Parker 322HB-4N Barbed Tube Union Connector 1/4 Inch

Product Description

The PARKER 322HB-4N is a single-barb tube union connector designed to join two lengths of flexible tubing in fluid transfer systems. Made from white nylon, this straight union fitting accepts 1/4-inch inside diameter tubing on both ends and is rated for a maximum working pressure of 125 psi. The fitting meets FDA compliance and NSF/ANSI 51 standards, making it appropriate for food equipment and potable water applications. Its operating temperature range runs from -40 degrees F to 200 degrees F, covering the demands of most commercial and light industrial fluid handling installations. Plumbers, refrigeration techs, and food-service equipment technicians are the primary installers of this type of fitting.

This union connector is suited for residential and commercial applications where two runs of 1/4-inch flexible tubing must be joined inline. Typical uses include ice maker water supply lines, RO system plumbing, commercial beverage equipment, and similar low-pressure fluid transfer circuits. The nylon construction resists corrosion and is compatible with water and many non-aggressive fluid media. Its compact overall length of 1.61 inches makes it practical in tight spaces and equipment interiors.

Key Features

• Single-barb union design joins two 1/4-inch ID flexible tubing sections inline
• Nylon construction provides corrosion resistance and lightweight installation
• Rated to 125 psi maximum working pressure
• Operating range of -40 degrees F to 200 degrees F suits a wide range of service environments
• FDA compliant and NSF/ANSI 51 certified for food equipment and potable water contact
• Compact at 1.61 inches overall length for use in confined installations

Compatibility

Designed for use with flexible tubing having a 1/4-inch inside diameter and a 0.31-inch outside diameter. Suitable for inline union connections in food service equipment, water filtration systems, and similar low-pressure plumbing circuits where NSF/ANSI 51 compliance is required.

Installation Notes

Installation is performed by plumbers or qualified equipment service technicians. Shut off the water supply and relieve system pressure before disconnecting or installing any tubing fitting. Push tubing firmly over each barb to the full seating depth to ensure a leak-free connection. Verify tubing wall thickness and flexibility are appropriate for barbed retention before pressurizing the system.