When your job requires maximum productivity and versatility, turn to the DutyMax GH 300 HD sprayer to get the job done—fast! Equipped with more power and a long stroke, direct immersion pump, this hydraulic workhorse is built for the biggest, most demanding jobs and materials.Graco’s Standard Series of DutyMax HD gas hydraulic direct-immersion sprayers deliver everyday reliability and performance while easily handling the widest range of tip sizes, longer hose lengths more heavy duty materials such as plasters, elastomerics, fire retardants and liquid roofing solutions.
Graco DutyMax GH300 HD 3-in-1 Standard Series Gas Hydraulic Airless Sprayer
- Endurance Pump
- The Most Reliable Pump
- Lasts 2X longer than the next brand
- Better spraying performance and fast cleaning
- Long Life ceramic and stainless steel balls included for maximum versatility
- MaxFlo 2 with Pack-Out Protection
- Less Pack-Out, More Productivity
- Self-cleaning Vibra-Seal Technology eliminates material build-up
- Continuous spraying with True Pack-Out Protection for more productivity
- Optimized fluid passageways for the heaviest coatings
- High-Efficiency Hydraulic Motor
- Finish Jobs Faster
- Fast, responsive changeover
- Less maintenance and longer life with fewer moving parts
- 100% O-ring sealed fittings prevent leaks
- High-Capacity Cooling System
- Reduced Downtime
- Innovative design allows the pump to run cooler and more efficiently with extremely quiet operation
- Easier and more thorough fluid changes
- Reservoir cooling fins deflect more heat
- Honda® GX Engine
- Reliable, Powerful & Easy-to-Start
- Oil Alert shuts down engine to prevent damage if oil level drops too low
- Easy Out Pump Filter
- Easy Maintenance & Less Clogging
- Large filtering area for easier cleaning & fewer tip clogs ensure a quality finish
- Won’t collapse or get stuck with inside out filtering process
- Heavy-Duty Prime Valve
- High-Pressure Dumping Capability
- Maintenance-free design
- Durable Cart Design
- Rugged and Easy-to-Maneuver
- Withstands the tough jobsite conditions while absorbing impacts and vibrations
- Retractable handle doubles as coiled hose storage
- Endurance Pump
Compatible
Material
Primer, Water-Based Paint, Acrylics, Latex, Solventborne Paints, Block Filler, Drywall Mud, Elastomeric Coating Convertible Yes Engine
Brand
Honda Engine
Size (HP)
9.0 Engine
Size (kW)
6.7 Features Endurance Pump, MaxFlo 2, High-Capacity Cooling System, Honda Engine, Easy Out Filter, Heavy-Duty Prime Valve, Durable Cart Design Fluid Inlet Size (in) 1-5/16 Fluid Inlet Thread
Type
UN-2A Fluid
Outlet
Size (in)
3/8 Fluid
Outlet
Thread
Type
NPT Frame
Configuration
Cart Hose
Inlet
Diameter (in)
3/8 Includes Inline Heavy-Duty Texture Gun, RAC X LTX 643 Spray Tip, RAC X WideRAC 1239 Spray Tip, RAC X Guard, 1/2 in x 50 ft BlueMax II Airless Hose, 3/8 in x 11 ft 10 in BlueMax II Airless Whip Hose, TSL 4 oz Material Application Paints, Primers Maximum Flow
Rate
(GPM)
3 Maximum Hose
Length
(ft)
50 Maximum
Sound
Pressure Level
(dB(A))
96 Maximum
Tip Size (in)
0.057 Maximum Working
Pressure
(psi)
3300 Model DutyMax HD Number of Guns 1 Outlet Paint Filter 60 Mesh Stainless Steel Screen Overall
Height (in)
35.5 Overall
Length (in)
47.7 Overall
Width (in)
26.5 Power
Rating (HP)
9.0 Power
Rating (kW)
6.7 Power
Source
Gas Hydraulic Product
Series
Standard Pump
Mount Type
QuikChange Pump Rod Type Hard Chrome Pump
Sleeve
Material
Hardened Stainless Steel Pump Type Endurance Recommended Annual Usage 100-200 gallons per week Series GH 300 Type Airless Sprayer Weight (lb) 218 Wetted
Material
Zinc-Plated Carbon Steel, Nickel-Plated Carbon Steel, Stainless Steel, PTFE, Acetal, Chrome Plating, Leather, UHMWPE, Stainless Steel, Tungsten Carbide, Ceramics, Nylon, Aluminum