A manual knapsack sprayer is a human-powered, backpack-mounted device used to apply liquids like pesticides, herbicides, and fertilizers evenly across crops and gardens.

Key Features and Specifications

• Tank Capacity: Typically holds 16 litres of liquid, though 20-litre models are also available.
• Material: Built using chemical-resistant HDPE (High-Density Polyethylene) or polypropylene for a lightweight yet durable body.
• Operation: Uses a hand-operated lever or pump handle connected to an internal pressure chamber (plastic or brass) that builds pressure manually.
• Weight: Weighs around 3 kg when empty.
• Nozzles: Comes with interchangeable nozzles (such as single, double, or flat-fan) to adjust the spray pattern.
• Comfort: Features an ergonomic backpack design with adjustable, padded shoulder straps to reduce user fatigue.

Common Uses

• Spraying insecticides, fungicides, and pesticides on field crops.
• Applying liquid fertilizers and weed killers in gardens or nurseries.
• General outdoor sanitization and disinfection tasks