Why use an oil purifier instead of only equipment filters?
Many hydraulic systems rely only on built-in small filter elements. However, this has inherent limitations:
Built-in filters have limited dirt holding capacity
- Small size
- Limited filtration area
- Easily clogged
Hydraulic shock reduces real filtration accuracy
When equipment reverses direction, hydraulic shock can dislodge captured particles and reduce effective filtration efficiency.
Oil cleanliness at delivery is often insufficient
- New oil: NAS 9–12
- Heavy industry: NAS 5–8
- Power plant EH: NAS ≤4
Bypass filtration is more stable
Oil purifiers have independent pump systems with stable pressure, larger filtration area and better particle adhesion.
SINFT oil purifier product range
SINFT offers a complete range of oil purification equipment
Series 01
Portable oil purifier series
MFA Basic portable unit
MFB Two-stage filtration
MFD With particle counter
MFX Box-type integrated unit
Applications
Series 02
Coalescing & water removal systems
MFE Coalescing separation unit
MRW Hydraulic water removal device
MFL Membrane stack filtration
Used for
Series 03
Vacuum oil filters
ZJA Two-stage high vacuum
ZJB High-efficiency vacuum
ZJC Lubricating oil vacuum unit
Principle
Lower pressure reduces boiling point → water vaporizes → vacuum pump removes moisture.
Suitable for
Series 04
EH hydraulic oil regeneration systems
MFZ EH system bypass regeneration
MFJ Submicron filtration & dehydration
MFK Ion trap submicron filtration
Functions
- Reduce acid value
- Improve oil resistivity
- Remove metal ions
- Reduce MPC (varnish tendency)
Designed specifically for phosphate ester fluids.
Series 05
For oil with excessive solid contamination
Melt-blown filters
High dirt-holding cartridges
Multi-stage filtration
Used for
Oil type selection guide
Low viscosity oil
≤160 cSt- Standard oil purifier
- 1.1 kW motor typical
High viscosity oil
>160 cSt- Special high-viscosity pump
- 2.2 kW or above motor
- Enlarged filtration area
- Optional heating system
Phosphate ester
EH oilSpecial requirements:
- Stainless steel piping
- Viton seals
- Anti-corrosion materials
SINFT EH systems reduce acid value, control resistivity, remove moisture and improve oil stability.
Water glycol fluids
- Avoid zinc-plated components
- Compatible seal materials required
Why choose SINFT oil purifiers?
In-house manufacturing
- Structural fabrication
- Pump integration
- Electrical control systems
- Filter element production
ISO testing capability
- Collapse/Burst (ISO 2941)
- Flow vs Pressure Drop (ISO 3968)
- Fluid Compatibility (ISO 2943)
- Flow Fatigue (ISO 3724)
- Fabrication Integrity (ISO 2942)
Customized engineering
- Flow rate customization
- Oil type adaptation
- Heating system integration
- Online monitoring modules
Long service life
5+ Years typical
Power plant
Power plant
HD Heavy-duty
design available
design available
Industry applications
