Search  for anything...
SOLO

SOLO 475-B BACKPACK SPRAYER, 4 GALLON, DIAPHRAGM - BLEACH RESISTANT

  • Based on 376 reviews
Condition: New
Checking for the best price...
$119.44 Why this price?
Save $130.55 was $249.99

Buy Now, Pay Later

As low as $19.91 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Hearthshire
Arrives Friday, Jun 19
Order within 3 hours and 18 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Top Quality Material
  • Easily and effectively handles disinfectants, bleach solutions, fertilizers, herbicides, pesticides and formulations for tree, shrub and plant protection.
  • High-performance diaphragm pump for use with wettable powders, liquid and bleach solutions. Passes small abrasive particles without damage to the pump assembly. Produces pressure of up to 60 psi.
  • Diaphragm is made of top quality Tivilon material to provide outstanding resistance to harsh chemicals.
  • Interchangeable pump handle for left or right-hand operation and 48 nylon-reinforced high-pressure hose for extended reach.
  • Four-nozzle assortment for multiple spraying tasks: adjustable, fan spray, hollow cone, and jet stream nozzles. TeeJet compatible.

Description

The 4 Gallon Backpack Sprayer is capable of producing up to 60 psi, with a high-performance connecting rod-actuated diaphragm pump system. The diaphragm is made of top quality material for its resistance to harsh chemicals, including bleach and for its long life expectancy. For spraying large jobs or small it is capable of performing virtually every spray ring task and will easily and effectively handle disinfectants, fungicides, herbicides, insecticides and fertilizers. The 475-B is designed with the ability to pass small abrasive particles without damage to the pump system and may be used with water from wells, lakes or rivers, which may contain sediment. The diaphragm backpack is ideal for handling chemicals in wettable powder form, liquid formulations and bleach solutions.

Brand: SOLO


Tank Volume: 4 Gallons


Color: White


Material: Acrylic


Item Weight: 10 Pounds


Brand Name: SOLO


Included Components: SPRAYER BACKPACK 4GAL


Model Name: 32118


Model Number: 32118


UPC: 720343475302


Global Trade Identification Number: 02


Manufacturer Part Number: 32118


Item Type Name: Special Occasion Dress


Manufacturer: Solo, Inc.


Unit Count: 1.0 Count


Tank Volume: 4 Gallons


Item Weight: 10 Pounds


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


Hose Length: 48 Inches


Color: White


Style Name: Adjustable


Power Source: Hand Powered


Maximum Pressure: 60 Pound per Square Inch


Material Type: Acrylic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jun 19

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Pump and spray !!!
Pump sprayer is very well made . Easy to use and assemble . Spray is very consistent and works extremely well . I highly recommend
Reviewed in the United States on August 13, 2025 by Oley Humphrey
    • Very good sprayer, but a few suggestions.
I’ve had a solo sprayer for years & recently purchased another for church property use. I find them to be well built and dependable. I offer a couple of suggestions however. First, there are no instructions included, although it’s fairly easy to assemble, it wouldn’t hurt to include a little one page instruction sheet. Two, it’s difficult to see the gallon indicator on the tank, as it is the same opaque color as the tank. Having the gallon indicator marked in black would offer a contrast, making it much easier to hit your tank fill mark. I colored mine with a sharpie. ... show more
Reviewed in the United States on June 5, 2024 by Keivin Laine Smith
    • The weight
They kept the weight of the sprayer down, so when you’re packing three or four gallons of spray it’s still a tolerable weight. The sprayer arrived in good condition, added the spraying solution and went right to work. The he sprayer works great.
Reviewed in the United States on April 26, 2024 by Rooster Potter
    • Works
Works good, the hand pump is not bad but not great Make sure to clean it out before winter or gunk will build up when you pull it out in the spring. Wish it was easier to disassemble to clean up
Reviewed in the United States on April 26, 2026 by ChroMag
    • The best sprayer I've ever used
After starting, decades ago, with a metal 2-gallon pump sprayer, I bought a Solo piston sprayer and loved it. Unfortunately the piston system wears and begins to lose functionality, so I bought the diaphragm model and love it. It has given me many years of dependable service. However, I'm getting older and the straps became uncomfortable on my shoulders so I bought a replacement "harness" with better shoulder padding and cross straps to align the shoulder straps. Problems solved and at age 72 I'm still going strong with it. ... show more
Reviewed in the United States on July 18, 2021 by R. Adams
    • Easy and comfortable to use. Good materials, good construction.
Easy to use, well built, good materials. This beats little squeeze bottles all hollow. You work the the lever a few times (very easy, no strain, comfortable) and the unit sprays for a long time. Really, it is effortless and you can cover a large area fast. There is no leaking whatsoever. They could have made the various tips for the nozzle easier to put on and off; you have to disassemble the tip a bit and a simple screw on/off would have been far better. That said, I think there is only one nozzle you will ever need, the one that sprays a flat fan shape. Don't know why, for example, anyone would want to spray a _stream_ of weedkiller. I fill the thing with it sitting on a table so that I can slip into the straps easily and walk away with it instead of bending down to get into it. For what it's worth I bought a knockoff of Roundup from Amazon and it gives excellent results. That would be Compare-N-Save Concentrate Grass and Weed Killer. The products are virtually the same chemically. ... show more
Reviewed in the United States on February 7, 2016 by A reader
    • Comes With No Carry Handle & No Owner Manual
I use a backpack sprayer for applying herbicide on the grass fields both on the acreage where I live and at my investment real estate properties. This is an often used tool for me in the dryer times of the year. As is often the case, I lug the sprayer, filled with four gallons of liquid (or less) by hand in and out of my vehicle or short distances to a suitable (raised) place where I can place my arms through the straps and secure it to my body for operation. To my surprise, this unit has no "carry handle" for this purpose. To that end, how is one expected to grasp this thing and move it any distance in order to get it onto one's back? A sprayer filled with four gallons, or even a fraction of that amount, can be heavy and/or cumbersome to move while keeping it upright, without a handle. I currently own a comparable Chapin model that I need to replace. The Chapin has a plastic carry handle built into the unit. I assumed the Solo unit would have one, too. In addition, if you're looking for an owner manual in the box, forget it! They don't supply one, but leave it up to the buyer to download it instead. JUST CURIOUS SOLO, HOW HARD WOULD IT BE TO INCORPORATE A CARRY HANDLE INTO THE TOP OF THIS SPRAYER HOUSING, AND WHY NOT INCLUDE AN INSTRUCTION MANUAL PAMPLET INSIDE THE BOX? I haven't used this tool yet and I plan to send it back since I know the lack of a carry handle will be a game changer for me. ... show more
Reviewed in the United States on April 15, 2024 by HighInTheNW
    • Money well spent
I'm very pleased with the sprayer, was well worth it. Spend a little more and get what you pay for. I went with the diaphragm model as it will handle more cuastic types of liquids (bleach, etc). It works great and is well made.
Reviewed in the United States on December 2, 2020 by JW

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...