Parker 322HB-5N Barbed Tube Union Connector 5/16 Inch

Product Description

The PARKER 322HB-5N is a single-barb tube union connector designed to join two flexible tubes of equal diameter in fluid-handling systems. Molded from white nylon, this fitting accepts tubing with a 5/16-inch inside diameter and a 0.37-inch outside diameter on both ends. It carries an overall length of 1.61 inches and is rated for a maximum working pressure of 125 psi across a temperature range of -40 degrees F to 200 degrees F. Compliance with FDA and NSF/ANSI 51 standards makes it suitable for use in food-contact and potable-water adjacent applications. The part weighs 0.01 pounds.

This union connector is used wherever two lengths of flexible tubing must be coupled inline without threaded fittings. Typical applications include food and beverage equipment, water purification systems, ice machines, and light-duty pneumatic or fluid transfer lines. The single-barb design provides a secure grip on compatible soft or semi-rigid tubing. The nylon construction resists corrosion and chemical degradation in the environments common to these installations. Licensed plumbers, HVAC technicians, and equipment service technicians all encounter this fitting class in commercial and light industrial equipment.

Key Features

• Single-barb design grips 5/16-inch ID tubing on both ends for secure inline union
• Nylon construction resists corrosion and is compatible with a wide range of fluids
• Rated to 125 psi maximum working pressure for reliable performance under load
• Wide temperature range of -40 degrees F to 200 degrees F suits demanding environments
• FDA compliant and NSF/ANSI 51 certified for food-equipment and potable-water adjacent use
• Compact overall length of 1.61 inches fits tight routing spaces

Compatibility

Designed as an OEM-style replacement or new-installation union fitting for flexible tubing with a 5/16-inch inside diameter and a 0.37-inch outside diameter in food service, water treatment, and fluid transfer equipment.

Installation Notes

Shut off fluid supply and depressurize the line before removing or installing any barbed fitting. Insert each tube end fully over the barb until the tubing seats against the fitting body; a hose clamp is recommended to maintain the connection under sustained pressure or vibration. Verify tubing material compatibility with the fluid being conveyed before installation. Follow all applicable plumbing or equipment codes for the installation environment.