Berthoud Vermorel 1800 16 Litre Knapsack Sprayer

A Third of the Pumping. All of the Performance.

Most professional knapsack sprayers require between 30 and 40 pump strokes per minute to maintain working pressure. The Berthoud Vermorel 1800 requires just 8 to 10. That single fact is the reason professional operators across the UK choose it over conventional knapsacks. Furthermore, less pumping means less arm fatigue, more consistent pressure at the nozzle, and more attention on the job rather than the effort of maintaining it. Over a full working day, the difference is not marginal. It is transformative.

The Vermorel 1800 achieves this through a high-performance diaphragm pump with a curved piston, a design that generates and holds pressure far more efficiently than a standard straight-piston pump. As a result, operators conserve energy, maintain more consistent spray quality, and arrive at the end of the day in considerably better condition than they would with a conventional sprayer.

Then There Is the Comfort

A Frame Built Around Your Back

The second reason professionals choose the Vermorel 1800 is its ergonomic back frame. Rather than a flat harness panel pressed against the spine, the frame is shaped to follow the natural curve of the operator’s back. Consequently, the sprayer sits flush against the body and distributes its weight evenly across the back and shoulders. In addition, the adjustable padded double shoulder straps allow the fit to be tailored to each individual operator. Together, the pump efficiency and the ergonomic frame make the Vermorel 1800 the most fatigue-conscious 16-litre knapsack in its class.

Key Features and Benefits

Up to 5 Bar Maximum Pressure

The Vermorel 1800 builds pressure to a maximum of 5 bar, notably higher than the 3 bar ceiling of many competing knapsacks. Moreover, a pressure regulator is included as standard, allowing operators to set and maintain the correct working pressure for each application. This precision matters particularly in professional pesticide use, where accurate and consistent application rates are a regulatory requirement. Accordingly, operators can treat with confidence, knowing that output remains consistent from the first litre to the last.

Viton Seals Throughout

Chemical Resistance You Can Rely On

All seals within the Vermorel 1800 are manufactured from Viton, one of the most chemically resistant elastomers available. Viton seals maintain their integrity when exposed to the aggressive formulations found in many professional herbicides, fungicides, and insecticides. Furthermore, Viton seals are highly durable under repeated use, meaning the pump maintains its performance and leak-free operation over a long working life. This is a genuine differentiator from cheaper knapsacks that use standard rubber seals, which can degrade rapidly when exposed to professional-grade agrochemicals.

Accepts All Standard Nozzles

Unlike some proprietary-fit sprayers, the Vermorel 1800 accepts all standard-sized nozzles regardless of spray pattern. This gives operators complete flexibility to choose the most appropriate nozzle for each application, whether that is a flat fan, hollow cone, deflector, or adjustable type. Consequently, there is no need to invest in a separate set of fittings or adaptors.

Reversible Left or Right-Hand Pump Lever

The pump lever is fully reversible for left or right-hand operation and features two positions: a vertical storage position and an inclined operating position. As a result, the sprayer adapts quickly to any operator without requiring tools or adjustment parts.

16-Litre Tank with Visible Liquid Level

The 16-litre tank provides a practical working capacity for most amenity spraying tasks. It is also translucent, with a visible liquid level indicator that allows operators to monitor remaining liquid at a glance without stopping to remove the lid. This keeps the spraying process efficient and uninterrupted throughout the working day.

60cm Composite Lance

The Vermorel 1800 is supplied with a 60cm composite lance offering high mechanical and chemical resistance. The composite construction provides the rigidity needed for accurate nozzle placement while remaining lighter than an equivalent metal lance. Additionally, the lance is compatible with the full range of Berthoud accessories, including extended telescopic lance tubes, boom kits, and spray shields.

Five-Year Guarantee

Berthoud backs the Vermorel 1800 with a five-year guarantee. For professional buyers, this level of warranty cover provides meaningful reassurance that the sprayer will perform reliably throughout its intended working life.

Full Specifications

What’s in the Box

• Berthoud Vermorel 1800 16L knapsack sprayer
• 60cm composite lance
• Adjustable hollow cone nozzle
• Pressure regulator

Accessories and Compatibility

The Vermorel 1800 is compatible with the full range of Berthoud knapsack accessories. These include:

• Extended telescopic lance tubes for additional reach when treating taller vegetation
• Multi-nozzle boom kits for wider application widths
• Spray shields for targeted spot treatment and reduced drift
• A wide range of nozzle types including flat fan, evenspray, deflector, and hollow cone options
• Replacement Viton seals and service kits

Ideal Applications

The Vermorel 1800 suits any professional or domestic operator who values pump efficiency and operator comfort above all else. In particular, it excels in the following situations:

• Amenity weed control on paths, car parks, and hard surfaces
• Herbicide application in landscape and planting contracts
• Fungicide and insecticide treatment on ornamental planting and shrubs
• Grounds maintenance on sports pitches, parks, and golf courses
• Estate and garden management on larger properties
• Any situation where operators are spraying for extended periods and fatigue is a genuine operational concern

A Note on Professional Pesticide Use

Anyone applying pesticides in a professional or commercial capacity in the UK must hold a PA1/PA6 certificate of competence or an equivalent qualification. Accordingly, the Berthoud Vermorel 1800 is manufactured in compliance with European safety standards for professional spraying equipment. Regular calibration and maintenance will therefore ensure accurate and compliant application throughout the sprayer’s working life.

Over 130 Years of Spraying Expertise. Built Into Every Component.

Berthoud has been manufacturing professional spraying equipment since 1895. That depth of experience shows clearly in the Vermorel 1800. Every element, from the curved piston pump to the ergonomic back frame and Viton seals, reflects a thorough understanding of what professional operators actually need. Like all Berthoud products, the Vermorel 1800 is produced in the EXEL Industries factory in France to exacting European standards, and spare parts are available for all machines. Ultimately, if you are looking for a 16-litre knapsack sprayer that reduces fatigue, maintains accurate pressure with minimal effort, and handles the most demanding professional chemicals without compromise, the Vermorel 1800 is the answer.

Want to compare the Vermorel 1800 with the Berthoud Cosmos 18 Pro? Contact the Phoenix Amenity Supplies team. We are specialists in professional amenity spraying equipment and happy to help you choose the right sprayer for your operation.