The Ultimate Guide to Choosing the Right Nozzle Size (1.2mm, 1.3mm, 1.4mm & 1.8mm+)

From 1.2mm for ultra-fine clears to 1.4mm all-rounders, and 1.8mm upwards for primers. Learn exactly which nozzle setup to pair with your paint.

1.2mm: Precision & Thin Clears

The 1.2mm nozzle is designed for ultra-fine atomization of thin materials. It is the perfect choice for light clear coats, precise spot repairs, and detail work where you need ultimate control to avoid runs or heavy build-up.

1.3mm: The Gold Standard for Base & Clear

If you are spraying automotive base coats and premium clear coats, the 1.3mm tip is the absolute industry standard. It provides the perfect balance of fluid delivery and fine atomization, giving you a mirror-like, flawless finish without orange peel.

1.4mm: The Versatile All-Rounder

A 1.4mm tip is slightly larger, making it excellent for single-stage paints, thicker base coats, and sealers. It lays down material faster than a 1.3mm, making it a great choice when you need solid coverage on larger panels.

1.8mm Upwards: Primers and Heavy Materials

For high-build primers, liquid body fillers, and thick industrial coatings, you must use a 1.8mm tip or larger (like 2.0mm). Heavy materials require a massive fluid passage to flow correctly. Trying to spray primer through a 1.3mm or 1.4mm tip will instantly clog the gun and ruin your finish.

Key Takeaways

• • 1.2mm: Best for thin clear coats, detail work, and precise spot repairs.
• • 1.3mm: The ultimate standard for flawless base coats and mirror-like clear coats.
• • 1.4mm: A versatile all-rounder ideal for single-stage paints and thicker materials.
• • 1.8mm+: Essential for high-build primers to prevent clogging and ensure heavy coverage.

For more detailed technical specifications, always refer to the manual included with your Porphis equipment or reach out to our technical support team.