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.
Endurance Vortex MaxLife Piston Pump - Breakthrough vortex rotating rod technology. Lasts 6X longer between repacks with innovative MaxLife technology. Oversized passages for high velocity flow to rotate piston for even wear. Repack pump in minutes with new QuikPak cartridge repair system.
SmartControl™ 3.0 - Outfitted with an electronic pressure control system for high quality, consistent spray fan. Electronic pressure control reduces "dead-band" found with most mechanical pressure controls.
Rugged, Durable Cart Design - Graco sprayers are built to last. The Chrome plated, welded steel cart is rugged and has telescoping handle with integrated hose rack. Full pneumatic wheels roll easily on most surfaces and absorb impacts and vibrations.
Advantage Drive System - Provides performance with less weight. Get peace of mind with a lifetime guarantee on the drive.
Heavy-Duty Prime Valve - Maintenance-free design withstands high pressure dumping.