Conventional Guns; Air Caps - Graco AirPro 313516C Instructions Manual

Conventional Guns

An airspray gun has excellent atomization and
high production rates typically with some
reduction in transfer efficiency.
Proper Needle/Nozzle Selection
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).

Air Caps

Air Cap
Part
No. Type
289773 Conventional General Metal
289784 Conventional General Metal 0.070 (1.8)
289041 HVLP
289042 Compliant
288861 Conventional
289049 Conventional
289115 HVLP
289325 HVLP
289050 Compliant
289327 Compliant
288862 Conventional
288864 HVLP
288863 Compliant
313516C
Nozzle
Orifice
Application in. (mm)
0.020–0.055
(0.5–1.4)
0.020–0.070
General Metal (0.5–1.8)
0.020–0.070
General Metal (0.5–1.8)
High Wear 0.059 (1.5)
0.070–0.086
High Wear (1.8–2.2)
High Wear 0.059 (1.5)
High Wear 0.070 (1.8)
High Wear 0.059 (1.5)
High Wear 0.070 (1.8)
0.030–0.040
Wood (0.8–1.0)
0.030–0.040
Wood (0.8–1.0)
0.030–0.040
Wood (0.8–1.0)
• 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 high wear gun mod-
els are recommended.
Atomizing Air
Max. HVLP/Compliant
Manifold Inlet Pressure
psi (MPa, bar)
N/A
N/A
17 (0.12, 1.2)
29 (0.20, 2.0)
N/A
N/A
18 (0.12, 1.2)
18 (0.12, 1.2)
28 (0.19, 1.9)
29 (0.20, 2.0)
N/A
24 (0.17, 1.7)
27 (0.19, 1.9)
Selection Charts
Fan Air
Max. HVLP/Compliant
Manifold Inlet Pressure
psi (MPa, bar)
N/A
N/A
29 (0.20, 2.0)
33 (0.23, 2.3)
N/A
N/A
28 (0.19, 1.9)
27 (0.19, 1.9)
31 (0.21, 2.1)
32 (0.22, 2.2)
N/A
26 (0.18, 1.8)
42 (0.29, 2.9)
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