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RS18 Backpack Sprayer

RS18 Backpack Sprayer

Large capacity knapsack sprayer with 6 BAR maximum pressure & FPM seals for the spraying of mild acidic and neutral chemical solutions.


Regular price £126.50
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Product Description

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.

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 18-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 with all types of acidic chemical. We therefore recommend a compatibility test with 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.

Product Specification

Unit Height: 0.60m
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
Carry Position: Can be carried on back
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
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.

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.

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backpack sprayer with 6 bar maximum working pressure
RS18 Backpack Sprayer0548
RS18 Backpack Sprayer0548
£126.50/ea £0.00