Graco 288421 Contractor Airless Spray Gun
The Graco 288421 Contractor Airless Spray Gun is a rugged 2-finger gun for pro use, rated to 3600 psi with a standard 1/4" NPSM inlet and includes a RAC 5 517 tip & guard.
- Max pressure: 3600 psi
- Inlet thread: 1/4" NPSM
- Includes: RAC 5 517 tip + guard
- Fits most: Ultra 395/495/595, Ultra Max II 490–1595, ST Max, GMAX II 3900/5900/7900, Mark IV/V/VII/X
Overview & Key Benefits
The Graco 288421 Contractor Airless Spray Gun is a pro-grade, 2-finger gun designed for daily jobsite use. It ships with a RAC 5 517 SwitchTip & Guard, features a durable enclosed FlexSeal needle design for long life, and is rated to 3600 psi with a standard 1/4" NPSM inlet.
Compatible Machines
Works with most Graco professional airless sprayers that use a 1/4" gun connection and operate at ≤3600 psi. Popular families include:
- Ultra 395 / 495 / 595 (electric)
- Ultra Max II 490 / 495 / 595 / 695 / 795 / 1095 / 1595 (electric)
- ST Max series (electric)
- GMAX II 3900 / 5900 / 7900 (gas)
- Mark IV / V / VII / X ProContractor (texture/paint, ≤3300 psi)
Fit-check rule of thumb: if your sprayer’s max pressure is ≤ 3600 psi and the hose/gun thread is 1/4" NPSM, this gun will fit.
Key Specifications
| Part Number | 288421 |
|---|---|
| Gun Series | Contractor (airless) |
| Max Fluid Pressure | 3600 psi (24.8 MPa) |
| Inlet | 1/4" NPSM with EasyGlide-style swivel |
| Trigger | 2-finger, locking safety |
| Included Tip & Guard | RAC 5 517 SwitchTip + HandTite Guard |
| Filter | Internal gun filter (Easy Out style) |
| Approx. Weight | ~22 oz (gun only) |
What’s Included
- Contractor Airless Spray Gun (2-finger)
- RAC 5 517 SwitchTip
- HandTite RAC 5 tip guard
- Internal gun filter installed
Notes & Fit Guidance
- Use with standard airless hoses and sprayers rated ≤ 3600 psi.
- Verify your hose end is 1/4" NPSM (most pro Graco rigs are).
- For heavy-texture rigs running >3300 psi, confirm operating pressure before use.
Frequently Asked Questions
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