BU Series

Triple R Oil Cleaner - Excellence in Oil Filtration


  • Very compact and light bypass oil cleaners.
  • Connects directly to the high pressure line. No motor and pump necessary.
  • Designed for hydraulic systems up to 350 bar system pressure.
  • All BU bypass filters are fitted with M-series 3μ absolute filter elements (beta ratio ß2 >400).
  • With built in pressure and flow control valve, safety valve and pressure gauge for checking element change.
  • Low running cost, easy installation & maintenance.
  • Also available for water glycol fluids; with coated housing and WG element.

Typical applications

  • Injection moulding machines.
  • Die-casting machines, metal working machines, like bending-, cutting-, punching machines.
  • Mobile hydraulic equipment.
  • All hydraulic systems with continuous pressure and fitted with proportional or servo-valves, and other high-tech hydraulic equipment.


  • Prevents trouble to the hydraulic equipments.
  • Improves machine reliability and productivity.
  • Longer life of all hydraulic components, pumps, servo-valves and other equipment.
  • Extends oil life by up to 40.000 hrs.
  • Very important reduction of oil consumption and the resulting waste oil.
  • Discharges the full flow filters and extends their life.
  • Important reduction of maintenance costs.

Click the links to See the following Attachment:

Technical specifications
(Water glycol model : BU100EW/BU200EW/BU300EW)

Model BU30E BU100E BU200E BU300E BU100EW BU200EW BU300EW
Article nr. TR-19450 TR-19530 TR-19200 TR-19320 TR-19550 TR-19100 TR-19700
Flow rate 1,0 l/m 2,0 l/m 4,0 l/m 6,0 l/m 1,5 l/m 3,0 l/m 4,0 l/m
Pressure Flow rates are guaranteed from 10 bar to 350 bar system pressure
Thread In/Out 1/4″ x 1/4″
1/4″ x 3/8″
1/4″ x 1/4″
1/2″ x 1/2″
1/4″ x 3/8″
1/4″ x 1/4″
1/2″ x 1/2″
Element type 30 size,
M – E – X
100 size, Model M – E – X – D – WE WG100 – DWG100
Nr. of elements 1 1 2 3 1 2 3
Max pressure Relief valve opens at 4,5 bar ΔP
Weight kg 2,5 6,5 8,0 12,0 6,5 8,0 12,0
Dimension mm 140 x 120 x 290 230 x 170 x 320 240 x 240 x 410 240 x 240 x 770 230 x 170 x 320 240 x 240 x 410 240 x 240 x 770
Material die casted aluminum stainless steel coated stainless steel

Oil cleaner model selection chart

Model Liter 300 Lit 450 Lit 600 Lit 1200 Lit 1800 Lit 300 Lit 600 Lit 800
BU30E stard
BU100E starl starl stard
BU200E starl starl starl stard
BU300E starl starl starl stard
BU100EW stard
BU200EW starl stard
BU300EW starl starl stard

Connecting to the high pressure line.

Please consult our installation instructions before connecting the BU-filters to the high pressure line.

The BU200 and BU300 come with an external kit including a flow control valve, the pressure gauge andan air vent.

The relief valve is fitted inside the housing.

* All circumstance should be considered before selecting a suitable oil cleaner and flow control valve.

Please consult with your distributor for model detail.



Cut operation costs by keeping lubricating oils and hydraulic fluids free of contaminants

Keep the liquid clean in the war of friction

70% of failures in hydraulic equipments is because of contamination