Inch Poly Spray Wand

Chapin 6-8219 20 Inch Poly Spray Wand

Chapin's 6-8219 20-inch poly wand fits many Chapin backpacks, GP, and tank sprayers.
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Chapin 6-8120B Shut-Off Repair Kit

Chapin 6-8120B Shut-Off Repair Kit for Chapin Comfort-Grip Shut-Off Handles

No need to purchase a new comfort-grip shut-off handle when you can simply repair it....
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Specification

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. The positional pump handle can be switched for left-or-right-hand use. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

Multiple nozzles are included: adjustable brass, adjustable poly, and poly fan tip, and all can be switched out depending on the chemical application. Its 4-gallon, polyethylene tank is chemical-and rust-resistant. The backpack comes with Chapin’s standard 3-stage filtration system: one filter inside the tank, one filter basket under the tank cap, and one at the shut-off. All are removable so they can be cleaned. Backed by Chapin’s 2-year limited warranty and made in the USA with global materials.

Model Number 61800
Product Category Backpack Sprayers
Applications Landscape & Professional Lawncare
Warranty 2 year limited
Country of Origin United States
Dimensions (LxWxH) 15x8.75x22
Weight 10.5 pounds
Assembly Required Yes
Tank Size 4 gallons
Tank Material Poly
Pump Type Piston
Seals Chemical-resistant
Nozzle Material Brass, Poly
Nozzle Patterns Adjustable Brass, Poly Cone, Poly Fan
Nozzle Included Yes
Number of Nozzles 3
Filter 3: In-tank, Shut-off, Filter Basket
Filter Cap Size 5.25 inches
Lock-on Feature Yes
Shut-off Material Poly, Cushioned Grip
Hose Length 48 inches
Hose Material Reinforced PVC
Wand Length 20 inches
Wand Material Poly
Operating Pressure 40-60 PSI
Sprayer Rate 0.4-0.5 GPM
Handle Right or Left Mount
Handle Material Powder Coated Steel
Downloads

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. The positional pump handle can be switched for left-or-right-hand use. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

Multiple nozzles are included: adjustable brass, adjustable poly, and poly fan tip, and all can be switched out depending on the chemical application. Its 4-gallon, polyethylene tank is chemical-and rust-resistant. The backpack comes with Chapin’s standard 3-stage filtration system: one filter inside the tank, one filter basket under the tank cap, and one at the shut-off. All are removable so they can be cleaned. Backed by Chapin’s 2-year limited warranty and made in the USA with global materials.

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer Product Manual

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Safety & Usage for

Chapin 61800 4 Gallon ProSeries™ Professional Landscape Backpack Sprayer

The Chapin 61800 4-gallon professional backpack sprayer is designed for landscape applications. The positional pump handle can be switched for left-or-right-hand use. It features chemical-resistant seals for harsher weed killers, pesticides, and fertilizers.

Multiple nozzles are included: adjustable brass, adjustable poly, and poly fan tip, and all can be switched out depending on the chemical application. Its 4-gallon, polyethylene tank is chemical-and rust-resistant. The backpack comes with Chapin’s standard 3-stage filtration system: one filter inside the tank, one filter basket under the tank cap, and one at the shut-off. All are removable so they can be cleaned. Backed by Chapin’s 2-year limited warranty and made in the USA with global materials.

  • Spray distance is dependent on many factors such as adjusted nozzle orifice size, tank pressure, wind interference and angle of inclination. Spray distances may vary based on user’s specific application.
  • Multiple chemicals in one sprayer can cause cross contamination, even if you clean your sprayer after each use.
  • Do not store chemicals in your sprayer when not in use.
  • Always wear eye protection. Do not spray during windy conditions. Clean sprayer thoroughly after each use. Before using read and understand chemical manufacturer’s instructions and warnings as well as those above. FAILURE TO HEED ALL SAFETY WARNINGS AND INSTRUCTIONS COULD RESULT IN SERIOUS BODILY INJURY OR PROPERTY DAMAGE.

Where to buy Chapin Products

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Need Help?

Frequently Asked Questions

Our technical team can help! Give them a call at 1-800-444-3140, option 1, or email them at [email protected].

Our order team can help! Give them a call at 1-800-444-3140.

Chapin has 4 levels of warranties on our products: 1 year, 2 years, 5 years, and limited lifetime warranties. Parts and certain accessories do not have warranties. Check our Warranty page for an explanation of each warranty level. Your warranty will be listed on your packaging and/or product manual. Please register your product after purchase to access your warranty.

Your product manual will have all replacement parts listed for your sprayer. Some manuals include multiple sprayer models, so your particular sprayer may not include all the parts pictured in the manual. If you have additional questions on parts, please call Technical Support at 1-800-444-3140, option 1.

Chapin sprayers and spreaders are manufactured in the United States. A percentage of our internal components do come from outside the United States.

The majority of our watering products are not made in the United States. Our watering can is made 100% in the United States with recycled materials.

Only our battery-operated products include an SDS. This is specifically for the battery included with the unit. Chemicals are not included with any sprayer, sprayer, or watering product. Always review the SDS that comes with whatever chemical or solution you’re spraying or spreading and consult with technical team if you have any questions. 1-800-444-3140, option 1.

You can purchase Chapin products directly from any of the retailers located on our website, www.chapinmfg.com. Always check with your local retailer for availability. If you’re outside of the United States and are unsure, please call our order team at 1-800-444-3140.