Parker 322HB-4PP Barbed Tube Union Connector 1/4 in

Product Description

The PARKER 322HB-4PP is a single-barb tube union connector designed to join two lengths of flexible tubing in low-pressure fluid handling systems. Molded from black polypropylene, this straight union fitting accepts tubing with a 1/4 inch inside diameter and a 0.31 inch outside diameter on each end. It is rated for a maximum working pressure of 125 psi and a temperature range of 0 degrees F to 212 degrees F, making it suitable for a broad range of liquid transfer applications. The fitting meets FDA Compliant and NSF/ANSI 51 standards, qualifying it for use in food-equipment and potable-water-adjacent systems.

This connector is used in residential and light commercial plumbing, HVAC condensate drain lines, water filtration systems, ice makers, and food-service equipment where a secure barb-to-barb union is needed without tools or fittings hardware. Polypropylene construction resists common cleaning chemicals and mild acids encountered in these environments. Licensed plumbers, HVAC technicians, and equipment service pros install this fitting wherever a quick, reliable tube splice is required.

Key Features

• Single-barb design on both ends creates a secure push-to-connect tube union without additional hardware
• Polypropylene body resists corrosion, moisture, and common chemicals
• FDA Compliant and NSF/ANSI 51 certified for food-equipment and potable-water-contact applications
• Rated to 125 psi maximum working pressure
• Wide temperature range: 0 degrees F to 212 degrees F (-12.2 degrees C to 100 degrees C)
• Compact overall length of 1.61 inches suits tight installation spaces

Compatibility

Designed for flexible tubing with a 1/4 inch inside diameter and approximately 0.31 inch outside diameter. Suitable as a straight union connector in low-pressure tubing runs across HVAC, plumbing, and food-service equipment applications.

Installation Notes

Installation requires no special tools — push the barbed ends firmly into each section of tubing until seated past the barb. Depressurize and drain the line before removing or replacing any fitting. Verify that tubing inside diameter matches the 1/4 inch barb size to ensure a leak-free seal. Follow applicable IPC or local plumbing codes when installing in potable-water or food-service systems.