Parker 322HB-12N Barbed Tube Union Connector 3/4 in

Product Description

The PARKER 322HB-12N is a single-barb tube union connector designed to join two sections of flexible tubing in fluid-handling systems. Molded from white nylon, this fitting accepts tubing with a 3/4 inch inside diameter and a 0.8 inch outside diameter on each end. It handles working pressures up to 125 psi and operates across a temperature range of -40 degrees F to 200 degrees F. At 2.97 inches in overall length and weighing just 0.01 pounds, it is a compact, lightweight component suited for tight installation spaces. It meets FDA compliance and NSF/ANSI 51 standards, making it appropriate for food-equipment and potable-water adjacent applications.

This union connector is used in plumbing, HVAC, and food-service equipment applications where a secure, leak-resistant barbed connection is required between two runs of compatible flexible tubing. The single-barb design provides a straightforward push-on installation and is commonly found in water treatment systems, ice machines, beverage dispensing equipment, and light-duty fluid transfer lines. Installation is typically performed by licensed plumbers or qualified equipment service technicians working on low-pressure fluid systems.

Key Features

• Single-barb union design joins two 3/4 inch ID flexible tube sections end to end
• Nylon construction resists corrosion and is compatible with a range of low-pressure fluids
• Rated to 125 psi maximum working pressure
• Wide temperature range: -40 degrees F to 200 degrees F (-40 degrees C to 93.3 degrees C)
• FDA compliant and NSF/ANSI 51 certified for food-equipment fluid contact applications
• Compact at 2.97 inches overall length and weighing 0.01 pounds

Compatibility

Designed as an OEM-style replacement or service fitting for flexible tubing systems with a 3/4 inch inside diameter and 0.8 inch outside diameter. Consult system documentation to confirm tubing material and pressure compatibility before installation.

Installation Notes

Depressurize and drain the fluid line completely before removing or installing any barbed fitting. Tubing should be cut cleanly and squarely to ensure a full seat on the barb. A hose clamp is recommended over each barb to maintain a secure connection under pressure cycling. Work in accordance with applicable plumbing codes such as the IPC for potable-water systems.