REALWORK 4 Gallon Backpack Sprayer, Translucent Tank for Pests, Weeds, and Garden Care

Description

If you want fewer refills and steadier coverage than a little hand sprayer can give, the REALWORK 4 gallon backpack sprayer steps up with a translucent HDPE tank you can see into, a manual high-efficiency pump, padded adjustable shoulder straps, and a pressure-relief valve for safe depressurizing between fills. That combination, plus a reinforced 59 inch hose and polymer wand with adjustable nozzles, makes it a practical everyday tool for weed control and perimeter pest treatments as well as watering and foliar feeding on shrubs and beds.

Key Customer Benefits

• Fewer refills, steadier coverage on real lawns. With a 4 gallon tank, the REALWORK 4 gallon backpack sprayer can cover roughly 4,000 square feet if you calibrate for about 1 gallon per 1,000 square feet, a common DIY target. Many labels ask for more carrier volume, for example 1.5 to 2 gallons per 1,000 square feet, which would put one tank at about 2,000 to 2,700 square feet. The big win is control, since you can calibrate for your walking speed and nozzle to match the label.
• Cleaner mixing and safer depressurizing. A wide 4.5 inch funnel opening makes filling and rinsing easier, and the translucent HDPE tank lets you see the liquid level as you work. When it is time to crack the lid, the built-in pressure relief valve helps you release pressure before opening the tank. That combination cuts down on splash and spill risk during refills.
• Versatile spray patterns for weeds, pests, and feeding. The kit includes multiple attachable nozzles, including a basic cone, a dual head, and a fan tip, plus a lock-on trigger for continuous spraying. Pick a wider fan for blanket herbicide passes, or a cone pattern for shrub and perimeter pest work. Choosing the right tip can also reduce drift, since modern drift-reducing flat-fan designs produce coarser droplets that stay on target better than standard tips.
• Comfort that helps you finish the job. Padded, adjustable shoulder straps spread the load so a full tank feels manageable, and the 59 inch hose with polymer wand lets you keep the tank on your back while reaching beds and fence lines. The empty unit weighs about 8 pounds, which keeps overall weight reasonable once filled.
• Built for common lawn and garden chemicals. The tank is high-density polyethylene and the pump assembly uses chemical-resistant seals, which is exactly what you want for typical herbicides, insecticides, and fertilizers used around the home landscape. This is a durable, serviceable format for a manual piston pump sprayer, with readily available parts like nozzles and strainers.
• Easy to monitor and store between uses. The semi-transparent tank and molded volume scale make it simple to check remaining mix at a glance, then rinse and store. Seeing the liquid level is not just convenient, it supports accurate application, since you can confirm your expected gallons per 1,000 square feet as you spray.

Product Description

What the REALWORK 4 gallon backpack sprayer is

REALWORK’s 4 gallon backpack sprayer is a manual, piston-style pump sprayer built around a translucent high-density polyethylene tank. The tank has a wide 4.5 inch funnel opening for clean fills and rinses, padded adjustable shoulder straps for comfort, a reinforced hose that is about 59 inches long, and a built-in pressure relief valve so you can release pressure before you crack the lid.

The empty unit weighs about 8 pounds and measures roughly 14.2 inches wide by 20 inches tall, which makes it easy to store on a shelf between uses. Included in the box are the adjustable spray nozzle, a strainer for the mouth, shoulder strap, and a replacement seal. All of these are confirmed in retailer spec sheets for the REALWORK 317004G and model 347004G.

How it works

You pressurize the tank by pumping the handle, the piston builds pressure in the chamber, and liquid travels through the internal pickup, the reinforced hose, and the shutoff toward the nozzle on the wand. That pressure gives you an even, metered spray pattern as you walk. The translucent tank makes it simple to see how much mix remains, and the pressure-relief valve lets you safely dump pressure at the end of a run so you can open the lid without a messy surprise. This is not just convenience, it is a safety step that reduces the chance of accidental discharge from a pressurized wand.

For best results, calibrate your walking speed and output once, then use that rhythm every time. University guides recommend timing a test strip, catching the output for that time, and equating it to area, which gives you a true gallons per 1,000 square feet number for your sprayer and stride.

Many turf labels are written with this format in mind, for example, “apply 1 gallon of spray per 1,000 square feet,” so a four gallon fill often lines up with about 4,000 square feet at light carrier volumes. When labels call for more carrier, for example 1.5 to 2 gallons per 1,000 square feet, that same tank will cover proportionally less area. The key is that calibration marries your nozzle, pressure, and pace to the label rate.

What makes it effective and different

A few design choices make this model easier to live with if you spray more than a couple times a season. The 4.5 inch mouth is genuinely helpful for measuring and rinsing, since you can see what you are doing and you are less likely to spill concentrate back down the tank neck. The translucent HDPE tank lets you verify level at a glance, which helps you keep applications consistent through a lawn or bed.

The long hose and padded straps allow you to keep the tank on your back while reaching across beds and along fence lines. The pressure-relief valve is a small part that solves a big problem, because opening a highly pressurized sprayer can be messy and hazardous, and the ability to vent pressure before opening the lid keeps the workflow clean.

Effectiveness also comes from matching the spray pattern to the job. Extension publications explain that drift-reducing flat-fan or pre-orifice tips produce larger droplets that are less prone to off-target movement.

Smaller droplets from conventional tips give better coverage on fine foliage but are more drift-prone in wind. In practice, you would use a coarser fan pattern for blanket weed control on turf, then switch to a cone or finer fan pattern for dense shrubs or tight perimeter pest work on foundation plants. The REALWORK’s adjustable nozzle covers common patterns, and you can pair that with moderate pressure for less drift when the forecast is breezy.

Finally, the piston pump format is easy to maintain and generates higher peak pressure than a diaphragm design, which helps when you want a finer spray for foliar feeding or a crisp fan for turf herbicides. Diaphragm units shine with abrasive wettable powders and bleach, but for typical homeowner mixes like soluble herbicides and general insecticides, a piston unit offers simple upkeep and a responsive pressure feel at the handle.

Product Specifications

Category	Specification
Brand / Line	REALWORK 4 gallon backpack sprayer. Current retail listings name model 347004G and 317004G for this configuration.
Tank capacity	4 gallons, about 15.1 liters
Tank material and color	High-density polyethylene, translucent white
Mouth opening	Approximately 4.5 inches wide
Hose length	59.05 inches
Dimensions	Depth 13.25 in, Height 19.75 in; Width commonly listed near 13 to 14.2 in
Empty weight	About 8 pounds
Pressure management	Built-in pressure-relief valve
Power / pump style	Hand-powered backpack sprayer, piston-style format
Wand and trigger	Lock-on trigger on the wand handle
Included spray tips	Varies by kit. The 307004G manual shows four tips: single conical, double conical, flat-fan, and 4-hole adjustable. Some 317004G retailer pages show one adjustable nozzle plus strainer and a spare seal.
Example nozzle flow ranges	Single conical about 0.184 to 0.224 gpm; Double conical about 0.343 to 0.423 gpm; Flat-fan about 0.132 to 0.158 gpm; 4-hole adjustable about 0.158 to 0.264 gpm
Safety notes from manufacturer	Wear protective clothing, gloves, eye protection, and a respirator. Release pressure before opening. Do not use flammable, caustic, or corrosive solutions. Keep out of windy conditions.
Regulatory warning	California Prop 65 notice included on product pages
Warranty and support	One-year limited warranty through J & J Global, with parts support via ezreplacement.com
Country of origin	China

 

How to Use and Set Up the REALWORK 4 Gallon Backpack Sprayer

1) Unbox, inspect, and assemble the sprayer the right way

Lay out the tank-and-pump assembly, the pump handle, the wand, both shoulder straps, and the included nozzles. Thread the wand into the shutoff handle by sliding the wand tube through the nut and O-ring until it bottoms, then tighten the nut. Slip the pump handle over the pump shaft at the angle you prefer. Clip each strap to the lower frame, then adjust the strap length and slide the pads where they sit comfortably on your shoulders.

Before your first fill, confirm the strainer basket is seated in the wide tank mouth and check the cap gasket. These small parts prevent debris from reaching the pump and help the sprayer hold pressure. The manual also lists the included tips and their purpose, such as single conical, double conical, flat fan, and a four-hole adjustable tip. Knowing what is in the box will save you a trip back to the store.

2) Suit up and prep your work area

Dress for the job. At minimum, wear chemical-resistant gloves, eye protection, long sleeves, long pants, and sturdy, closed-toe shoes. University and safety programs add that a face shield and a respirator may be needed if labels require them. Keep bystanders and pets away, and plan to spray when wind is calm to reduce drift.

Set up a mixing area on a flat surface with water, a dedicated measuring cup, and a catch bucket for rinsate. Read the product label from start to finish before you open anything. Labels are the law, and they govern rates, carrier volume, and PPE.

3) Calibrate once, then spray with confidence forever

Backpack sprayers deliver great results when output matches what the label expects. The simplest way to dial this in is the 1,000 square foot test. Mark off a 1,000 square foot area, walk it at your natural pace while spraying with your chosen nozzle and pressure, and time the pass. Then spray into a bucket for that same time and measure what came out. That is your gallons per 1,000 square feet.

Homeowners often like an indoor method to get close before field checks. Some lawn care communities describe a calculator-based approach to estimate output, which you can then confirm outdoors with the university method. Use forum tips as practical starting points, then finalize with an on-grass calibration.

4) Mix in the correct order so products dissolve and stay in suspension

Fill the REALWORK tank only after you have prepared a mix in a separate container, as the manual advises. When you do mix, use the standard orders that agronomy companies and extensions promote. Two common memory aids are WALES and APPLES. Both begin with clean water in the tank and agitation running.

Water soluble bags go in early and must fully dissolve. Wettable powders and water-dispersible granules go in before liquids. Emulsifiable concentrates and solutions are added later. Antifoam and adjuvants are added as directed on the label. Following one of these structured orders dramatically reduces clumping and compatibility problems.

The wide strainer basket in the tank mouth catches undissolved grit before it enters the pump. Keep it in place while filling and rinsing, then clean it separately when you are done.

5) Fill, pressurize, and get a consistent pattern

Pour your finished mix through the strainer and tighten the cap. Prime the pressure chamber by pumping slowly until you feel resistance, then continue pumping until resistance becomes firm. The manual explains that the handle is reversible and that occasional re-pumping during work keeps the spray fan uniform. If you ever need to open the lid mid-job, release pressure first using the sprayer’s pressure relief, then loosen the cap. This habit reduces splash risk.

6) Choose the right nozzle for the task

Nozzle choice controls droplet size, coverage, and drift. Drift-reducing flat-fan styles with a pre-orifice or turbo design create larger droplets that stay on target better in light wind. Conventional flat fans or cone patterns give finer coverage on dense foliage but are more prone to drift. Use coarser fans and moderate pressure for blanket turf herbicide passes, then switch to cone or finer fans for shrubs and perimeter pest work where foliage coverage matters.

7) Spray technique

Walk at a steady pace and keep your nozzle height consistent, just as you did during calibration. Overlap passes slightly to avoid striping. Start your spray a step before the turf or bed starts and keep the wand moving as you approach edges. Watch your fan and listen to the pump. If the fan narrows or spits, stop and add a few pumps to bring pressure back. A lock-on trigger lets you focus on pace and pattern rather than squeezing constantly.

Be mindful of weather. Wind pushes small droplets off target and heat can increase evaporation. If wind picks up, shift to a coarser tip and lower your pressure, or stop and resume later.

8) When you finish, depressurize, clean, and lubricate

Empty unused product according to the label. Depress the trigger with the tank open to purge the hose and wand into an approved area listed on the label. Rinse the tank with clean water and spray that rinse through the system. Repeat at least two more times. This is often described as a triple-rinse. Remove the nozzle, tip screen, and wand screen, and wash them separately. Allow parts to dry before storage. Periodically lubricate the pump seals and moving parts with petroleum jelly or waterproof grease, exactly as the REALWORK manual recommends. This quick touch keeps the piston moving smoothly and extends seal life.

9) Storage and cross-contamination prevention

Store the REALWORK 4 gallon backpack sprayer in a cool, dry area out of reach of children. If you use herbicides and insecticides in the same season, consider dedicating separate labeled tanks, wands, or at least nozzles to avoid cross-contamination that can injure ornamentals. After any herbicide that is known to linger, perform a more thorough cleanout and run a full rinse through the hose and nozzle.

10) Common Issues

If output surges or the fan looks ragged, check the tip and screens for debris first, then verify the tank strainer is seated. If pressure will not build, inspect the cap gasket and release valve, then lubricate the piston seals. The REALWORK manual includes a maintenance note on seal lubrication as a normal service item. If the shoulder straps creep during long jobs, re-adjust the buckles and pad position so the weight rides on your hips rather than your neck. Small fit changes make a big difference over a four gallon fill.

FAQs for the REALWORK 4 Gallon Backpack Sprayer

What chemicals can I run through this sprayer? Can I use bleach or cleaners?

REALWORK specifies this sprayer for agricultural mixes, and warns against flammable, caustic, or corrosive solutions. That means household bleach and many strong cleaners are not appropriate for this tank and its seals. It is compatible with lawn and garden products like fertilizers, insecticides, and herbicides, not corrosive cleaners. If you must spray bleach, look for a bleach-rated sprayer with specialized seals that are marketed for disinfectants.

How much area will one 4 gallon fill actually cover?

Coverage depends on your calibrated spray volume. University methods teach a simple 1,000 square foot test to find your true gallons per 1,000 square feet. Many turf programs run about 1 gallon per 1,000 square feet, which would put a 4 gallon fill at roughly 4,000 square feet. If your labels call for 1.5 to 2 gallons per 1,000 square feet, expect 2,000 to 2,700 square feet per tank. Calibrate with clean water first, then follow the label.

How heavy is it when full, and will the straps handle that weight?

The REALWORK unit weighs about 8 pounds empty. Four gallons of water weigh about 33 pounds, so you are carrying roughly 41 pounds before PPE and tools. A typical 4 gallon backpack weighs about 45 pounds full, since many models weigh closer to 12 pounds empty. The padded, adjustable straps on this model are designed to spread that load, which is why fit and strap adjustment are worth a minute before you start.

How do I calibrate a backpack sprayer so labels make sense at my pace?

Mark off 1,000 square feet, spray with your chosen tip and a comfortable pace, and time the pass. Then spray into a bucket for that same time and measure what came out. That number is your gallons per 1,000 square feet. This same method works perfectly with the REALWORK 4 gallon backpack sprayer.

Which nozzle should I use for weeds in turf versus shrubs or perimeter pests, and how do I reduce drift?

Flat-fan tips are the default for broadcast turf work because they lay down a uniform band. Drift-reducing designs, such as pre-orifice or turbo flat-fans, produce larger droplets at moderate pressures, which helps keep spray on target when wind is light. Cone patterns give finer coverage on dense foliage and spot work, but they are more drift-prone. The REALWORK manual lists the included tips plus flow ranges so you can match output to your calibration. Aim for moderate pressure and a consistent height.

Can I use the same sprayer for herbicides and then switch to fertilizers or insecticides?

You can, but only with meticulous cleanouts, and many experienced gardeners keep a separate, clearly labeled sprayer for herbicides to protect ornamentals and edibles. If you do share a tank, perform a full triple-rinse and clean screens and nozzles every time.

How do I clean this sprayer so residue does not hurt plants later?

Empty remaining mix according to the label, then triple-rinse. That means rinse the tank, spray the rinse through the hose and wand, and repeat at least two more times. Remove and wash the tip screen, wand screen, and strainer. Allow parts to dry before storage. The REALWORK manual adds a maintenance note to lubricate pump seals with petroleum jelly or waterproof grease.

Is it safe to leave diluted pesticide in the tank overnight?

Best practice is to mix only what you will use that day, then clean the sprayer. Never store pesticides in application equipment. Products can separate, lose efficacy, or foul screens if left overnight.

The pump will not build pressure, or the wand is sputtering. What should I check first?

Check for debris in the tip and screens, make sure the strainer is seated, and confirm the cap gasket is in place. If the sprayer sat a while, lubricate the piston seals and moving parts. The REALWORK manual calls lubrication a normal service item, and it also shows how the wand seals and nut should be assembled to prevent air leaks.

Does this model have a pressure-relief valve, and how do I use it safely?

Yes. This 4 gallon REALWORK has a built-in pressure-relief that lets you vent the tank before opening the cap, which helps prevent splash and mess during refills or cleanup. Safe practice is to release pressure before loosening the cap every single time.

I am left-handed. Can I swap the pump handle to the other side?

You can. The pump handle installs on either side and can be indexed to the angle you prefer.

What is the warranty, and where do I get parts?

The printed REALWORK manual states a one-year limited warranty through J & J Global. Retailers may have shorter return windows, which are store policies rather than the manufacturer warranty. For parts and support, the brand directs users to ezreplacement dot com or the contact email in the manual. Save your proof of purchase.

Can I use this sprayer around edible plants if I follow labels?

The sprayer is just a delivery tool. Safety hinges on the product label. Labels are legal documents that control where a pesticide can be used, including whether a product is allowed on edible crops and what harvest intervals apply. Always check the label and follow it exactly.

Conclusion

The REALWORK 4 gallon backpack sprayer is the kind of simple, durable tool that lets homeowners do professional-quality work with the right technique. Calibrate your output per 1,000 square feet once, keep your walking pace and nozzle height consistent, and labels suddenly translate into clean, even results across turf and beds. University guides lay out the exact steps, from timing a 20 by 50 foot test area to measuring your captured output with clean water, so you can dial in gallons per 1,000 square feet with confidence.

Your nozzle and pressure choices matter. Drift-reducing flat-fan styles create larger droplets that are less likely to move off target in light wind, while finer droplets improve coverage in dense foliage. Knowing when to swap tips and run moderate pressures keeps product where it belongs, on the target. Extension publications summarize these tradeoffs clearly and are worth reviewing before your first application.

Just as important, treat every application like a safety task. The pesticide label is a legal document that governs where and how you spray, and what protective equipment you must wear. Build your routine around the label and a basic PPE stack, such as gloves and eye protection, then add a respirator or face shield if the label requires it. When the job is done, clean the sprayer thoroughly so today’s mix does not surprise you tomorrow. A triple-rinse, including spraying rinse water through the hose and tip, plus a quick cleaning of screens and nozzles, prevents residue carryover and keeps output consistent for the next task.