Large Contaminants Filtration Systems

Large Contaminants Filtration Systems

USPI Bag Stationary Inline Filtration systems (Model: 88 Bag series) are commonly used: in applications and on equipment that produces large contaminants. (88QB pictured at the left)

The addition of a Bag housing allows the unit to pre-filter the fluid, removing contaminants 10-200 microns in range before the depth filters remove contaminants down to 1 micron. Like other members of USPI’s stationary filtration systems, it is easy to operate (i.e. take an oil sample, monitor filter element life, change filter elements and drain canisters) and employs a simple approach to filtering that removes both solid contaminants and moisture from your fluids for longer equipment and fluid life.


  • Sturdy Metal Frame
  • Chrome Plated Filter Housing(s)
  • Stainless Steel Piping
  • Oil Sample Port
  • Flow Meter (sized to unit): 1-20 GPM
  • Pressure Gauges
  • Pump (sized by application):
    0.5 – 12 GPM
  • Motors (sized by application):
    0.3 – 1.5 HP
  • Dimensions (for 88QB): 24″W x 67″H x 18″D
  • Weight (varies by unit): 215 lbs.

Filter Elements sold separately


USPI 88 Large Contaminants

Click to download


  • Easy installation and operation
  • Installation requires only a power source, two isolation ball valves, four compression fittings and some tubing
  • Sample probe makes taking oil samples quick and easy
  • Convects heat away from the system
  • Multi-pass depth filtration reduces particulate and water contamination
  • Bag filter pulls out large contaminants to preserve depth filters for fine filtration
  • Filtration down to one micron (dependent upon USPI filter element chosen)
  • Can restore or bring oil to cleaner-than-new levels
  • Filter elements each hold about 12 pounds of solid and 5 quarts of water contaminants
  • Doubles oil life of mineral-based oils
  • Increases oil life tenfold when using quality USPI  synthetic and semi-synthetic lubricants
  • Typically increases pump life tenfold


88SB10-120 gal1 depth + 1 bag
88DB60-360 gal2 depth + 1 bag
88QB120-720 gal4 depth + 1 bag