Hydac DFFH & DFFHM Series High Pressure Filters

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  • DFFH Reverse Flow models filter fluid in the forward direction and bypass the filter element when the flow direction is reversed.
  • DFFHM Bi-Directional model allows fluid filtering in both directions. There is a filter element for both directions.
  • Inlet/outlet port options include SAE 4-bolt flange code 62, or SAE ports (DFFHM flange only) to allow easy installation without costly adapters.
  • O-ring seals are used to provide positive, reliable sealing. Choice of O-ring materials (Nitrile, Fluoroelastomer, and EPR) provide compatibility with petroleum oils, synthetic fluids, water-glycols, oil/water emulsions, and high water base fluids.
  • Screw-in bowl mounted below the filter head requires minimal clearance to remove the element for replacement; contaminated fluid cannot be washed downstream when element is serviced.
  • Clogging indicators have no external dynamic seal. This results in high reliability due to magnetic actuation which eliminates a leak point.
  • A poppet-type bypass valve (optional) provides positive sealing during normal operation and fast opening during cold starts and flow surges.