Parker 329HB-4-4N Barbed Tube Male Elbow 1/4 in Npt

Product Description

The PARKER 329HB-4-4N is a single-barb male elbow fitting designed to connect flexible tubing to a male NPT-threaded port. Molded from nylon and colored white, this fitting features a 1/4 inch barb that accepts tubing with a 1/4 inch inside diameter and a 0.31 inch outside diameter. The male end is threaded 1/4 inch NPT for direct installation into compatible female-threaded ports. It is rated for a maximum working pressure of 125 psi and handles temperatures from -40 degrees F to 200 degrees F. Plumbers, HVAC technicians, and fluid-system installers use this fitting in potable water, food-service, and low-pressure pneumatic or liquid distribution lines.

This elbow fitting is suited for residential and light commercial applications where a 90-degree directional change is needed between flexible tubing and a fixed threaded connection. Its FDA-compliant, NSF/ANSI 51-certified nylon construction makes it appropriate for food-equipment plumbing, drinking water systems, and similar sanitary fluid-handling installations. The elbow geometry keeps tubing routed cleanly in tight spaces without the need for additional bends or adapters.

Key Features

• Single-barb design secures 1/4 inch ID flexible tubing without clamps in low-pressure service
• 1/4 inch NPT male thread for direct connection to standard female NPT ports
• Nylon construction resists corrosion and is compatible with a wide range of non-aggressive fluids
• Rated to 125 psi maximum working pressure
• Operating temperature range of -40 degrees F to 200 degrees F (-40 degrees C to 93.3 degrees C)
• FDA compliant and certified to NSF/ANSI 51 for food-equipment plumbing applications

Compatibility

Designed for use with flexible tubing having a 1/4 inch inside diameter and approximately 0.31 inch outside diameter. Suitable for low-pressure potable water, food-service, and fluid-distribution systems requiring a 1/4 inch NPT male connection point.

Installation Notes

Installation is typically performed by a licensed plumber or qualified HVAC or fluid-systems technician. Shut off fluid supply and relieve system pressure before installing or replacing any fitting. Hand-tighten the NPT thread into the receiving port, then apply minimal additional torque with an appropriate wrench — do not overtighten nylon fittings, as the material is susceptible to thread damage from excess force. Confirm the barb is fully seated and tubing is pushed to the barb base before returning the system to service; for pressurized lines, a clamp or zip tie is recommended for added retention per applicable plumbing codes.