The Alfdex Defender is a maintenance-free oil mist separator that efficiently cleans crankcase gases in diesel and gas engines. With its patented disc stack technology, it reliably removes oil droplets and soot particles, returns the oil to the oil pan, and thus protects the engine and attachments.
Features:
Cleaning efficiency > 98%
Protects turbochargers and intercoolers from deposits
“Fit & Forget” – no maintenance or filter changes necessary
Reduces oil consumption by returning the separated oil
Suitable for open (OCV) and closed (CCV) crankcase ventilation
Robust aluminum construction – suitable for marine, off-road, military, and railway applications
Key technical data:
Nominal blow-by volume flow:
300 l/min (max. 500 l/min)
Oil content in blow-by:
max. 40 g/h
Operating temperatures:
Blow-by gas up to 110 °C
Oil up to 140 °C
Environment:
–40 °C to +140 °C
Oil supply:
3.5–6 bar, min. 600 l/h
Service life:
Approx. 20,000 operating hours, maintenance-free
Max. angle of inclination:
30°
Special features:
- Integrated pressure control valve for stable crankcase pressures
- No external power supply required – driven by engine oil pressure
- Easy installation with retaining bracket, flexible alignment of connections
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