Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - closeup of plastic fan nozzle
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - detail shot of thebakc of the sprayer with padded backpack straps
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - closeup of adjustable brass nozzle
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - closeup of ergonomic wand handle
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - In-tank removable filter with FKM seals
Chapin 61800 – 15.1ltr ProSeries FKM Knapsack Sprayer - in-tank filter being replaced in the tank

Chapin 61800 – 15.1ltr ProSeries FKM Backpack Sprayer

SKU: 61800

FKM seals and gaskets designed to handle strong chemicals
Supplied with 3 different spray nozzles
Adjustable for right- or left-handed users
Removable filter
Ideal for construction, landscaping, agriculture & pest control

Chapin ProSeries Backpack Sprayer is ideal for landscape and turf professionals, but with the inclusion of FKM seals and gaskets can easily be used by groundworkers to spray concrete curing agent. Large capacity 15.1 litre translucent poly tank has a 100mm wide mouth opening for easy filling, cleaning, and checking fluid levels.

  • FKM seals and gaskets designed to handle a variety of oils & chemicals including pesticides & retarders
  • 3-Stage filtration system with in-tank removable/cleanable filter
  • Cushion grip poly shut-off and brass nozzle
  • 3-piece nozzle kit for a variety of applications – adjustable brass & poly nozzles and a poly fan tip spray nozzle
  • Padded shoulder straps to accommodate a full backpack for hours
  • Pump handle position can be switched to accommodate right- or left-handed users
  • SKU: 61800
  • Weight: 4846g
  • Dimensions: L215mm, H575mm, W380mm
  • Ideal for gardening, landscaping, lawn care, turf, cleaning & groundworks
  • Compatible with harsh chemicals including sodium hypochloride, weedkiller, fertilisers, pesticides, disinfectants & fungicides

Do the Chapin 61800 sprayers have Viton seals?

Yes, these sprayers have FKM seals (same as Viton, Viton is a registered trademark while FKM is the standard international name for these seals).

Can I change the pump handle on the Chapin 61800 sprayer to the other side of the sprayer?

Yes – the 61800 allows you to swap the pump handle from right to left.

Are the nozzles on the Chapin 61800 sprayer adjustable?

Yes – most models include adjustable spray nozzles so you can switch between fine mist and jet spray, depending on your needs.

Do you supply spare parts for Chapin 61800 sprayers?

Yes – we stock a full range of replacement parts and accessories, including nozzles, seals, and hose assemblies.

Are your sprayers battery powered or require electric?

No, currently all our Chapin sprayers are hand pumped pressure sprayers and do not need electricity to work.

How do I clean the Chapin 61800 sprayer after use?

After each use, rinse thoroughly with clean water to prevent residue build-up. For chemicals or oil-based products, flush with a suitable cleaning agent (like SmartSeal) recommended by the chemical manufacturer.

Chemical Compatibility

A chemical compatibility chart for the Chapin sprayer range. Chapin models 1949, 1280, 1380, 26021XP, 26031XP, 79500 and 61800 are all compatible with bleach, curing agents, disinfectants, moul oil, sodium hypochloride, patio & driveway cleaner & sealer, brick & concrete cleaner, artificial grass cleaner, grass greener, fertilisers, herbicides, pesticides, traffic film remover and liquid de-icer. Chapin model 1002 is compatible with disinfectants, grass greener, fertilisers, herbicides, pesticides, traffic film remover and liquid de-icer.