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Oil Filtration

Oil Filtration

In my earlier post, I had explained the parameters and specifications of clean oil. Clean oil & Lubricants are of utmost importance to any industry.

It keeps hydraulic systems particulate free, increases efficiency of the equipment and reduces downtime of production, increases lubricant’s life, the life of gears, bearings etc.

I had explained the parameters required to measure cleanliness of oil- NAS/ ISO so I shall not go into the details.

Case Study:

Our sales engineer received an enquiry where hydraulic oil was very dirty with lot of impurities. Normally unfiltered oil has a NAS value between 10-11. We gave a 4 stage filtration unit as follows-

  1. Prefiltration with bag filters- 5 micron nominal
  2. Prefiltration with cartridge filters- 5 micron absolute rated
  3. Fine filtration with cartridge filters- 4 micron absolute rated
  4. Final filtration with cartridge filters- 2 micron absolute rated

The main feature of our NAS oil filtration systems is that in a single pass we get the required NAS value. Also, we can custom design as per viscosity, flow rate, temperature etc. We have inline NAS checking facility. It’s a small compact system.

This filtration system gave absolute clarity with a NAS value of 5-7 and 2-3 to Gandhar Oil refinery and ONGC respectively. Please find their testimonials below. (Lower the NAS value, less number of particles in oil.) 

Gandhar Oil Refinery India Ltd - Testimonial

Features of our NAS oil filtration systems:

  • Skid or trolley mounted. Compact in design. Guaranteed NAS.
  • Viscosity to handle upto 200 CST @ 40°C
  • Single pass and multipass system.
  • 2/3 stage or multistage with multiple pre filtration ( for semi used oil)
  • In line NAS checking facility.( Optional)
  • Single point draining system as to minimize dead volume upto 2/3 %.
  • Colour coded Dp gauge with alarm as to know the time for filter change out.
  • In built dirty and clean tank, MOC of MS and SS.
  • Can be designed for flow rate of 10 LPM to 400 LPM.
  • Can be used as off line and in line filtration.
  • Customized design can also be provided.
  • MOC of gasket and “O” ring Silicon, Viton, EPDM, Neoprene, PTFE etc.
  • Surface finish- sand blasting, mechanical polishing, pickling and painting etc.
  • Option to have only filtration assembly or with skid, pump, pipe line, valves and fittings etc.
  • Suitable to achieve NAS-6 and better from NAS-20 (as per particle count)
  • Small compact system for Barrel to Barrel filtration to acheive NAS

ONGC Uran - Testimonial