The FIRG Flat Face Series, the original ISO 16028 interchangeable coupling, continues to offer good performance, long life and competitive pricing. The integrated sealing mechanism greatly reduces premature wear caused by movement between coupler and nipple parts affected by impulse pressure and the weight of the hoses and tubing when the coupling is in horizontal position.

Speak to a Specialist:
847-956-9720 or Via Mail


  • Size range: 1/4” thru 2”
  • Port options: NPT, BSP
  • Interchanges with ISO 16028
  • Working pressure: 20-30 MPa/2900-4350 psi range
  • Non-spill design avoids fluid loss during connection/disconnection
  • Minimal air inclusion during connection
  • Tight tolerances ensure equal loading of couplers
  • Anywhere fluid loss and hydraulic circuit contamination need to be reduced or eliminated
  • Mobile construction, agriculture, and mining operations
  • General industrial plants

Additional information

Body Size

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Port Options


Port Size

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Valve Style

Working Pressure


Download:  ISO 16028 ID Chart

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