ATV Sprayer Parts List & Diagram

Written by Shane Blomendahl in Lawn & Turf Last Updated 11/09/2025

An ATV sprayer is one of those tools you don’t realize you need until you’ve used one. Whether you’re maintaining a few acres, managing food plots, or keeping fence lines clean, it’s a must. I rely on mine year-round — but instead of buying an off-the-shelf model, I prefer to build my own. That way, I can choose the components I trust and make sure it’s built to last.

So, in this guide, I’m gonna break down my ATV sprayer parts list and how everything fits together. Think of it as your quick-reference map for both building and keeping your ATV sprayer running smoothly and spraying effectively all season long.

ATV Sprayer Diagram

Let’s start with the layout. In the diagram below, you can see a basic overview of how I put together my ATV sprayer. This setup is great because it is simple, but it can be easily modified or added to.

ATV Sprayer Parts List

This is the complete list of items I used to build the sprayer, and where you can find them. They are listed in order (mostly) from inside the tank to the pump, and then out to the spray gun/boom:

You’ll also need hose clamps for 1/2-inch and 3/8-inch ID hose, plus thread tape or pipe sealant.

Explaining Each Component

Pump: You want to ensure that you have an adequately sized pump. Too small and you won’t have enough flow to operate your boom. Too large, and you will waste money on flow you don’t need. When you know the nozzle size you are going to use, you can add up the total flow needed to supply them and add some cushion. For more details on how to size your pump, read this guide.

Also, be sure to use the correct size wire and fuse when connecting the pump to the battery. The pump’s manual should indicate this.

Tank: Not a lot to say about the tank. The biggest question you may have is what size to use. 15 or 25-gallon tanks are common, but there are a lot of different sizes available.

This guide breaks down how to determine the sprayer tank size you need and provides some insights on other features like tank shape and its effects on cleanout/draining.

Hose: I recommend a reinforced hose feeding the pump so it does not collapse from the pump’s suction. An EPDM rubber hose is the best option for your spray wand or boom hose.

Suction Strainer: A simple item, but it is important. Installed on the end of your hose inside the tank to block debris from entering the suction hose that feeds the pump. This component is inexpensive insurance against clogged tips, damaged pump internals, and maintenance headaches.

Regulating Valve: When you have a demand-style pump (especially on a small spot sprayer), you may run into issues with pump cycling or fluctuating pressure if the system isn’t regulated. The regulating valve (sometimes called a pressure-regulating or bypass valve) helps maintain stable operating pressure by diverting excess flow back to the tank.

For more details, be sure to read through my post explaining regulating valves and 12V pump cycling.

How It All Fits Together

Once you have all of these components, it’s time to assemble your sprayer. In addition to the diagram above, the image and video below show how the components fit together.

My top piece of advice would be to dry-fit everything together before you use your pipe sealant or tape. Ensure everything will fit, valves can turn, hoses aren’t kinked, etc. This also allows you to determine the installation priority of each item. By this, I mean: if I install this fitting here, can I still get the hose on? Or once I screw in the regulating valve, can I still screw the fitting onto the pump outlet?

Inside the Sprayer Tank

I recommend that the first thing you do is install your bulkhead fitting. Once you dry-fit everything and know where the bulkhead should be, cut your hole and install the fitting. You can see exactly how to do this in the video below.

Then install the suction hose with the stainer on the inside of the tank. You can cut your hose so that it easily reaches the bottom of the tank and won’t have too much slack, so that it won’t float. Install the barbs and strainer, then screw it into the bulkhead fitting inside the tank until the inlet/strainer rests on the bottom of the tank.

Then, run your suction hose on the outside of the tank, from the bulkhead fitting to the pump inlet. On the outlet of the pump is where I place the makeshift sprayer manifold. It is essentially just a pair of “T” fittings. The “T” provides a means to install a pressure-regulating valve. This allows you to control the operating pressure of your sprayer. It bypasses excess fluid back to the tank. This also provides some agitation.

The other “T” fitting has a valve in each outlet. This gives the option to direct flow to the spray gun or to a spray boom.

Step-by-Step ATV Sprayer Assembly Video

If the image still leaves you with any questions, you can refer to this video that shows step-by-step assembly.

Other Ways to Build an ATV Sprayer

Of course, this isn’t the only way you can put together an ATV sprayer. There are simple alterations you can make, like using a larger pump, adding a longer hose for your spray gun, extending the boom with or even using a boomless setup.

Using a bigger pump or adding more hose isn’t too complicated, but setting up your boom or boomless ATV sprayer is a little more involved. So let’s break down the parts last for building an ATV boomless sprayer.

Adding a Boom or Boomless Setup

The sprayer I laid out above is designed so you can easily add a boom to it and use it as both a spot and broadcast sprayer. I have a full guide to building a DIY boom. It will give you a detailed look at how I built my own boom and the key things to keep in mind.

Depending on how much liquid you want to apply, you may opt for a slightly larger pump than the one I listed above. The amount you apply, or “application rate”, is not just a matter of pump size, but rather, the application rate is determined by nozzle size, speed, pressure, and nozzle spacing.

I won’t go into the dirty details about how all of these factors affect one another, so if you want to learn more about controlling the amount you spray per acre, then be sure to read this guide on sprayer application rates and calibration.

Shane Blomendahl

I have more than a decade of experience using, building, studying, and testing sprayers in several applications. With the knowledge I have gained I want to provide straight forward and detailed answers for DIY homeowners, farmers, and commercial turf and tree care pros.

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