Infinity Straight Union Connector (Nickel-Plated Brass & Aluminum)

The Reliable Link for Seamless Pipe Extension

Extend your air lines efficiently and securely with the Infinity Straight Union Connector. This essential fitting is designed to join two lengths of Infinity Aluminum Pipe together, allowing you to create continuous, leak-free runs across your facility. Whether you are spanning a large warehouse or extending a drop to a new workstation, this union ensures maximum flow without pressure drops.

Available in two distinct material builds to suit the scale of your system, the Straight Union guarantees durability and performance from small workshops to heavy industrial plants.

Optimized Materials for Every Size

  1. Nickel-Plated Brass (20mm – 63mm)

For standard distribution lines and drops, the union is constructed from robust, heavy-duty brass with a protective nickel plating.

  • Push-to-Connect Speed: Features the patented Infinity stainless-steel grab ring. Simply push the pipe in for an instant, secure lock—no tools required.
  • Corrosion Resistance: The nickel plating protects against moisture and harsh industrial environments, keeping the fitting looking professional and clean.
  • Zero Leakage: Dual internal O-rings ensure a perfect seal immediately upon insertion.
  1. Die-Cast Aluminum (80mm – 168mm)

For high-volume industrial mainlines, the union utilizes a lightweight, high-strength aluminum construction.

  • Heavy-Duty Grip: Uses a specialized clamp-style or heavy-duty retention mechanism designed to withstand the immense forces of large-diameter airflow.
  • Uniform Expansion: Being made of the same material as the pipe, these fittings expand and contract thermally at the same rate, preventing leaks during temperature spikes.
  • Easy Handling: Significantly lighter than iron or steel couplings, making overhead installation safer and less labor-intensive.

Key Features & Benefits

  • Full-Bore Flow: Unlike crimped connections that narrow the pipe, the Infinity Union fits over the tubing. This maintains the full internal diameter, ensuring your air compressor delivers 100% of its power to your equipment without restriction.
  • Modular & Removable: System changes are inevitable. The Infinity Union allows for disassembly (via the release nut or bolt removal), enabling you to modify or expand your system without cutting or wasting pipe.
  • Vacuum & Inert Gas Ready: Suitable not just for compressed air, but also for industrial vacuum systems and inert gases like nitrogen, thanks to its high-quality sealing technology.

Technical Specifications

  • Connection Type: Straight Tube-to-Tube Coupling
  • Pressure Rating: Up to 232 PSI (16 Bar)
  • Temperature Range: -4°F to +176°F (-20°C to +80°C)
  • Materials:
    • 20mm – 63mm: Nickel-Plated Brass Body, Technopolymer Internal Cap, NBR Seals
    • 80mm – 168mm: Die-Cast Aluminum Body, NBR Seals
  • Application: Joining two equal lengths of Infinity Pipe

Build a system that flows better and lasts longer. Connect with confidence using Infinity Straight Union Connectors.

Infinity Straight Union Connectors

USA REF D B C E L CH1 CH2 Bag
90040-20 20 1.240 (31.5) 0.571 (14.5) 1.358 (34.5) 3.012 (76.5) 0.827 (21) 1.181 (30) 2
90040-25 25 1.516 (38.5) 0.531 (13.5) 1.673 (42.5) 3.563 (90.5) 1.024 (26) 1.378 (35) 2
90040-32 32 1.811 (46) 0.571 (14.5) 2.047 (52) 4.193 (106.5) 1.260 (32) 1.772 (45) 2
90040-40 40 2.047 (52) 0.827 (21) 2.480 (63) 4.921 (125) 1.614 (41) 2.165 (55) 2
90040-63 63 2.323 (59) 0.984 (25) 3.622 (92) 6.299 (160) 2.559 (65) 2.756 (70) 1
90040-80 80 3.583 (91) 0.138 (3.5) 5.709 (145) 7.323 (186) 0.236 (6) 2
90040-110 110 4.941 (125.5) 0.157 (4) 7.874 (200) 10.039 (255) 0.315 (8) 1
90040-168 168 7.638 (194) 0.197 (5) 12.047 (306) 15.472 (393) 0.394 (10) 1