GRACO 17E826 – GMAX II 3900 Standard Series Gas Airless Sprayer Lo-Boy, Chromex Piston

GRACO 17E826 – GMAX II 3900 Standard Series Gas Airless Sprayer Lo-Boy, Chromex Piston

GMAX II 3400 Standard Series airless sprayer designed for everyday reliability with unmatched durability and performance. Features the most reliable pump with Endurance Chromex Piston technology, easy maintenance capabilities, and rugged construction for handling the widest range of tip sizes, longer hose lengths, and heavier coatings with ease.

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.

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

ProConnect 2 Pump Replacement System

Pump swaps in 1-minute or less no tools, pins or parts to lose

Eliminate costly downtime

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

Precision Advantage Drive

The longest lasting drive

Hardened steel gears provide extremely quiet operation

Lifetime Warranty

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

Heavy-Duty Prime Valve

Maintenance-free design withstands high-pressure dumping

Durable Cart Design

Rugged and easy-to-maneuver

Thick chrome over steel and pneumatic wheels for tough jobsite conditions

Convenient retractable bucket hook allows for easy movement on the job

Honda® Engine

Reliable, powerful & easy-to-start

Oil Alert shuts down engine to prevent damage if oil level drops too low

Contractor Preferred

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

More info: graco.com/ContractorPC

Jobsite Ready

Includes RAC X SwitchTip and 50 ft of BlueMax II hose

Additional Specifications

Material: Chromex Piston

Series: Standard

Model: 3400

Application: architectural paints and coatings

Usage: professional use only

Convertible	Non-Convertible
Engine Brand	Honda
Engine Size (HP)	4
Features	Endurance Chromex Pump, ProConnect 2, SmartControl 3.0, Honda Engine, Advantage Drive, Easy Out Filter, Heavy-Duty Prime Valve, Contractor PC Gun
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	Lo-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
Inlet Paint Strainer	8 Mesh Stainless Steel Screen
Maximum Flow Rate (GPM)	1.25
Maximum Sound Pressure Level (dB(A))	96
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 (MPa)	22.8
Maximum Working Pressure (psi)	3300
Model	GMAX II
Number of Guns	2
Outlet Paint Filter	60 Mesh Stainless Steel Screen
Overall Height (in)	26.4
Overall Length (in)	46.9
Overall Width (in)	24.4
Power Rating (HP)	4.0
Power Rating (W)	2982.8
Power Rating (kW)	2.98
Power Source	Gas
Pressure Control Type	SmartControl 3.0
Pump Mount Type	ProConnect 2
Pump Rod Type	Chromex
Pump Sleeve Material	Stainless Steel
Pump Type	Endurance
Recommended Annual Usage	Up to 500 gallons per week
Series	3900
Type	Airless Sprayer
Weight (lb)	123
Wetted Material	Acetal, Aluminum, Chrome Plating, Fluoroelastomer, Leather, Nylon, PTFE, Polyurethane, Stainless Steel, Tungsten Carbide, UHMWPE, Zinc-Plated Carbon Steel, Nickel-Plated Carbon Steel
Convertible	Non-Convertible
Engine Brand	Honda
Engine Size (HP)	4
Features	Endurance Chromex Pump, ProConnect 2, SmartControl 3.0, Honda Engine, Advantage Drive, Easy Out Filter, Heavy-Duty Prime Valve, Contractor PC Gun
Fluid Inlet Size (cm)	3.334
Fluid Inlet Size (mm)	33.34
Fluid Inlet Thread Type	UN-2A
Fluid Outlet Size (cm)	0.635
Fluid Outlet Size (mm)	6.35
Fluid Outlet Thread Type	NPSM
Frame Configuration	Lo-Boy
Hose Inlet Diameter (cm)	0.635
Hose Inlet Diameter (mm)	6.35
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
Inlet Paint Strainer	8 Mesh Stainless Steel Screen
Maximum Flow Rate (L/min)	4.73
Maximum Sound Pressure Level (dB(A))	96
Maximum Tip Size (cm)	0.09144
Maximum Tip Size (mm)	0.9144
Maximum Tip Size 1 Gun (cm)	0.09144
Maximum Tip Size 1 Gun (mm)	0.9144
Maximum Tip Size 2 Guns (cm)	0.05842
Maximum Tip Size 2 Guns (mm)	0.5842
Maximum Working Pressure (MPa)	22.8
Maximum Working Pressure (bar)	228
Maximum Working Pressure (kPa)	22800
Model	GMAX II
Number of Guns	2
Outlet Paint Filter	60 Mesh Stainless Steel Screen
Overall Height (cm)	67.1
Overall Height (mm)	671
Overall Length (cm)	119.1
Overall Length (mm)	1191
Overall Width (cm)	62
Overall Width (mm)	620
Power Rating (HP)	4.0
Power Rating (W)	2982.8
Power Rating (cc)	120
Power Rating (kW)	2.98
Power Source	Gas
Pressure Control Type	SmartControl 3.0
Pump Mount Type	ProConnect 2
Pump Rod Type	Chromex
Pump Sleeve Material	Stainless Steel
Pump Type	Endurance
Recommended Annual Usage	Up to 500 gallons per week
Series	3900
Type	Airless Sprayer
Weight (kg)	56
Wetted Material	Acetal, Aluminum, Chrome Plating, Fluoroelastomer, Leather, Nylon, PTFE, Polyurethane, Stainless Steel, Tungsten Carbide, UHMWPE, Zinc-Plated Carbon Steel, Nickel-Plated Carbon Steel

Features

Endurance Chromex Piston Pump – lasts 2X longer than next leading brand

Easy Out Pump Filter for faster cleaning and fewer tip clogs

QuikChange pump design allows pump swap in minutes

Consistent spray fan and pressure control with SmartControl technology

Heavy-Duty Prime Valve for maintenance-free high-pressure durning

Durable cart design with thick chrome over steel frame

Applications

Everyday painting applications

Wide range of coatings including heavier materials

Professional painting contractors

Maintenance and repair work

Professional contracting

Large scale painting projects

Compatible Equipment

Wide range of tip sizes

Longer hose lengths

Various coating types

Honda engines

Kohler engines

GMAX II series accessories

Related Parts

17E825 – GMAX II 3400 Standard

17E327 – GMAX II 3900 Standard

17E331 – GMAX II 5900 Standard

17E336 – GMAX II 7900 Standard

17E825 – GMAX II 3900 Standard

17E827 – GMAX II 3900 Standard

17E828 – GMAX II 3900 ProContractor

17E829 – GMAX II 3900 Lo-Boy ProContractor

17E827, 2012514 (EMEA)

Part of the GMAX II Standard Series focusing on everyday reliability and durability. Features Honda engine option and various pressure switch configurations. Part of GMAX II 3900 series with Lo-Boy cart configuration for easier maneuverability and transport Gas airless sprayer for professional use only. Not approved for use in European explosive atmosphere locations. Related manuals: Parts 3A6417, Honda Engine Manual.

Reference Manuals

344383 (Page 6) Gas Airless Sprayers

3A6400 (Page 1) GMAX 3400, GMAX II 3900/5900/7900, and TexSpray 5900HD/7900HD Airless Sprayers

3A6417 (Page 1) GMAX 3400, GMAX II 3900/5900/7900, and TexSpray 5900HD/7900HD Airless Sprayers, Parts