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.With features that enable you to work more efficiently and finish jobs faster, DutyMax HD ProContractor Series gas hydraulic airless sprayers spray a wide range of materials – from latex and acrylics to more heavy duty materials like plasters, elastomerics, fire retardants and liquid roofing solutions.

• Extreme-Duty Endurance MaxLife Pump
  • Lasts 6X longer between repacks
  • 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
• ProConnect 2 One-Part Pump Replacement System
  • Eliminate Costly Downtime
  • Swap your pump in less than 1 minute – with no tools, pins or parts to lose
• QuikReel Hose Management System
  • Easy hose management
  • Deploy and rewind up to 300 feet (90 meters) of hose in seconds
  • No twisting, kinking, and coiling
  • Use only the hose you need — the rest stays on the reel
• Crushproof Inlet Strainer
  • Improved Filtration
  • Stands up to harsh impacts
• 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
• Additional Features
  • Heavy-Duty Prime Valve
  • Durable Cart Design

Technical Specifications

CONVERT TO METRIC

Compatible Material	Acrylics, Coating, Drywall Mud, Elastomer, Enamel, Epoxies, Latex
Convertible	Yes
Engine Brand	Honda
Engine Size (HP)	9.0
Engine Size (kW)	6.7
Features	Extreme-Duty MaxLife Pump, MaxFlo 2, High-Capacity Cooling System, Honda Engine, ProConnect 2, QuikReel, Crushproof Inlet Strainer, 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
Hose Reel Type	QuikReel
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 100 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)	3.0
Maximum Hose Length (ft)	50
Maximum Sound Pressure Level (dB(A))	96
Maximum Tip Size (in)	0.057
Maximum Tip Size 1 Gun (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)	39
Overall Length (in)	52
Overall Width (in)	26.5
Power Rating (HP)	9.0
Power Rating (kW)	6.7
Power Source	Gas Hydraulic
Product Series	ProContractor
Pump Mount Type	ProConnect
Pump Rod Type	Hard Chrome
Pump Sleeve Material	MaxLife
Pump Type	Endurance
Recommended Annual Usage	100-200 gallons per week
Series	GH 300
Type	Airless Sprayer
Volume Per Cycle (cycles/gal)	80
Weight (lb)	199
Wetted Material	Acetal, Aluminum, Ceramics, Chrome Plating, Leather, Nylon, PTFE, Stainless Steel, Tungsten Carbide, UHMWPE, Zinc-Plated Carbon Steel, Nickel-Plated Carbon Steel

SHOW FEWER SPECIFICATIONS

Product Manuals

334606H, DutyMax EH/GH 230/300, DH230 Hydraulic Sprayers, Operation, Parts, English (15 MB)

English 

309495L, Manual, Inline HD Texture Gun, Operation, Parts, English (4 MB)

English 

334654D, GH 130/200/230/300 and DutyMax GH/EH 230/300 Displacement Pump, Repair English (5 MB)

(English Only)

Warranty

Graco CED Warranty (89 KB)

(English Only)

Sales Literature

344382EN-D Texture Sprayers Brochure (8 MB)

English 

What’s Included

PART NO.	DESCRIPTION	QTY	UNIT
245820	Inline Heavy-Duty Texture Airless Spray Gun, 4 Finger Trigger	1	ea
LTX643	RAC X SwitchTip, 643	1	ea
WR1239	RAC X Wide RAC SwitchTip, 1239	1	ea
246215	RAC X HandTite Tip Guard	1	ea
278499	HOSE, CPLD, 1/2 IN X 50 FT	2	ea
238049	TSL Throat Seal Liquid, 4 oz	1	ea

Repair Parts

PART NO.	DESCRIPTION
244067	Easy Out Pump Manifold Filter, Long, 60 mesh
243993	HOSE, DRAIN, ULTRA, HI-BOY
245103	Q KIT REPAIR, DRAIN VALVE
288760	KIT,REPAIR,HYDR MOT,GH230/300
24X001	KIT,REPAIR,PUMP,DM230/300,PRO
288737	KIT,REPAIR,TRIP ROD/PISTON/CA
117285	PACKING, O-RING
15V573	Q STRAINER, CRUSH PROOF,1-11 1/2 NPSM
15C766	TUBE, DIFFUSION