15L Adjustable‑Flow Backpack Battery Sprayer

Professional Knapsack Spraying Solution for Agriculture, Horticulture & Sanitation

Interested in bulk orders, private‑label customization or regional distribution partnerships? Reach out to our sales team to receive your tailored quote.

Product Brief

Field‑level spraying work puts high demands on your sprayer: long runtime, reliable spray quality, minimal downtime and easy maintenance. The 15L auto‑flush adjustable‑flow backpack battery sprayer is purpose‑built to solve real‑world pain points faced by farmers, greenhouse operators, landscape teams and sanitation contractors.

Built around a heavy‑duty diaphragm pump, this backpack sprayer accepts widely‑used 18V DeWalt slide‑in batteries from your existing power‑tool inventory. Merging patent‑protected auto‑flush function, stepless flow tuning and intelligent constant‑pressure control, this unit delivers consistent spray performance while drastically cutting the time spent cleaning and servicing equipment. It is equally well‑suited for on‑farm end‑users and global trade partners sourcing quality agricultural hardware.

Capable of handling herbicides, insecticides, fungicides, foliar fertilisers and disinfectants, this all‑in‑one sprayer covers crop protection, plant nourishment and large‑scale disinfection assignments.

Technical Specifications

What Sets This Backpack Sprayer Apart From Competitor Models

Most standard battery backpack sprayers come with fixed output settings. Once you finish spraying, you need to take apart hoses and pump components for manual cleaning. Chemical residues from wettable powders and liquid fertilisers harden inside internal channels, gradually causing blockages, reduced performance and shortened equipment lifespan.

This upgraded model addresses those pain points on two key fronts. First, output flow can be freely adjusted on demand to suit different crops and treatment objectives. Second, the integrated auto‑flush cycle cleans internal pathways with the press of one button, removing chemical residue before it dries and builds up. Operators save significant labour that would otherwise go toward disassembling and scrubbing sprayer parts.

Highlighted Product Capabilities

Reuse Existing DeWalt 18V Power‑Tool Batteries

There is no need to invest in proprietary batteries or separate dedicated chargers. If your site already uses DeWalt drills, saws and other cordless gear, simply fit your existing 18V slide‑pack battery onto this sprayer and get straight to work.

Equipped with a 5.2Ah battery pack, the sprayer can run continuously for approximately 5 hours — enough to cover multiple hectares. By swapping spare batteries, teams can maintain non‑stop operation across full‑day spraying schedules. An integrated over‑discharge protection circuit safeguards both the sprayer pump and your DeWalt batteries, slowing battery degradation — a feature rarely implemented by competing manufacturers.

Patented Auto‑Flush System Prevents Internal Clogging

A large percentage of sprayer failures stem from dried chemical deposits within pumps and tubing. Wettable powders and concentrated fertilisers leave stubborn residue if not fully flushed post‑operation, and manual disassembly cleaning is labour‑intensive and messy.

Our proprietary one‑touch auto‑flush cycle automatically rinses the whole fluid circuit, clearing residual chemicals before they solidify. Feedback gathered from global agricultural operators indicates up to 70% reduction in maintenance hours. The diaphragm pump achieves 1000 working‑hour rated life expectancy — roughly three times the service life of comparable sprayers within the same market segment.

Stepless Flow Regulation for Target‑Oriented Spraying

Various plant species and treatment jobs require different liquid delivery volumes. Rather than frequently swapping nozzles, turn the adjustment knob for seamless flow modulation:

Low‑output fine mist: Delicate atomisation for young, sensitive seedlings to avoid leaf burn and plant injury

High‑volume output mode: Boost liquid delivery for large‑area orchard applications to raise overall job efficiency

Precise flow modulation helps minimise agrochemical waste while maximising the effectiveness of pesticide and fertiliser applications.

Intelligent Constant‑Pressure Control Delivers Uniform Atomisation

Many battery‑powered sprayers experience noticeable pressure drop as battery charge decreases, creating uneven droplet sizes and patchy spray coverage. Our smart control hardware holds pressure stable from the very first tank through to the final tank of liquid.

Stable atomisation regardless of remaining battery capacity

Reduced pressure fluctuation during long continuous shifts

Even chemical distribution over leaves and branches

Improved results for pest suppression and foliar feeding

Reinforced 15L Chemical‑Resistant Tank Design

Manufactured from high‑strength modified polypropylene material, the 15‑litre tank balances generous working capacity with wearable backpack comfort. The material offers excellent resistance against most agricultural chemicals and withstands impact and rough handling in outdoor working environments.

*Fewer interruptions from repeated refills

*Resists corrosion by fertilisers, herbicides and disinfectants

*Impact‑resistant construction for harsh field‑site conditions

*Visible liquid level indicator for quick volume checks

Commercial‑Grade Diaphragm Pump Unit

Engineered for non‑stop professional‑grade workloads, the diaphragm pump provides dependable pressure output and impressive spray reach.

*Working pressure range: 1.3‑6.5 bar

*Adjustable liquid flow rate: 1.4‑3.7 L/min

*Effective maximum spray distance: over 8 metres

*Rated pump service life: up to 1000 working hours

Ergonomic Carrying Harness for Extended Wear

Thick padded back padding plus multi‑position adjustable shoulder straps distribute weight evenly across shoulders and torso, easing physical strain during hours‑long continuous spraying. This human‑oriented design greatly improves comfort for operators working full days in the field.Application RangeThis versatile backpack sprayer fits a wide array of commercial‑grade assignments: fruit orchards, grape vineyards, open‑air vegetable plantations, greenhouse growing facilities, plant nurseries, municipal landscape maintenance, disinfection work on livestock farms, public sanitation projects, professional pest‑control services and commercial premise sanitisation.

Why Choose Crosstec as Your Sprayer Supplier

Crosstec has specialised in R&D and manufacturing of lithium‑driven sprayers since 2017, at a time when most competitors still relied on lead‑acid battery solutions. By continuously collecting real‑world feedback from end‑users, our engineering team has built deep understanding of equipment failure modes, durability bottlenecks and actual on‑site requirements for professional‑grade spray equipment.

Our product portfolio supplies distributors and OEM clients in more than 50 countries globally. Our sprayers are deployed in French vineyards, Brazilian citrus groves, vegetable farms across Southeast Asia and municipal sanitation projects throughout the Middle East. We possess rich practical know‑how adapting equipment for diverse local water quality, agrochemical formulations and regional operator habits.

Constant‑pressure spraying technology represents one of our flagship patents. Unlike competing products whose pressure drops as power fades, our system maintains steady performance from full charge down to low‑power conditions.

Every finished unit undergoes full functional testing, not merely random sampling. Even though complete inspection extends production cycles, it drastically reduces dead‑on‑arrival product issues for our distribution partners. If you are seeking a reliable manufacturer for bulk purchasing or custom branding projects, please connect with our sales department.

FAQ Section

Q1: What performance advantages does the auto‑flush system bring compared with ordinary sprayers?

A1: The proprietary self‑rinsing mechanism clears internal chemical residues and debris. It cuts down routine maintenance efforts and significantly lowers pump clogging risks caused by dried‑up agrochemical deposits.

Q2: Can this sprayer work with DeWalt‑brand batteries?

A2: Yes, compatible with 18V slide‑style DeWalt battery packs. The 5.2Ah battery is recommended for approximately 5‑hour continuous runtime; other matching DeWalt battery versions will also function normally. If you are unsure of compatibility, send photos of your battery to our sales team for pre‑order confirmation.

Q3: Is spray volume adjustable during actual operation?

A3: Yes. Rotate the control knob to achieve stepless flow adjustment. You can generate fine mist suitable for fragile seedlings or increase output for heavy‑duty orchard spraying. Most field tasks do not require nozzle replacement.

Q4: What liquid chemicals are safe to use inside the spray tank?

A4: It supports widely‑used agricultural liquids including fertilisers, herbicides, insecticides and various disinfectants. Always observe the chemical manufacturer’s mixing guidelines and safety precautions.

Q5: What is the maximum achievable spraying range?

A5: Under suitable operating conditions and matched nozzle assembly, effective spraying distance can go beyond 8 metres.

Q6: Do you support bulk purchasing and OEM private‑label customisation?

A6: Yes. We have delivered many OEM and private‑label projects for international partners across over 50 countries. We can implement your custom branding artwork and adjust technical parameters such as tank capacity and pressure range to satisfy local‑market demands. Please share your project requirements so we can develop a customised solution.