The BIR Series ISO A Interchange Couplers are one of the most popular designs worldwide, due to their durability and use of a poppet style valve for the sealing mechanism. The BIR series features a zinc plated steel coupler and zinc plated hardened steel nipple, with nitrile seals. They are available from size 1/4 to 2 inches in size, to cover the various fields of hydraulic applications.

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


  • Size range: 1/4” thru 2”
  • Port options: NPT, SAE, BSP
  • Interchanges with ISO A
  • Working pressure: 13-35 MPa/1885-5075 psi range
  • Positive-stop valving prevents flow checking
  • Large diameter hardened steel sleeves resist deformation for maximum life
  • Suitable for open or closed center hydraulic system
  • Various fields of hydraulic applications
  • Agricultural and mobile equipment
  • Industrial plants

Additional information

Body Size

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Port Options

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Port Size

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Valve Style

Working Pressure


Download: ISO A ID Chart

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