Onstream Liquid Series

Onstream Liquid Filter Housings

Our Onstream Filter Housings are ideal for a variety of liquid purification solutions. Port sizes available are 1/2”, 3/4” or 1” NPT.

Choose from a variety of off the shelf, disposable or re-cleanable DOE cartridges. Our disposable elements include spun polypropylene and pleated cartridges. We also offer a wide range of re-cleanable pleated stainless steel cartridges from 5 micron up to 500 micron.

Our extensive range of housings and elements can be used for coolant, process water, paint, or petro-chemical applications. Our selection affords accurate solutions based upon the contaminates to be removed, the level of filtration, and the relative importance of cost, and element life.


  • One-Piece Bowl For Quick & Spill Free Element Service
  • Extra Bottom Reservoir Capacity For Sediment Deposit Collection
  • Wide Variety Of Filter Element Available
  • 250 PSIG Maximum, 1/2”, 3/4” And 1” NPT Port Sizes


  • Food Processing
  • Corrosive Liquid Service
  • Batch Service Filtration
Housing ModelSLH818SLH820SLH895
Port Size (NPT)1/2”, 3/4” or 1”1/2”, 3/4” or 1”1/2”, 3/4” or 1”
Drain Type (NPT)1/8”1/8”1/8”
Maximum Pressure (psig)250250250
Maximum Temperature (ºF)400400400
Principle Dimensions: (inches)
Head Diameter
Overall Length8.87513.7523.875
Cartridge Length4.8759.87519.875
Element Removal Clearance1.501.501.50
Filter Element Codes:
Spun Polypropylene (P) (1)LE-818-P□LE-820-P□LE-895-P□
Pleated Polypropylene (PL) (2)LE-818-□PLLE-820-□PLLE-895-□PL
Pleated Stainless Steel (SS) (3)SS-818-□VSS-820-□VSS-895-□V
Carbon Adsorbent (CC) LE-818-CCLE-820-CCLE-895-CC
Materials Of Construction:
Head, Internals, & Bowl316L Stainless Steel316L Stainless Steel316L Stainless Steel
Seals (Standard)VitonVitonViton
Stainless Steel DrainSS PET100-1/8”SS PET100-1/8”SS PET100-1/8”
Viton Seal Set (Standard)GVSLHGVSLHGVSLH

(1) Micron sizes available 1, 5, 25, 50, 75, and 150
(2) Micron sizes available 0.5, 2, 10, 25, 50, 75, and 100
(3) Micron sizes available 5, 10, 25, 50, 75, 100, 250, and 500

Liquid Filter Cartridges

A wide range of applications can be serviced with our disposable polypropylene pleated filter elements, with EPDM gaskets. Onstream Pleated Cartridges are effective for use in applications that require an economical way to reduce particulate levels. The pleated design extends surface area and assures high flow rates for maximum throughput. An interior and exterior perforated polypropylene support core allows the elements to be used in either flow direction.


  • FDA Listed Polypropylene Components
  • Variety Of Microns Available
  • Rigid Construction Maintains Lower Pressure Drop
  • Wide Chemical Compatibility
  • Longer On Line Service Reduces Costly Maintenance Time


  • Corrosive Liquids And Gases
  • Cryogenics
  • Recovery Of Precious Particulate
  • Hydraulic Oil Filter
  • Clean In Place (C.I.P.)
PrefixLength CodeNominal LengthSuffixMicron Rating
LE818818 = 4.875”005PL0.5
LE820820 = 9.875”01PL1
LE895895 = 19.875”10PL10
LE897897 = 29.875”25PL25
Example Part Number:50PL50
LE – 820 – 50PL90PL90

Our Polyspun filter cartridges are nominally rated 100% pure polypropylene filters. A high performance process, using very fine diameter fibers, which build up producing spun bonded layers, give the filter its depth. This process results in an element with excellent pore size consistency and very high void volumes. The outer layers contain different graded pore sizes, which act as pre-filtration by removing larger particles from the stream, leaving smaller particles to be trapped by the fine fibers of the inner layer. The use of very fine fibers – typically between 1 and 5 micron – creates many more pores than is possible with large fiber which results in open volumes in excess of 65% which in turn provides longer service life.

PrefixLength CodeNominal LengthSuffixMicron Rating
LE818818 = 4.875”P011
LE820820 = 9.875”P055
LE895895 = 19.875”P2525
LE897897 = 29.875”P5050
Example Part Number:P100100
LE – 820 – P100P150150

Stainless Steel Pleated Elements

Our pleated stainless steel elements are designed to fit our Onstream single element housings. Pleated stainless steel elements provide excellent strength, and are ideal for a variety of demanding applications where disposable elements have limited specifications.

The SS pleated elements are designed to fit our Onstream liquid housings and other proprietary brands.


  • Pleated Stainless Steel
  • Durable And Cleanable
  • Welded No Adhesives
  • Exceptional Chemical Resistance
  • Built In Support Core


  • Corrosive Liquids And Gases
  • Cryogenics
  • Viscous Fluids
  • Recovery Of Precious Particulate
  • Hydraulic Oil
  • Clean In Place (C.I.P.)
Element MaterialNominal LengthMicron RatingSeal Material
SS = 304L Stainless Steel818 = 4.875”5B = Buna N
SS316 = 316L Stainless Steel820 = 9.875”10V = Viton
895 = 19.875”20T = Teflon
897 = 29.875”50
Example Part Number:150
SS – 820 – 100 – V200