Producing 65% more performance than the GMAX 3400, the GMAX II 3900 has the power and flow to handle up to two guns and is ideal for the professional contractor who sprays a wide variety of coatings.
Everyday Reliability. Graco GMAX Standard Series gas-powered airless paint sprayers deliver unmatched durability and performance, with the capability to handle the widest range of tip sizes, longer hose lengths and heavier coatings with ease.
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Endurance Chromex Piston Pump
- The most reliable pump
- Lasts 2X longer than the next leading brand
- Repack the pump in minutes with the new QuikPak Cartridge System
- QuikChange pump design allows you to swap the pump easily on the job
- Faster cleaning with the QuikAccess intake foot valve
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SmartControl 3.0
- Consistent spray fan & pressure control
- Handles the widest range of coatings with the most consistent fan pattern
- Lowest dead band at any pressure
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Precision Advantage Drive
- The longest lasting drive
- Hardened steel gears provide extremely quiet operation
- Lifetime Warranty
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Easy Out Pump Filter
- Easy maintenance & less clogging
- Exclusive inside-out filtering won't collapse to ensure a quality finish
- Vertical design for less mess
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Heavy-Duty Prime Valve
- Maintenance-free design withstands high-pressure dumping
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Durable Cart Design
- Rugged and easy-to-maneuver
- Thick chrome over steel and pneumatic wheels for tough jobsite conditions
- Retractable handle doubles as coiled hose storage
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Kohler® Command Pro Engine
- Heavy-duty air cleaner, forged steel crankshaft and cast-iron cylinder liner deliver contractor-grade power and reliability
- Quad-Clean™ all-season four-stage cyclonic air filter protects engine in tough jobsite conditions
- Oil-Sentry™ system automatically shuts engine down in low-oil conditions
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Contractor PC Spray Gun
- All-day comfort & control
- Lightest weight gun in its class
- Up to 50% lighter trigger pull force
- E-Z Fit adjustable trigger length
- Complete gun rebuild in seconds with ProConnect cartridge
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Jobsite Ready
- Includes RAC X SwitchTip and 50 ft of BlueMax II hose
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Technical Specification
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| Convertible |
Non-Convertible
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| Engine Brand | Kohler |
| Features |
Endurance Chromex Pump, SmartControl 3.0, Kohler Engine, Advantage Drive, Easy Out Filter, Heavy-Duty Prime Valve, Contractor PC Gun
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| Fluid Inlet Size (in) | 1-5/16 |
| Fluid Inlet Thread Type | UN-2A |
| Fluid Outlet Size (in) | 1/4 |
| Fluid Outlet Thread Type | NPSM |
| Frame Configuration | Hi-Boy |
| Hose Inlet Diameter (in) | 1/4 |
| Includes |
Contractor PC Gun, RAC X LTX 517 Spray Tip, RAC X Guard, 1/4 in x 50 ft BlueMax II Airless Hose, TSL 4 oz
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| Inlet Paint Strainer |
8 Mesh Stainless Steel Screen
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| Maximum Flow Rate (GPM) | 1.25 |
| Maximum Tip Size (in) | 0.036 |
| Maximum Tip Size 1 Gun (in) | 0.036 |
| Maximum Tip Size 2 Guns (in) | 0.023 |
| Maximum Working Pressure (psi) | 3300 |
| Model | GMAX II |
| Number of Guns | 2 |
| Outlet Paint Filter |
60 Mesh Stainless Steel Screen
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| Overall Height (in) | 40.8 |
| Overall Length (in) | 38.3 |
| Overall Width (in) | 22.3 |
| Power Rating (HP) | 4 |
| Power Rating (kW) | 2.98 |
| Power Source | Gas |
| Pressure Control Type |
SmartControl 3.0
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| Pump Mount Type | QuikChange |
| Pump Rod Type | Chromex |
| Pump Sleeve Material | Stainless Steel |
| Pump Type | Endurance |
| Recommended Annual Usage |
Up to 500 gallons per week
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| Series | 3900 |
| Type |
Airless Sprayer
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