MASTER is a range of high efficiency gravity filters, using non-woven fabric as filter media. Master series is available in 4 models, able to manage flowrates from 200 to 1000 l/min of neat oil and from 400 to 2000 l/min of water based emulsion, contaminated by metallic or non-metallic particles. Master’s operation is simple and its efficiency is stable and constant. This type of filter is suitable for cooling and lubricant liquids used in many industrial processes, such as: drawing, milling, polishing, grinding and washing amongst others.

Working principles

  • The filtering tissue, stretched inside the filter, is perfectly clean. The dirty liquid enters in the system and has to pass through it to go to the lower tank, thus depositing pollutant particles on its surface. The clean liquid goes through the lower part where the discharge opening is located and falls into the tank underneath. During this phase the system is idle and the carpet is not advancing; pollutant which is deposited on the filter fabric forms the actual filtering layer, which in many applications can reach a thickness of 10 mm.
  • The dirty filter tissue permeability is reduced, because the dirty liquid continues to deposit the pollutant onto its surface, and the coolant level starts increasing. The filtration degree improves due to the thickness of the mud deposited on the filter tissue. During this phase the system is idle.
  • The liquid has reached its maximum level, at this stage the best possible filtration degree is actually reached. The longer the filter operates in this condition, the better the average filtration will be. The system is idle also in this phase. 
  • When the tissue is totally obstructed and the liquid cannot pass through it anymore, the regeneration cycle begins. Motor reducer allow the system to rotate and moves the dirty filter tissue, while the clean one is introduced and permeability restored, allowing for the level to descend and return to intermediate condition 2.


dmd optional

Pre-filtration system with rotating magnetic discs for the separation of magnetic polluting particles from coolant.

skim optional

Superficial oil skimmer, it allows to lengthen coolant quality and eliminate odors generated by anaerobic bacteria.