Graco GMAX II HD Intumescent Fireproofing Sprayers is ideal for contractors who demand reliability and durability.They handle the widest range of tip sizes, longer hose lengths, and heavier coatings with ease. Optimized for heavy coatings as well as the full range of paints and primers. Get the Right Components for Peak Performance, When Graco GMAX II HD Intumescent Fireproofing Sprayers are on the bid, downtime is the enemy. From graco truecoat 360 parts or graco paint sprayers to the mighty graco 7900, SprayersAndParts keeps every contractor-grade consumable in one friction-free stop. Our catalog of genuine Graco parts is updated, so you’ll never chase discontinued SKUs or gamble on knock-offs that can’t take the heat of 3300 psi fireproofing duty.
Why Choose Genuine Graco GMAX II HD Parts?
- Engineered for Heavy Coatings – Optimised fluid passages and MaxFlo 2 pack-out protection keep intumescent mastics flowing without stalls.
- MaxLife™ Pump Technology – Hardened rod and sleeve last six times longer between repacks than economy pumps.
- Vibra-Seal Self-Cleaning Inlet – Eliminates material build-up so you spray longer and clean faster.
- Backed by Graco – Graco’s factory warranty.
Performance Specs at a Glance
- Maximum Working Pressure: 3300 psi / 227 bar – holds a dead-band of < 1 % for steel-beam coverage.
- Maximum Flow (GMAX II 7900 HD): 8.33 L/min / 2.2 gpm.
- Maximum Tip Size (1-gun): 0.048 in; two-gun: 0.035 in.
- Recommended Hose Length: up to 60 m / 200 ft with SmartControl 3.0.
- Engine Platform: Honda GX390 (7900) or GX200 (5900) for first-pull reliability and global service parts.
Direct-Fit & Cross-Fleet Compatibility
These parts drop straight onto the entire GMAX II HD family and share consumables with several electric rigs, so you can cut truck stock by half:
- GMAX II 7900 HD 3-in-1 ProContractor, Standard & IronMan – P/N 17E842, 17E841, 17E843.
- GMAX II 5900 HD – Standard & ProContractor models P/N 17E840, 17H819.
- TexSpray HD Intumescent Packages – share the same MaxLife pump lowers and RAC X hardware.
- Graco TrueCoat 360VSP Electric TrueAirless Sprayer – identical RAC X guards let you buy one tip family for both crews.
- Magnum & Project Painter Plus DIY rigs – Easy-Out™ filters, graco airless sprayer tips and graco paint sprayer attachments transfer 100 %.
Real-World Benefits You’ll Feel on the Trigger
The combination of SmartControl 3.0 and MaxLife™ hardware gives you a creamy fan pattern at the tip and a cooler hydraulic pack on the frame. That means:
- Fewer Touch-Ups – 25 % less overspray and feather-edges that blend like butter.
- Longer Hose Runs – Maintain spec pressure at 200 ft, perfect for mezzanine or dock work.
- No Mid-Job Clogs – Vibra-Seal vibrates the siphon ball 22 times/second to keep intumescent fillers suspended.
- Six-Hour Shifts, One Tank – Honda’s low-RPM governor sips fuel even at full 0.048 tip output.
Pro Tips for Decade-Long Reliability
- Schedule by Hours, Not Calendar – Packings last ~1000 spray hours; log changes in BlueLink for warranty proof.
- Rotate Two MaxLife Pumps – A spare lower swaps in under 60 seconds; your crew never breaks set-up.
- Run Pump Armor Overnight – Prevent dried solids in the ball check and cut morning start-up to minutes.
- Color-Code Bins – Yellow = belts, Red = graco repair kit seals, Blue = RAC X tips—night shift grabs the right box every time.
Bundle the Crew Favorites & Slash Freight
- 24M725 Ceramic Check Valve – solvent & water compatibility, shares threads with graco airless sprayer parts.
- 17H839 QuikPak™ Pump Cartridge – 20-minute rebuild for any MaxLife lower.
- RAC X LTX 531 & 427 Tips – factory-spec orifice for intumescent materials.
- BlueMax II 3/8" x 50 ft Hose – crush-proof braid equals safer footing on mezzanine work.
Ready to Spray Faster, Last Longer & Win More Bids?
Add genuine Graco GMAX II HD Intumescent Fireproofing parts to your cart now and experience zero-downtime performance on tomorrow’s beam-count.
