

The Graco ARV421 Tip, 421 Rev‑Tip Seal provides smooth reversible spraying with easy clog clearing for medium to heavy coatings.
The Graco ARV421 Tip, 421 Rev‑Tip Seal is a reversible airless spray tip with a 0.021″ orifice and an 8–10″ fan pattern. Its Reverse‑A‑Clean design allows you to easily flip the tip in place to clear clogs without tools, reducing downtime and maintaining a consistent spray pattern for a variety of coatings such as latex paints, lacquers, and mastics. :contentReference[oaicite:1]{index=1}
| Part Number | ARV421 / RAC 421 |
|---|---|
| Tip Orifice Size | 0.021 inch |
| Fan Width | 8–10 inches |
| Tip Type | Reversible Spray Tip (Reverse‑A‑Clean) |
| Compatible Guard Type | RAC, RAC X or RAC 5 HandTite Tip Guards |
“Rev‑Tip Seal” refers to a reversible spray tip with an integrated seal that helps prevent leaks and lets you flip the tip to clear clogs without removing it from the spray guard. :contentReference[oaicite:7]{index=7}
This tip fits most airless sprayers that accept standard RAC, RAC X, or RAC 5 HandTite Tip Guards (7/8″ guard thread). Always check your sprayer manual before installation. :contentReference[oaicite:8]{index=8}
A 0.021″ reversible tip like the 421 works well with materials such as lacquers, latex paints, stains, and mastics, giving a consistent spray pattern for residential and commercial applications. :contentReference[oaicite:9]{index=9}
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