Neptune Oil Dehydrator Unit NDU-4NX: 100 L/MIN (6,000 L/HR)

Neptune Oil Dehydrator Unit NDU-4NX: 100 L/MIN (6,000 L/HR)

The NDU-4NX is the largest Neptune in the range having 4x double length filter housings,  increased flow rate and increased dirt holding and water absorption capabilities.

With a flow rate of 100 L/min (6,000 L/hr) and the added capacity of 4 x filtasorb2 double length elements the NDU-4NX has the ability to remove both free and entrained water down to under 100ppm.  All Neptune units are capable of continuous operation and the NDU-4NX is no exception.

Should on-site verification of cleanliness and water content levels be required, practical quick connect fittings allow for instant plug-in to the Particle Pal, allowing real time results of ISO/NAS/SAE cleanliness codes and water content  in a matter of minutes.

Filtertechnik’s NDU-NX range is the perfect solution to quickly and cost effectively remove both free & entrained water in oils.

Range overview:

NDU-1NX: 15L/min (900L/hr)
NDU-2NX: 25L/min (1,500L/hr)
NDU-3NX: 50L/min (3,000L/hr)
NDU-4NX: 100L/min (6,000L/hr)


  • 4 x High Performance Filtasorb2 inserts to achieve 100ppm or better 
  • Transportable - perfect for plant use
  • Up to 100 L/min flow rate (6,000L/hr)
  • High volume dirt holding capacity to deliver ISO cleanliness codes of 18/16/13
  • Rugged frame with integral drip tray
  • All terrain castor wheels for ease of manoeuvre
  • Uses standard 110 V or 240 V mains electric


  • Rapidly remove both free and entrained water from large volumes of oil
  • Low cost replacement filter cells
  • Compact footprint and easy to transport
  • Single pass cleanliness