Your One-Stop Source for OEM Graco DutyMax EH300 HD Sprayer – Spray Gun & Hose Parts & Kits
Two-component epoxies at dusk? Fibered roof-coat at dawn? Graco DutyMax EH300 HD sprays them all. Yet even this workhorse quits the moment a Chromex® piston scars or a fan tip shreds. That’s the difference between billable square footage and overtime make-ups. Savvy contractors avoid that risk by stocking OEM parts from SprayersAndParts.com for all graco sprayers part. Every rod, filter, solenoid and swivel is hydro-tested, serial-traced, and boxed minutes after you click Add to Cart, keeping revenue on-stream and inspectors smiling.
Why Demand Genuine DutyMax EH300 HD Parts?
- Chromex® Rod & MaxLife™ Seats – 64 Rc nitrided steel shrugs off silica & TiO2 that jaws stainless copy-cats in a single day.
- V-Max Blue™ Hybrid Packings – leather/UHMW stack self-lubricates from 40 °F slab starts to 110 °F tank farms without weep-by.
- SmartStart™ Pressure Valve – OEM sensor idles the 160 cc Honda when you release the trigger, saving ≈30 % fuel per shift.
- ProConnect™ Pump Module – slide out a blown lower in 60 s; no messy bench-vise shuffle.
- Warranty Intact – Graco honours Endurance™ & power-train cover only with serialized parts. One clone diaphragm voids the lot.
Key Features & Specs
| Metric | Specification |
|---|---|
| Max Working Pressure | 3 300 psi / 228 bar |
| Max Flow (single gun) | 0.9 gpm / 3.4 L min |
| Engine | Honda GX160 4-stroke • 5.5 hp |
| Pump Swap Time | < 60 s via ProConnect 2 door |
| Tip Range | RAC X LP 0.017″–0.035″ • Heavy texture 0.041″ |
One Kit, Many Rigs—Cross-Compatibility Pays
Graco re-used stroke length and filter cores across its gas-hydraulic family, so a single DutyMax kit safeguards half your fleet:
- DutyMax EH200 & EH300 – identical seats, balls & 60-mesh filters.
- Ultra Max II 7900 – Easy-Out™ manifold filter & RAC X™ tips bolt on for quick backups.
- Magnum Pro X7 Parts – graco gun filters, RAC X guards & Contractor PC cartridges drop-in for weekend rentals.
- Magnum LTS 17 / XR7 – ProConnect door kit adds 60-s pump swaps.
- 395 PC Stand & 490 PC Pro – ball/seat and 60-mesh filter cross-fits for emergency coverage.
Top-Moving DutyMax EH300 Graco Spray-Gun & Hose Components
- 243183 Endurance™ Pump Lower – Chromex rod, V-Max packings, MaxLife seats; factory blast-tested at 5 000 psi.
- 24Y472 Contractor PC Gun – 30-second cartridge rebuild; match any graco paint sprayer guard.
- 240 794 BlueMax II 50 ft Hose – ¼″ ID dual-swivel; pair with 3 ft whip for soffits.
- 17G180 RAC X LP 517 Tip + Guard – satin at 1 400 psi; OSHA meter logs 3 dB quieter rigs.
- Easy-Out™ Filter Set – 30-mesh yellow (roof coat), 60-mesh black (latex), 100-mesh blue (enamel).
- Pump Armor™ 1 gal – rust inhibitor; mandatory for off-season storage.
Five Habits for a 1 200-Hour DutyMax EH300
- Warm Flush 110 °F—high-build epoxy breaks down 35 % faster; BlueMax liner safe to 160 °F.
- Wet-Cup Discipline—10 TSL drops every break; dry cups groove Chromex rods.
- Retorque Packings after First Hour—leather seats as it hydrates.
- Mesh-to-Tip Rule—30-mesh for ≥0.027″ tips; 60-mesh 0.017–0.025″; 100-mesh for graco 395 pc enamel passes.
- Rotate Hose Ends Weekly—balances liner wear; keeps SmartControl capacitance true.
Frequently Asked Questions
Will pump 243183 fit my Magnum X7?
Yes—stroke identical; install ProConnect door 17A226 for 60-s swaps.
Max hose length with 0.035″ tip?
200 ft: ⅜″ BlueMax first 150 ft, ¼″ whip last 50 ft; hold 3 000 psi.
Spray solvent urethane?
Packings solvent-rated; flush xylene then Pump Armor™.
Ready to Trade Downtime for Billable Gallons?
Add an Endurance pump, Easy-Out filters, and LP tip combo to your cart now. We’ll ship —so tomorrow your DutyMax EH300 wakes up first pull, blasts flawless film-build, and keeps invoice totals climbing.