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Brass Expansion Male Adapters

Used to transition between PEX-A pipe and an FNPT threaded connection.

Available In
  • UAB116 1/2 in. x 3/4 in. MNPT
  • UAB120 1/2 in. x 1/2 in. MNPT
  • UAB140 1 in. x 1 in. MNPT
  • UAB142 1 in. x 3/4 in. MNPT
  • versatile


    Certified for use in potable water and hydronic heating systems.
  • flexible


    Use with PEX-A or PE-RT pipe.
  • durable


    Corrosion-resistant fitting made from high-performance Acudel Polymer.

Transition between PEX pipe and an FNPT threaded connection with an expansion sleeve.

  • Made from high-performance DZR lead-free brass.
  • Connects to PEX-A pipe with expansion rings.
  • Minimum working temperature: 33°F @ 160 psi.
  • Maximum working temperature/pressure: 160°F @ 73 psi.
  • ASTM F1960
  • ASTM F877
  • CSA B137.5
  • NSF/ANSI 14
  • NSF/ANSI/CAN 372
  • ASTM E84
  • CAN/ULC S102.2
  • ASTM E119
  • CAN/ULC S101

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