Using the wrong spray tip often leads to streaks, wasted paint, and a pump working harder than needed, making it a costly yet common mistake in spraying work. The spray tip controls spray pattern width, paint flow rate, and atomisation quality, directly impacting finish performance. This guide covers applications from interior coatings to heavy industrial mastics in Saudi Arabia’s oil & gas and construction sectors. With 15+ years supplying Graco equipment, AEMCO provides practical guidance on airless paint sprayer tip size for accurate selection. It also explains how to choose a spray tip based on coating type, surface, and application needs for consistent results.
Why the Right Spray Tip Size Matters More Than You Think
Spray tips influence more than finish quality, as they directly affect pump wear, overspray, paint consumption, and overall project speed. A tip that is too large forces excess paint flow, causing runs, sags, material waste, and added strain on the pump, pushing it beyond capacity. A tip that is too small leads to poor atomisation, uneven coverage, tailing at fan edges, and reduced productivity. Incorrect sizing can cost significantly per hour in wasted paint and delays. In industrial coatings, it may cause full rework, making correct selection essential for achieving proper dry film thickness requirements.
Decoding the 3-Digit Tip Number: What Each Digit Means
Every airless spray tip, including Graco and most major brands, uses a three-digit code that defines fan width and orifice size. This three-digit system forms the foundation of correct tip selection.
• The first digit, multiplied by two, gives the fan width in inches when sprayed at 12 inches (30 cm) from the surface. For example, 5 produces a 10-inch fan, 3 produces a 6-inch fan, and 7 produces a 14-inch fan.
• The last two digits represent the orifice size in thousandths of an inch. This controls paint flow for thin or thick coatings.
For example, a 515 tip suits walls, a 517 increases flow, and a 315 suits detailed work.
The Two Variables That Determine Your Tip Size
Choosing the correct tip size depends on coating viscosity and surface application.
• Thin coatings such as stains, lacquers, varnishes, and sealers require small orifices of 0.009″–0.013″.
• Medium coatings such as enamels and primers typically use 0.013″–0.017″.
• Higher-viscosity materials such as latex and fillers generally require 0.015″–0.021″.
• Heavy coatings such as elastomeric and bitumen require 0.021″–0.035″+.
Always verify with the coating manufacturer’s Technical Data Sheet (TDS).
Surface size also matters:
• Large surfaces use wider fans (10–14 inches) with 5xx–7xx tips.
• Medium surfaces use 4xx–5xx.
• Narrow areas use 2xx–3xx.
• Fine finishing often uses FFLP tips (see the Graco tip types section below), while industrial work may require XHD tips.
Airless Spray Tip Size Chart by Coating Type
The table below serves as a practical reference for selecting tip size based on coating type, orifice range, and fan width, using a standard 8–12 inch fan measured at 12 inches (30 cm) from the surface. Premium latex may need a smaller orifice, high-solid coatings require GPM (gallons per minute) checks, and heat affects viscosity. Always verify with the coating manufacturer’s TDS and refer to AEMCO sprayer guidance.
Airless Spray Tip Size Chart
| Coating Type | Orifice Size | Tip Code Range | Fan Width |
| Stains / Lacquers / Water Sealers | 0.009″ – 0.013″ | 209 – 413 | 4″ – 8″ |
| Enamels / Oil-Based Paints | 0.013″ – 0.015″ | 413 – 515 | 6″ – 10″ |
| Latex / Interior Wall Paint | 0.015″ – 0.019″ | 415 – 519 | 8″ – 12″ |
| Primers / Exterior Paint | 0.017″ – 0.021″ | 517 – 521 | 10″ – 14″ |
| Elastomeric / Thick Coatings | 0.021″ – 0.025″ | 521 – 525 | 10″ – 12″ |
| Heavy Industrial (Mastics, Bitumen, Fireproofing) | 0.025″ – 0.035″+ | 525 – 535+ | 10″ – 14″ |
How Your Sprayer’s GPM Rating Limits Your Tip Choice
Selecting the right tip code is only half the equation your sprayer’s pump capacity must also be able to support it. GPM defines pump flow output and directly limits usable tip size. Exceeding this limit causes poor atomisation, pressure loss, and premature wear. A larger orifice increases paint flow volume, making correct GPM alignment essential.
For example, a sprayer with a maximum recommended tip size of 0.021″ should not be paired with a 0.023″ tip. Professionals often select one size smaller (such as 0.019″) to allow for wear expansion over time.
In multi-gun setups, the combined tip load must stay within the sprayer’s limits. AEMCO guidance helps ensure accurate tip and sprayer selection.
Graco RAC Spray Tip Types: Which One Is Right for Your Job?
Graco uses a colour-coded system to define tip series. Selection affects pressure, atomisation, and coating suitability.
• RAC X: The RAC X offers a wide range of sizes, reversible clog clearing, and compatibility with most sprayers. Suitable for latex, primers, and architectural coatings.
• FFLP: Operates at up to 50% lower pressure, improving finish quality and reducing overspray. Available in orifice sizes from 0.008″ to 0.016″, making it ideal for lacquers, stains, enamels, and fine work such as cabinets, trim, doors, and furniture. Not suitable for heavy coatings.
• XHD: Designed for thick materials in industrial applications such as pipelines and tanks. Identifiable by their oversized grey handle for easy rotation even with heavy coatings such as elastomeric and texture.
• WideRAC: Creates a wider fan of up to 24 inches, increasing coverage but requiring higher GPM capacity. Also available in a low-pressure version (WRLP) with 24–26 inch fan patterns for high-production jobs.
Signs Your Spray Tip Is Worn And the Real Cost of Ignoring It
Spray tip wear is gradual and often unnoticed. As the orifice enlarges, more paint flows per pass while the fan width narrows. This can cause heavier coating, runs, and material waste — a worn tip causes on average 25% more paint consumption and 20% additional labour time per pass.
Warning signs include:
• Tailing (streaks at fan edges)
• Uneven coverage
• Increased pressure requirement
• Visible streaks
Most tips last approximately 300–600 litres (roughly 80–160 gallons), depending on material abrasiveness and frequency of use. Highly abrasive coatings such as elastomeric will wear tips far faster than standard latex. Replacing worn tips on time helps avoid rework and excess paint usage.
5 Common Spray Tip Selection Mistakes (And How to Avoid Them)
• Using the wrong orifice size: Always match tip size to coating viscosity and check the TDS.
• Ignoring sprayer limits: Exceeding your sprayer’s maximum tip size rating causes pressure loss and equipment wear.
• Using wide fans on narrow surfaces: This wastes significant amounts of paint per pass and reduces accuracy.
• Ignoring tip wear: Worn tips reduce efficiency, increase paint consumption, and raise labour costs.
• Skipping TDS guidance: Manufacturer recommendations are critical for accuracy, particularly for high-solids and industrial coatings.
Frequently Asked Questions
What spray tip size should I use for latex paint?
For standard latex wall paint, tip sizes in the 415–519 range work well. A 515 or 517 tip is the most commonly used for interior walls, providing a 10-inch fan with a 0.015″ or 0.017″ orifice.
How do I read a 3-digit spray tip number?
The first digit × 2 = fan width in inches when spraying at 12 inches (30 cm) from the surface. The last two digits = orifice size in thousandths of an inch. Example: a 515 tip = 10-inch fan, 0.015-inch orifice.
What happens if I use the wrong spray tip size?
Using too large a tip causes paint runs and pump overload. Too small a tip causes poor atomisation and slow coverage. Both result in wasted paint and a lower-quality finish.
How do I know when my spray tip needs replacing?
Watch for tailing (streaks at fan edges), uneven coverage, or needing to increase pressure. Most tips last 300–600 litres depending on material abrasiveness. Highly abrasive coatings will shorten this considerably.
Where can I buy genuine Graco spray tips in Saudi Arabia?
AEMCO is Graco’s authorised distributor in Saudi Arabia, with offices in Riyadh, Dammam, and Jeddah. Contact our team for the full RAC tip range, expert selection advice, and product availability.
Conclusion: Choose the Right Tip, Every Time
Choosing the correct airless paint sprayer tip size starts with identifying coating viscosity, matching fan width to surface size, and confirming compatibility with your sprayer’s GPM rating. Graco RAC tips from RAC X to XHD and WideRAC support applications from residential painting to large-scale industrial and petrochemical projects, and the same sprayer can perform very differently depending on the tip selected. Choosing the right tip is as important as choosing the right sprayer.
With 15+ years of experience, AEMCO provides expert guidance, helping contractors achieve reliable results with genuine tips and complete equipment support. Contact AEMCO now for genuine Graco solutions and expert consultation backed by proven field experience that ensures every project delivers consistent, high-quality results.