M-Series (Metallic DOC)

The Nett M-Series (Metallic) Diesel Oxidation Catalyst (DOC) is a maintenance-free catalytic converter for diesel engines, providing a balance of high HC, CO and particulate (SOF) conversion with low sulfate formation. Applications include off-road, on-road, power generation, marine, gantry crane and locomotive engines.

Performance

• Minimum about 180°C (360°F) required for conversion; CO conversion exceeds 90% above 250-300°C (480-570°F)
• Particulate matter reductions of 30-50%
• Prolonged exposure above 650°C (1200°F) may cause thermal degradation; low lube oil consumption and low-phosphorus oils extend catalyst life

Technical data – metallic substrates

• Cell density: 160 / 240 / 320 cpsi
• Wall thickness: 0.05 mm
• Geometric surface area: 19 / 23 / 26 cm2/cm3
• Open frontal area: 94 / 92 / 91%
• Bulk density: 0.43 / 0.53 / 0.59 g/cm3

Configurations

• Universal-fit converters, welded (compact) or clamped (removable centre-body)
• Direct-fit catalytic mufflers replacing the OEM muffler (database of over 10000 designs), in aluminised and stainless steels
• Options: add-on mufflers, custom heat-insulative blankets, OEM developments with EPA/CARB compliance certification support

DOC MD300 (EPA verified)

• Corrugated high-temperature stainless steel foil substrate coated with platinum group metals
• 90% CO, 80% HC and 20% PM reduction
• Verified for 4-cycle, constant speed compression ignition engines rated 100-750 hp (75-560 kW), Tier 1-3
• Stand-alone or silencer configurations; heavy-gauge mild, aluminised or stainless steel
• With a data logger for backpressure and exhaust temperature, compliant with EPA RICE NESHAP