Full Product Manual

• Viscosity is a technical term used to indicate the thickness of a liquid. Having the correct viscosity

of paint is important to ensure the paint atomizes correctly and sprays well, giving you a good-

quality ﬁnish. If your material is thin like water then the viscosity is said to be low, while if thick like

latex interior paint, then viscosity is said to be high.

• You should always test the viscosity (or thickness) of paint before spraying to see if thinning

is required. The correct viscosity is not too high or low, and it is important to ensure the paint

atomizes correctly and sprays evenly.

Before spraying, the material being used may need to be thinned with the proper solvent as

speciﬁed by the material manufacturer. Follow the instructions below.

1. Stir the paint or other spraying material thoroughly before measuring the viscosity.

2. Dip the viscosity cup completely into the spraying material.

3. Hold the cup up and measure (in seconds) the time it takes to empty the liquid out of the cup. This

time is referred to below as RUN OUT TIME. If the RUN OUT TIME is higher than indicated on the

table on Page 8, refer to the instructions in the THINNING section on Page 9.

Material to be sprayed should always be strained to remove any impurities which may enter and

clog the system. Impurities in the paint or other material will result in poor performance and a

poor ﬁnish.

MATERIAL PREPARATION THINNING CHART

Material Run out Time (Sec)

1) Oil enamel

2) Oil based primer

3) Oil stain

4) Clear sealer

5) Polyurethane

6) Varnish

7) Lacquer sanding sealer

8) Lacquer

9) Automotive ﬁnishes

10) Latex

25–60

30–60

No thinning required

20–60

25–35

20–40

45–60