Smith NL400 Backpack Sprayer

£134.40 inc VAT

The Smith NL400 Backpack sprayer offers advanced ergonomics, functionality and technology, this 15L Professional Knapsack Sprayer is suitable for both amateurs and professional users.
This sprayer is for use in various settings, from cultivated plots to large scale intensive industrial use.

the NL400 15L backpack sprayer is perfect for use by homeowners wanting to spray weed killer, moss control and liquid fertilisers. Equally suitable for professional groundspeople, greenkeepers and landscapers.

NL400 Backpack Sprayer Features

NL400 Knapsack Sprayer - Padded Straps

  • A 15 Litre Spray Tank
  • Exclusive, internal No Leak Pump™ never leaves harsh chemicals dripping down your back and pressurizes to 150 psi.
  • Built-in agitator can handle liquids, powders, and water-soluble solutions. Agitator keeps them mixed, in solution, and ready to spray.
  • Durable, 21" stainless steel wand with exclusive poly lining and the highest quality Viton® seals for maximum chemical resistance.
  • Achieves 65% higher pressure than leading diaphragm pump backpacks. Spray hard-to-reach areas and create more precise spray patterns.
  • Patented pump design has minimal high-wear parts (60% fewer replacement parts) and can be repaired in minutes without tools. Less down time!
  • Includes brass and poly adjustable nozzles, wide and narrow flat fans, and high performance foaming nozzle. Also accepts TeeJet® nozzles


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The Magnum 2000 Professional 15L Knapsack Sprayer has advanced ergonomics, functionality and technology. The Magnum 2000 15L Professional Knapsack Sprayer is suitable for anybody to use, from amateurs to the most demanding professional use, it can be used to cultivate plots or on large scale intensive developments. 

The Magnum 2000 is comfortable to use and has a 15L capacity with a fully padded harness with comfortable padded straps to ensure it’s comfortable for long term use, while also ensuring there are no leaks with the viton seal. 
The Magnum 2000 has agitator paddles to make sure the liquid inside the 15L tank is fully mixed and ready to be applied at all times, with the sprayer being made of materials that are resistant to commonly found chemicals to ensure that it is usable for the longest time possible. 


  • Fully Padded Professional Harness
  • Fully Serviceable, Replace Seals in less than 10 Minutes 
  • Longer Life Span – Resistant to Most Chemicals 
  • Better Comfort When Working Longer Hours 
  • Removable Filter Basket 
  • 15L Capacity Tank
  • No Possibility of External Leaks
  • Less Breakage so a Longer Life Span 
  • Easier to Wash
  • Within 20kg Weight Carrying Guidelines when Full
  • Internal Piston Pump with a Maximum 10.3 bar (150Psi)
  • Durable Stainless Steel Lance and Chassis 
  • Fold Away Handle