Harmsco HIF-75 Industrial Up-Flow Filter 300 GPM

Sku: 370-HIF-75-BASE

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The HIF-75 is designed with a patented Up-flow
technology which prevents the accumulation
of air inside the filter housing keeping
the filter operating at 100%
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Product Description

Product Description

Harmsco HIF-75 Up-Flow Filter - A Design So Superior It's Patented

Harmsco Up-Flow Cartridge Filters outperform conventional filter designs. Venting valves are not necessary and filtration efficiency is improved.



  • Residential and Commercial Drinking Water
  • Cooling Tower Filtration
  • Process Water
  • Reverse Osmosis Pre-Filtration
  • Ground Water Remediation
  • Utility Water
  • Industrial Waster Water Treatment
  • Surface Water Treatment Rule (SWTR) II

Why Is Up-Flow Such A Big Deal?

This product is designed with a patented Up-Flow Technology which prevents the accumulation of air inside the filter housing, keeping the filter operating at 100% efficiency.  In a typical competitive multi-cartridge filter, there is a potential for air entrapment.  With outlets located below inlets, air travels upward so vents are needed to expel air that can accumulate within the filter vessel during operation.  There is also a potential for by-pass. With outlets located below inlets, by-pass can occur as unfiltered liquid drains downward to the sump while the cartridges are removed. This may result in by-pass when the filter is put back into service.

So What Makes The Harmsco HIF Up-Flow Filter Different?



  • 304 stainless steel construction, standard
  • Electropolished for increased resistance to corrosion
  • 150 psi (10.3 bar) pressure rating
  • All filter housings are hydrostatically tested
  • Easy cartridge installation, removal and service
  • Individual studs for safe, secure lid closure
  • Extensive choice of cartridge micron ratings and media


  • Holding rods, lifting rods & standpipes:  CPVC standard
  • Pipe caps:  CPVC standard
  • Rim gaskets:  EPDM standard
  • O-Rings:  Buna-N standard
  • Bottom seals:  Natural gum rubber standard
  • Wing nuts:  Brass
  • Maximum Temperature:  Rated to 140º F (60º C) with standard CPVC rods, standpipes, caps, and standard filter cartridges; to 200º F (93º C) for all stainless models with stainless steel 
  • Maximum Pressure:  Rated for pressures to 150 psi (10.3 bar) max
  • hif-size-chart.jpgMaximum Flow:  300 GPM
  • Uses 75 standard 2-3/4" x 9-3/4" or 25 "triples" 2-3/4" x 29-1/4" Cartridges


  • Flanged Connection
  • 304 Stainless Internals
  • 316 Stainless Construction
  • 316 Stainless Construction & Internals
  • 3M Scotchkote 134 Fusion-Bonded Epoxy Coating (specifically for sea water and chemical compatibility)


  • A - Height:  42"
  • B - Diameter:  20"
  • C - Leg Width:  20"
  • D - Height:  6-3/8"
  • Service Height:  70"
  • Pipe Size:  3" NPT
  • Drain Size:  1-1/2" NPT

Coat Option


3M™ Scotchkote 134 Fusion-Bonded Epoxy Coating is a one-part, heat curable, thermosetting epoxy coating designed for corrosion protection of metal.  The epoxy is 
applied to preheated steel as a dry powder which melts and cures to a uniform coating thickness.  This bonding process provides excellent adhesion and coverage on applications such as valves, pumps, pipe drains, hydrants and porous castings.  Scotchkote 134 coating is resistant to wastewater, corrosive soils, hydrocarbons, harsh chemicals, and sea water.  Powder properties allow easy manual or automatic application by electrostatic or air-spray equipment.

  • Suitable for elevated temperature service in presence of H2S, CO2, CH4, crude oil and brine.
  • Long-term performance history in water, sewage, and other service environments.
  • Scotchkote 134 coating has been tested and  certified to ANSI/NSF Standard 61, Drinking Water System Components.
  • Scotchkote 134 FBEC meets the requirements of AWWA Standard C213 and C550.
  • Operating temperature dry is 235°F/ 113°C

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Additional Information

Additional Information

Availability Ships From Manufacturer
Manufacturer Harmsco
Dimensions Height: 42"
Diameter: 20"
Leg Width: 20"
Height: 6-3/8"
Service Height: 70"
Pipe Size: 3" NPT
Drain Size: 1-1/2" NPT
Warranty Manufacturer's Warranty

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