Stříkací pistole pro práškové lakování s tryskou 1,4 mm

The 1.4 mm nozzle is one of the most common sizes on spray guns thanks to its versatility. It reliably applies various types of coating – from primers and fillers to two-component 2K clearcoats or medium-viscosity topcoats. With a gun fitted with a 1.4 mm nozzle you achieve fine atomisation of the paint and an even coat on a range of surfaces. It is the ideal choice for professionals and demanding hobby painters looking for a single all-round spray gun for several purposes.

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Uses and strengths of the 1.4 mm nozzle

The 1.4 mm nozzle covers a wide spectrum of painting applications. It handles both base coats and medium-density finish coats. Specifically, it suits:

• Primers: Ideal for applying primers or base coats to various surfaces. In vehicle refinishing the 1.4 mm nozzle is used, for instance, for body primers – it creates an even base on the bodywork before the topcoat goes on.
• Fillers: It also sprays filler (levelling) paints, which are thicker. Thanks to a slightly larger diameter than fine nozzles, the 1.4 mm applies surfacer in a layer thick enough for sanding without the gun clogging (with the right thinning).
• Two-component 2K coatings: Perfect for acrylic or polyurethane 2K clearcoats. These two-component paints tend to have medium viscosity and the 1.4 mm nozzle atomises them so that a smooth, glossy surface is created. It suits topcoat clearcoats on car parts, metal structures and the like.
• Medium-viscosity topcoats: Whether it is topcoat enamels, acrylic paints or other medium-density coatings, the 1.4 mm nozzle provides an optimal combination of flow and fine mist. The result is a continuous covering layer without spattering and with a high-quality surface.

In summary: A 1.4 mm diameter is the all-round choice if you need one gun for primer, clearcoat and filler. Smaller nozzles might not handle thicker materials, while larger diameters may not give such a fine spread with thinner paints. The 1.4 mm nozzle gives you flexibility – you can spray everything from primer to a medium-viscosity topcoat with confidence in an even coat.

Examples from practice

• Body primers: Ideal for spraying primers onto car bodies before the topcoat. A gun with a 1.4 mm nozzle lays the primer evenly even on larger areas without forming droplets.
• Technical painting of machines and equipment: Industrial painting (machines, structures) often uses medium-viscosity 2K paints. The 1.4 mm nozzle allows precise application of these technical coatings, so the surface is durable and looks good.
• Priming larger areas: When priming extensive areas (sheet-metal gates, metal structures or wooden panels), you will appreciate the higher output of the 1.4 mm nozzle. The greater paint flow speeds the work up – primer covers the area faster than with a finer nozzle, which is practical on large projects.
• Applying thicker coatings: If you need to spray thicker clearcoats or high-solids coatings (heavy-duty protective coatings, for instance), the 1.4 mm nozzle will handle them (with the right pressure setting and thinning). A smaller 1.3 mm nozzle could clog more easily or would need higher pressure, whereas the 1.4 mm passes thicker material more smoothly.

Recommended pressure and comparison with other nozzles

Setting the working air pressure correctly is important for the best results. With a 1.4 mm nozzle you typically work at around 2 bar on HVLP guns (high volume, low pressure) and roughly 3 bar on conventional spray guns. It always depends on the specific gun model and the paint viscosity – we recommend following the manufacturer's figures. The right pressure ensures fine atomisation of the paint and at the same time enough flow for a smooth, flawless surface.

Advantages over the 1.3 mm nozzle: The 1.4 mm size has a slightly higher paint flow, which makes applying medium-viscosity and thicker materials easier. Compared with the 1.3 mm nozzle there is less risk of clogging when using filler or a thicker clearcoat, and the work proceeds faster (greater area output). The difference in atomisation fineness is minimal – you will achieve a very smooth surface with 1.4 mm too. For a painter this means greater versatility without having to change the nozzle when switching from clearcoat to primer or filler.

The 1.5 mm alternative: If you plan to apply genuinely heavy layers or extra-thick coatings frequently, a larger 1.5 mm nozzle may be the answer. It increases the paint flow further, so high-solids build primers or metallic flakes pass through more easily. Bear in mind, though, that with thinner paints the 1.5 mm could increase material consumption and create heavier mist. For ordinary priming and topcoating with medium and 2K paints, 1.4 mm is therefore often the more efficient choice – it offers the best ratio between output and spraying precision.

Further tips and summary

Spray guns with a 1.4 mm nozzle are among the most versatile tools in a paint shop. With one you will manage most painting jobs with a single piece of equipment. Our spray gun range includes a whole series of models fitted with a 1.4 mm nozzle – from affordable ones for tradespeople to top guns for professional paint shops. If you are unsure what to choose, read our detailed guide How to choose a spray gun for applying paint as well. The right choice of nozzle and gun will make your work easier and ensure a perfect painting result at the first attempt.