Practical Guide
SR Nozzles of the SATAminijet 4400 B: Perfect Transitions Without Visible Edges
The “SR” nozzles (Spot Repair) make the difference when it comes to seamless transitions. Here you’ll learn which sizes make sense for which job – with clear reference values and pro tips.
Why SR Nozzles?
- Special spray pattern with a “soft” edge zone for invisible transitions.
- Ideal for small repairs such as stone chips, edges, or partial refinishing.
- Reduces sanding and polishing work after painting.
SR Nozzle Sizes at a Glance
| Nozzle Size | Application | Advantages |
|---|---|---|
| 0.8 SR | Finest spot repairs, small scratches & edges | Very fine spray pattern, minimal material use |
| 1.0 SR | Small areas & fade-out blending | Good compromise between material output & control |
| 1.2 SR | Basecoats, spot repair with well-defined blending | Faster application, uniform coverage |
| 1.4 SR | Clearcoat applications in spot repair | Rich flow, even gloss |
Note: Selection depends on paint type, viscosity & desired finish. Reference values from manual & practice.
Spray Distance
SR nozzles: usually 12–15 cm for HVLP, 12–19 cm for RP.
Pressure
Recommended for spot repair: 0.5–2.0 bar (depending on material & nozzle size).
Maximum Pressure
Do not exceed 10 bar at the gun inlet.
Tip: For clearcoat in spot repair, the 1.2 SR or 1.4 SR is often recommended. For basecoat or blending, go with 1.0 SR.
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Workflow with SR Nozzles (5 Steps)
- Select the nozzle according to the material (Base: 1.0–1.2 SR, Clearcoat: 1.2–1.4 SR).
- Adjust the pressure (starting point 1.5 bar, then check spray pattern).
- Maintain spray distance: consistently 12–15 cm (HVLP) or 12–19 cm (RP).
- Apply paint in thin, overlapping passes, blend out edge areas.
- Check transitions, if necessary, apply a second soft blending pass.
Conclusion
The SR nozzles make the SATAminijet 4400 B the first choice for spot repair. With the right size, you’ll achieve a smooth transition that remains invisible after polishing – true OEM quality on a miniature scale.
