Graco Inc. TI14428A Manuel D’Utilisation

Selection Charts 

Light Fluid: Up to 18 seconds with No. 2 Zahn 
cup (20 centipoise)

Medium Fluid:19 to 28 seconds with No. 2 
Zahn cup (20-64 centipoise)

Heavy Fluid: Greater than 28 seconds with 
No. 2 Zahn cup (greater than 64 centipoise) -- 
2.8 Volatile Organic Compounds, High-solid 
Polyurethanes, Heavy Waterborne Enamels

An HVLP gun is a high transfer efficiency gun 
that limits the air pressure at the air cap to 
10 psi (0.07 MPa, 0.7 bar) maximum. In some 
areas, an HVLP gun is required for compliance 
with environmental standards. See the Air Cap 
chart, page 8, for maximum inlet pressure.

An LVMP gun is a high transfer efficiency gun 
that has been tested to have a transfer effi-
ciency greater than or equal to HVLP guns. In 
addition, the LVMP air cap consumes much 
less air than the HVLP air cap. Graco LVMP 
guns have no restrictions on air cap pressures.

A conventional gun has excellent atomization 
and high production rates typically with some 
reduction in transfer efficiency.

A HiTEch gun is a high transfer efficiency gun 
with excellent atomization. Graco HiTEch guns 
have no restrictions on air cap pressures.

The spray gun's needle/nozzle kits range in 
size to provide different fluid flow rates. As a 
general guideline, use the fluid nozzle that will 
give the required flow with the needle fully trig-
gered at a fluid pressure of 5–20 psi 
(0.035–0.14 MPa, 0.35–1.4 bar).

•

For low flow rates or light viscosity fluid, 
select the smaller nozzle sizes.

•

For high flow rates or high viscosity fluid, 
select the larger nozzle sizes.

•

For abrasive fluids, the gun models with 
tungsten carbide needle tip and nozzle are 
recommended.

0.020

0.5

light

0.2-1.7

5-50

0.028

0.7

light

0.3-3.4

10-100

0.035

0.9

light-medium

0.5-5.1

15-150

0.039

1.0

light-medium

0.7-6.8

20-200

0.043

1.1

light-medium

0.8-8.5

25-250

0.051

1.3

medium

1.2-11.8

35-350

0.059

1.5

medium

1.5-15.2

45-450