Vacuum Nano-Screening Integrated Machine (VOP-N Series)

What it removes

This is the machine that gets oil to NAS 2. Beyond water and gas, it removes the sub-micron particulate and the soft contaminants -- varnish precursors, resinous deposits, colloidal wear debris -- that conventional depth media passes through. NAS 2 is roughly two orders of magnitude cleaner than the NAS 6 that a standard vacuum purifier delivers, and it is the cleanliness band that servo valves, EHC governing systems and precision spindles actually require.

How it works

Vacuum dehydration removes the water and gas; a nano-screening membrane then removes the particulate the vacuum stage cannot. The membrane is the part that makes NAS 2 reachable: mechanical depth filtration runs out of resolution in the sub-micron range, while the membrane separates on a different principle and keeps its efficiency as the loading rises. Integrating the two in one frame matters because oil that has just been dehydrated is the right oil to put through a membrane -- it carries no free water to blind the surface.

Where it is used

Wherever a varnish or a sticking valve has already caused a trip. A captive power station whose phosphate-ester fluid was laying down varnish is the reference case. A crankshaft manufacturer whose hydraulic station sat far above its contamination limit and an appliance plant changing out vacuum pump oil repeatedly are the other two patterns: the oil was not worn out, it was dirty below the resolution of the filters in place.

Options and service

Skid-mounted with the membrane module accessible for change-out. On-line particle counting on the outlet so the result is measured, not assumed. Membrane life is application-dependent, so element consumption is quoted against the customer's target cleanliness rather than as a flat number.