Parker 322HB-8-6PP Barbed Tube Union 1/2 X 3/8 Inch

Product Description

The PARKER 322HB-8-6PP is a barbed tube union connector designed to join two lengths of flexible tubing in a straight-line configuration. Molded from polypropylene, this fitting resists moisture, mild chemicals, and corrosion, making it well-suited for low-pressure fluid transfer lines in HVAC condensate drainage, plumbing, and light industrial applications. The connector features a 1/2 inch barb on one end and a 3/8 inch barb on the other, allowing it to transition between two different tubing inner diameters in a single fitting. Installation requires no tools beyond a clamp or cable tie to secure the tubing over each barb.

This union connector is used in residential and light commercial applications where flexible tubing runs need to be joined or where a size transition between 1/2 inch and 3/8 inch tubing is required. Common install scenarios include HVAC condensate drain lines, potable or non-potable water distribution in low-pressure systems, and irrigation or fluid-handling assemblies where a permanent push-and-clamp connection is acceptable. The polypropylene body keeps weight minimal and offers good compatibility with water and many dilute chemical solutions.

Key Features

• Transitions between 1/2 inch and 3/8 inch barbed tubing connections in a single fitting
• Polypropylene construction resists moisture, corrosion, and mild chemicals
• Black color for UV-resistance consideration in exposed or semi-exposed installations
• Tool-free push-and-clamp installation — secure with a clamp or cable tie over each barb
• Lightweight at 0.01 pounds, reducing load on flexible tubing runs

Compatibility

Designed as an OEM-style replacement or new-installation barbed union connector for flexible tubing systems using 1/2 inch and 3/8 inch inner-diameter tubing in low-pressure fluid transfer applications.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or irrigation professionals working with flexible tubing systems. Shut off the fluid supply and relieve any line pressure before removing or installing the fitting. Push each barb fully into the tubing until the tubing seats past the barb bead, then secure with an appropriately sized hose clamp or cable tie. Verify the connection is rated for the system pressure and fluid type before restoring flow.