Parker 322HB-8-4PP Barbed Tube Union Connector 1/2x1/4

Product Description

The PARKER 322HB-8-4PP is a barbed tube union connector designed to join two sections of flexible tubing in low-pressure fluid-handling systems. Constructed from polypropylene, this fitting handles a range of compatible media and resists corrosion in typical plumbing and fluid-transfer applications. The connector features two different barb sizes — 1/2 inch on one end and 1/4 inch on the other — allowing a direct transition between two tube sizes in a single fitting. Installation requires no tools beyond a secure push-and-clamp technique, making it a practical choice for technicians assembling or servicing fluid lines in HVAC, pool, and light industrial systems.

This fitting is suited for residential and light commercial applications where flexible tubing connects equipment, reservoirs, or distribution points. The reducer-style barb configuration is commonly used in pool and spa chemical feed lines, HVAC condensate drain systems, and general fluid-transfer assemblies where a 1/2 inch to 1/4 inch tube transition is required. Polypropylene construction makes it a cost-effective option for non-pressurized or low-pressure service environments.

Key Features

• Reducer union design connects 1/2 inch barb to 1/4 inch barb in a single fitting
• Polypropylene construction resists corrosion and chemical degradation
• Black color for easy identification and UV-resistant service environments
• Compact form factor suits tight installation spaces
• No tools required for basic push-on barbed installation with appropriate clamps

Compatibility

Designed as an OEM-style replacement or new-install barbed union connector for flexible tubing systems requiring a 1/2 inch to 1/4 inch barb transition in low-pressure fluid-handling applications.

Installation Notes

Installation is typically performed by plumbing, HVAC, or pool service technicians. Shut off fluid flow and depressurize the line before removing or installing any barbed fitting. Secure each barb end with an appropriate hose clamp sized for the tubing outside diameter to prevent pull-off or leakage. Verify that the tubing material and working pressure are compatible with polypropylene fittings before installation.