RS185 - 18 Litre

This knapsack sprayer is manufactured with a rigid polypropylene tank and fitted with FPM chemical resistant seals which will allow you to spray acidic and neutral chemical products. Due to the unique design of our RS range, the tank can be pressurised to 6 BAR (88psi) which is double the working pressure of the vast majority of other sprayers.

The potentially high working pressure means that there is not the requirement to constantly pump this sprayer in order to maintain a spray pattern. This is very useful, especially when using with our long telescopic lances.

Product Description

Special features of the product:

• Ergonomically formed shut-off valve with control pressure gauge

• Filling cap with integrated measuring cup and captive loop

• Large base: Safe stand even on an uneven surface

• Extra-large filling opening

• Ergonomically shaped integral grip that is adjustable in length

• Pump lever can be installed on left or right side

• Functional reliable spray wand holder

• Practical mounting bracket for spray shield on both sides

A review of the RS knapsack sprayers can be found in the 'Our Review' section. Simply click the tab above to read our review of the RS range of sprayers which, in addition to this sprayer, includes our 12-litre model and our brand new 18-litre model for alkaline solutions.

Whilst this prayer is fitted with FPM seals it does not mean that it can be used to spray all types of acidic chemical. We therefore recommend a compatibility test when using aggressive chemical solutions. If you think there may be an issue with a product that you wish to use then just send us the safety data sheet (MSDS) for the product and we will check compatibility and recommend an alternative sprayer if necessary.

• Unit Height: 0.55m
  
• Unit Weight: 5kg
  
• Maximum Operating Pressure: 6 BAR (87 psi)
• Tank Working Capacity: 18 litres
• Total Tank Capacity: 20 litres
• pH Range: 1-9*
  
• Tank Material: Polypropylene
• Tank Ullage: 2 litres
• Pump: Plastic piston pump
  
• Carry Position: Can be carried on back or by hand
• Maximum Flow: 1.4 litres/min @ 6 BAR with supplied nozzle
• Hose: 1.5 metres, reinforced with fabric insert
• Lance: Brass, 50cm length and 360° rotatable
• Supplied Nozzle: Brass, hollow cone 1.1 mm
• Connector required when using with 3.2/5.4-metre telescopic lance
• Padded shoulder carrying straps & back padding
• 20 years spare parts supply GUARANTEED
• Seals FPM - Synthetic rubber with high elasticity properties which makes
  it a very good product for the protection of seals and O-rings. FPM seals are highly resistant to hydrocarbons, oils, strong acids, aromatic and chlorinated solvents and has a high temperature resistance.

*We recommend a full compatibility test with aggressive chemical solutions. If you are unsure about a product that you plan to use then send us the safety data sheet (MSDS) for the product and we will check compatibility and recommend an alternative sprayer if necessary.

Can this sprayer be used with all types of acidic chemicals?

Although fitted with FPM seals, we can't guarantee that this sprayer is compatible with any type of liquid just because it's an acid. Please remember that it is not just the pH that determines which sprayer can be used but the active ingredients of your chemical. We therefore recommend that if there is any uncertainty then send us the safety data sheet (MSDS) for the product you wish to use and we will check compatibility. If the product is not compatible then we will recommend an alternative sprayer for you.

What does Tank Ullage mean?

Ullage is the name given to the gap between the maximum fill and the total tank capacity. It is important with sprayers as the larger the ullage is then the more space there is for compressed air. The more compressed air you have then the longer spraying time you have before you run out of pressure. Given the design of a knapsack sprayer the ullage is not as important as with a compression sprayer which is why, generally, knapsack sprayers will have a smaller ullage to tank capacity ration than a compression sprayer.

Can this sprayer be used with your long telescopic lances?

Yes. This sprayer can be used with both our 2.5 metre, 3.2 metre and 5.4-metre telescopic lances. We have included these lances in the accessories list and they include any required connectors. It can also be used with our shorter, telescopic brass lance extensions so additional reach isn't something that you really have to worry about.

What guarantee do I get with this sprayer?

You get a full 12 months with mechanical breakdowns so, providing that the sprayer is being used as intended, then if something snaps you tell us and we replace the part for you. If it's damage caused by a chemical compatibility issue then we will cover the damage providing that we have confirmed the chemical compatibility with the sprayer. When it comes to the availability of spares, this is guaranteed for 20 years from the date of purchase.