Graco RAC X Heavy Duty Airless Spray Tip (HDA)

SKU: HDA427
GTIN / Barcode: 633955313972
Regular price £31.50 Inc VAT
Sale price £31.50 Inc VAT Regular price
£26.25 Exc VAT
Graco RAC X HDA (Heavy Duty Atomisation) tips are for thicker, abrasive coatings needing higher pressure, such as airless plaster and high-build materials. Built for high production, they deliver a consistent pattern and fewer stoppages. Raised size numbers aid selection, the locking tab secures the tip, and RAC reverse clears clogs fast. OneSeal fits tool-free, with a solvent seal option for hot solvents. Read More

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Product Features


Built for high-build coatings: Graco RAC X HDA airless spray tips are designed for thicker, less fluid and more abrasive coatings, including airless plaster and high-build materials that need higher pressure to atomise properly.


Easy to use on demanding jobs: Large raised tip numbers, a secure locking tab and tool-free OneSeal gasket make these Graco airless spray tips practical, reliable and easy to work with on busy trade sites.


Consistent finish with less downtime: A clean, consistent spray pattern helps decorators achieve a better finish, while the reverse-to-clear design makes it quick to deal with blockages and keep the job moving.

Brand Graco
Type Spray Accessories
Suitable For Designed for spraying coatings requiring higher atomisation pressure
Key Features Offer enhanced durability and performance, making them ideal for professional use in challenging conditions
Weight 0.05 kg
SKU HDA427
GTIN / Barcode 633955313972

Product Description

Graco RAC X HAD Airless Spray Tips

Are built for spraying thicker, less fluid and more abrasive coatings that need higher pressure to atomise properly – including airless plaster, high-build materials and demanding interior/exterior applications. If you’re chasing high production, reduced downtime and a consistently clean finish, HDA tips are a proven upgrade.

Key benefits:

  • High-quality finish, job after job – consistent spray pattern for a cleaner result.
  • Designed for high-pressure work – ideal for coatings that need extra atomisation.
  • Easy tip size identification – large, raised numbers stay readable even when covered in paint.
  • Secure fit in the guard – locking tab helps keep the tip firmly in place.
  • Fast switch between spray and reverse – snaps confidently into position to clear blockages quickly.
  • Tool-free OneSeal gasket – installs easily with no tools.
  • Solvent seal option available – for use with extremely hot solvents (where required).

Why choosing the right airless spray tip matters:

The spray tip has a direct impact on finish quality, speed and material usage. The wrong tip can increase overspray, waste paint, slow your progress and push your sprayer harder than necessary. The right tip helps you:

  • Reduce overspray.
  • Improve control and finish.
  • Work faster.
  • Use less paint.
  • Protect your sprayer.
  • Increase profit per job.

How airless tips work (simple explanation):

An airless sprayer pressurises the coating and forces it through the tip’s tiny orifice at high pressure (often up to 3,000 psi, depending on the system). This creates a controlled fan pattern, similar to putting your thumb over a garden hose to change the spray.

Your sprayer controls:

  • Flow.
  • Pressure.

Your tip controls:

  • Fan angle (spray width).
  • Orifice size (volume of material).

The tip you choose also affects how hard the pump must work to hold pressure, especially with thicker materials.

How to read tip sizes (fan width + orifice):

Fan width (first digit):

The first number indicates the spray angle. For example, a “5” = 50°. At roughly 12 inches from the surface, fan width is approximately:

5 × 2 = 10 inch fan width.

Orifice size (last two digits):

The last two digits show the orifice size. For example, “17” = 0.017 inch (0.43 mm).

Your actual output depends on:

  • Pressure (higher pressure = more flow).
  • Coating viscosity (thicker coatings = less flow).

Important: Never exceed your sprayer’s maximum recommended tip size.

Tip wear: the hidden cost that kills performance:

Airless tips wear over time, especially with abrasive materials and higher working pressures. A worn tip doesn’t just affect finish; it can quietly increase paint usage and labour time.

Think of it like a worn drill bit in concrete: it works slower, needs more effort, and the result looks worse. Spraying with a worn tip can also push your machine beyond its output limits.

Replacing tips on time often costs far less than the extra labour + wasted paint caused by a worn tip.

Frequently Asked Questions

What are Graco RAC X HDA tips used for?
HDA tips are designed for heavy-duty spraying of thicker and more abrasive coatings that require higher pressure to atomise properly, including airless plaster and high-build materials.
What’s the key benefit of “Heavy Duty Atomisation”?
It’s optimised for high-pressure work, helping deliver a more consistent fan pattern and cleaner finish when standard tips struggle with thicker coatings.
How do I read the tip size numbers (e.g., 517)?
The first digit indicates spray angle (5 = 50°). At ~12 inches from the surface, fan width is approx. digit × 2 (5 ? ~10 inch). The last two digits are the orifice size in thousandths of an inch (17 = 0.017").
Why does choosing the correct tip matter for profit?
The right tip can reduce overspray, improve control, speed up application, cut paint usage and protect your sprayer. The wrong tip can waste material, slow you down and push the pump harder than necessary.
When should I replace an airless tip?
Tips wear faster with abrasive materials and higher pressures. A worn tip can increase paint usage and labour time and may push your sprayer towards its output limits. Replacing in time is usually cheaper than wasted paint and extra hours.

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