Parker 322HB-3PP Barbed Tube Union Connector 3/16 in

Product Description

The PARKER 322HB-3PP is a single-barb tube union connector designed to join two lengths of flexible tubing in a straight-line configuration. Molded from polypropylene, this fitting accepts 3/16-inch barb connections on both ends and accommodates tubing with a 3/16-inch inside diameter and a 0.25-inch outside diameter. It is rated for working pressures up to 125 psi and a maximum working temperature of 212 degrees F, making it suitable for a range of fluid-transfer and low-pressure line applications. The connector meets FDA compliance and NSF/ANSI 51 certification requirements, qualifying it for food-equipment and potable-water-contact environments. Licensed plumbers, HVAC technicians, and fluid-systems installers are the typical end users for this fitting type.

This union connector is commonly used in low-pressure fluid-handling systems including food-service equipment, water-purification assemblies, beverage dispensing lines, and HVAC condensate or drain tubing. Its barbed design provides a friction-retention fit on compatible flexible tubing, and the straight union configuration allows inline splicing or repair of existing tubing runs. The compact overall length of 1.61 inches makes it practical in tight equipment enclosures or panel-mounted assemblies. It is suited for both residential and light commercial applications where a clean, chemical-resistant polypropylene fitting is required.

Key Features

• Single-barb union connector joins two 3/16-inch ID flexible tube segments inline
• Polypropylene construction provides chemical resistance and lightweight durability
• Rated to 125 psi maximum working pressure
• Operating temperature range from 0 degrees F to 212 degrees F
• FDA compliant and NSF/ANSI 51 certified for food-equipment and potable-water contact
• Compact 1.61-inch overall length suits restricted installation spaces

Compatibility

Designed as a direct-fit barbed union connector for flexible tubing with a 3/16-inch inside diameter and 0.25-inch outside diameter. Verify tubing material and wall thickness compatibility before installation.

Installation Notes

Installation does not require tools beyond basic hand pressure to seat the barb fully into the tubing. Shut off and depressurize the fluid line before removing or replacing any fitting in the assembly. Ensure tubing is cut cleanly and squarely to achieve a full barb engagement and minimize leak risk. This fitting is not intended for high-pressure, steam, or gas service outside its rated working conditions.