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INTRODUCTION
HVLP stands for High Volume, Low Pressure. This type of spraying technology allows you to spray extremely
accurately without all the overspray that occurs with the high pressure tank type equipment. In fact, in some
parts of the world the high pressure systems are banned by law on environmental grounds and HVLP type
systems are the only alternative for professional type spraying. The spray gun is extremely easy to use, very
safe and reduces the amount of paint used.
IMPORTANT SELECTING PAINT
This is a highly versatile spray kit that can be used with several different spray mediums including varnishes,
wood preservatives, enamels, oil and water based paints and cellulose. However some materials cannot be
sprayed so please check the recommendation of the manufacturer before buying the paint. If a material refers
to brush application only then it usually cannot be sprayed.
THIS UNIT CANNOT BE USED FOR TEXTURED PAINTS. USE OF THESE MATERIALS WILL CAUSE
PREMATURE WEAR, WHICH WILL VOID YOUR GUARANTEE.
TO OBTAIN THE BEST RESULTS FROM YOUR SPRAY KIT PLEASE READ THE INSTRUCTIONS
CAREFULLY BEFORE USE.
PREPARATION
Preparation of the surface and thinning of the paint are the two most important areas to be concerned with to
obtain the best results from your spray kit.
Ensure all surfaces are free from dust, dirt, rust and grease. If necessary rub down with sandpaper, or similar.
Masking of areas is important to ensure you do not spray those areas you wish to remain untouched.
THINNING
Your spray kit is supplied with a viscosity cup. Viscosity is a technical term used to indicate if a product is very
thin or very thick. If thin, the viscosity is said to be low, while if very thick the viscosity is said to be high.
Viscosity is measured in seconds. In order to spray some materials they need to be “thinned” (diluted).
Thinning is very important when spraying. Most paints etc are supplied ready for brush application and may
need to be thinned (diluted) for spraying purposes
.
Follow the manufacturers guide for thinning in conjunction with a spray gun. If in doubt please contact the
manufacturers of the paint. The viscosity cup will help you determine the correct thickness of the paint. Paint
is “thinned” by adding the substance which the paint is based upon. If a water based paint then water is added,
if oil based then white spirit, if cellulose then a cellulose thinner is added.
As some paints, wood preservatives and other sprayable materials contain particles that have differing
qualities, please ensure that when filling the paint container of the spray gun, that the paint is filtered through
either a funnel with a filter on it or through nylon tights or stockings. This will ensure that no large particles enter
the paint container, so preventing blockages and providing you with trouble free spraying. Ensure that a face
mask, gloves and goggles are worn at all times when spraying.
IDEAL VISCOSITY
Water based paints and
45 - 60 seconds
emulsions
Oil based paints
45 - 50 seconds
Wood preservatives
No dilution
Primers
45 - 50 seconds
Varnishes
No dilution
Aluminium paints
No dilution
Wood stains
No dilution
Cellulose
Manufacturer’s ratio
This spray gun can be used with products having a viscosity ranging from 10 to a
maximum of 60
seconds. Dip the viscosity cup into the material and fill up. Time how long
it takes for the viscosity cup to empty (Fig 1).
Using the above chart (or manufacturer’s instructions) as a guide determine if the material
requires further thinning, if so then thin accordingly.
Fig.1
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