Gun Selection
Gun Selection
HVLP Guns
An HVLP gun is a high transfer efficiency gun which lim- its the air pressure at the aircap to 10 psi maximum. In some areas, an HVLP gun is required for compliance with environmental standards.
Compliant Guns
A compliant gun is a high transfer efficiency gun which has been tested to have a transfer efficiency greater than or equal to HVLP guns. The Graco compliant guns have no restrictions on aircap pressures, but the gun inlet pressure must remain under 29 psi (21 MPa 2.1 bar) to remain in compliance.
Airspray Guns
Excellent atomization and high production rates typically with some reduction in transfer efficiency.
Air Caps
The chart below lists the air caps available for pressure feed, gravity, and siphon feed guns.
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| Typical Pattern |
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| Air Cap | Width* |
| Nozzle Orifice | Part |
Spray Gun | ID | in. (mm) | Gun Feed | in. (mm) | Number |
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HVLP | 321 | 15 (381) | Pressure Feed | 234753 | |
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HVLP | 322 | 15 (381) | Pressure Feed | .086 (2.2) | 234754 |
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HVLP | 323 | 15 (381) | Pressure Feed | .110 (2.8) | 234755 |
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HVLP | 320 | 12 (305) | Gravity/Siphon | 234752 | |
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Compliant | 006 | 11 (279) | All Models | 234762 | |
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Airspray | 315 | 13 (330) | Pressure Feed | 234757 | |
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Airspray | 318 | 10 (254) | Pressure Feed | .086 (2.2) | 234760 |
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Airspray | 319 | 10 (254) | Pressure Feed | .110 (2.8) | 234761 |
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Airspray | 317 | 9 (229) | Gravity/Siphon | 234759 | |
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Airspray | 313 | 10 (254) | Pressure Feed | 234756 | |
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Airspray | 316 | 10 (254) | Pressure Feed | 234758 | |
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*Measured with gun nozzle 8 in. (203 mm) from target surface.
6 | 310692C |