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Graco 288451 Conventional Air Cap Kit

Graco 288451 Conventional Air Cap Kit is a replacement air cap designed to restore proper atomisation and spray pattern on Graco conventional air spray guns.

  • Part Number: 288451
  • Type: Conventional Air Cap
  • Function: Controls airflow and spray fan shape
  • Application: Industrial and professional finishing
  • Use: Replaces worn or damaged air caps for consistent results

$165.93
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Compatible Spray Guns

The Graco 288451 Conventional Air Cap Kit is used on select Graco conventional air spray gun setups.

  • Graco RAZOR Gravity Feed Spray Gun (Conventional setup)
  • Graco RAZOR Pressure Feed Spray Gun (Conventional setup)

What this kit does

The Conventional air cap is a front-end spray gun component that shapes airflow to atomise coatings and form a consistent spray pattern. Replacing a worn air cap can help restore pattern symmetry, reduce spitting, and improve finish consistency.

Common reasons to replace

  • Uneven or “heavy-edge” spray pattern
  • Excessive build-up on the air cap horns
  • Physical damage from drops or aggressive cleaning

Product details

Brand Graco
Part Number 288451
Part Type Air Cap Kit
Spray Technology Conventional
Use Controls atomising air and spray pattern formation

Installation notes

  • Depressurise air and fluid supply before servicing the gun.
  • Clean mating surfaces and avoid overtightening to prevent distortion.
  • If the pattern is still inconsistent after replacement, inspect the fluid nozzle/needle and air passages.

Frequently Asked Questions

It shapes the atomising air stream, which affects pattern width, edge definition, and overall atomisation quality. A worn air cap can cause uneven fan shape and poor finish consistency.

This part is for conventional setups. HVLP and Compliant air caps are typically different designs and part numbers. Match the part number to your gun’s parts breakdown to confirm.

Common signs include a fan pattern that is lopsided, heavy on one edge, or “spitting,” as well as visible damage or persistent build-up that cannot be cleaned without affecting performance.

If performance does not improve, inspect the fluid nozzle/needle and any seals associated with the air cap area. Worn seals or a damaged nozzle can mimic air cap issues.

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