WIWA 250 D Airless Spray Gun – Control, Pressure Stability & Ergonomic Working
The WIWA 250 D Airless Spray Gun is designed for professional coating tasks with high quality requirements. With a maximum working pressure of up to 300 bar (≈ 4350 psi, guide value according to manufacturer specifications), it is suitable for fine painting work as well as for larger surfaces. In this practical guide, you will learn which variant makes sense for your application, which basic settings have proven effective, and how to avoid typical errors.
Product Overview & Variants
| Feature | WIWA 250 D |
|---|---|
| Max. Working Pressure | approx. 300 bar / 4350 psi (guide value) |
| Application Area | Sprayable media, lacquers & coating materials |
| Trigger | Soft two-finger trigger |
| Connection Variants | Without swivel / with 1/4" NPSM / with 3/8" NPSM |
The version without a swivel is compact and robust. Variants with a 1/4" or 3/8" NPSM swivel increase hose mobility and reduce torsional forces on the wrist and connection.
Suitable for high atomization quality in airless applications.
Enables controlled, fatigue-free working.
Flexibly combinable with standard airless systems.
Select the right WIWA 250 D variant now
Recommended Basic Settings (Guide Values)
- Working pressure: material-dependent, typical range 120–250 bar
- Nozzle size: matched to viscosity & desired layer thickness
- Filter insert: choose according to nozzle size
- Spray distance: approx. 20–30 cm from the surface
Note: These values are guide values and must be adjusted depending on the material, temperature, and system configuration.
Professional Workflow in 6 Steps
- Prepare and filter the material.
- Assemble the system without pressure, check nozzle & filter.
- Increase pressure slowly until a clean spray pattern is achieved.
- Spray a test area and check the fan pattern.
- Work in cross-coats, maintaining a consistent distance.
- After finishing work, relieve pressure and clean the gun.
Troubleshooting – Typical Problems
- Streaking: Increase pressure or check nozzle.
- Poor spray pattern: Clean or replace filter.
- Material dripping: Check nozzle seat and needle.
- High physical effort: Use a swivel or optimize hose routing.
Maintenance & Care
- Clean thoroughly after each use.
- Check seals regularly.
- Keep filter inserts clean.
- Check swivel for smooth operation.
- Replace wearing parts in good time.
FAQ for WIWA 250 D
1. What materials is the 250 D suitable for?
For sprayable coating materials using the airless process.
2. Is 300 bar always necessary?
No, the pressure should only be set as high as necessary.
3. When is a swivel worth it?
When changing positions frequently or with long hose lengths.
4. Which nozzle fits?
Depends on the material and desired layer thickness.
5. How often does it need to be cleaned?
After every use, to avoid blockages and wear.
Conclusion
The WIWA 250 D is a robust and versatile airless spray gun for professional applications up to 300 bar. With the right connection variant and correctly set parameters, you will achieve uniform surfaces and reduce downtime. For maximum performance, regular maintenance and material-appropriate pressure adjustment are recommended.
