Parker 325HB-4-8N Barbed Tube Male Connector 1/4 in

Product Description

The PARKER 325HB-4-8N is a single-barb male connector designed to join 1/4-inch ID flexible tubing to a 1/2-inch NPT male thread. Molded from white nylon, this fitting is rated for working pressures up to 125 psi and handles temperatures from -40 degrees F to 200 degrees F. It carries FDA Compliant and NSF/ANSI 51 certifications, making it appropriate for food-equipment and potable-water applications. The barbed end accepts tubing with a 0.31-inch outside diameter, and the 1.73-inch overall length keeps the installed footprint compact in tight plumbing runs.

This connector is used in residential and light commercial plumbing, food-service equipment, water filtration systems, and ice-maker supply lines where a secure push-and-barb connection to NPT-threaded ports is required. It is also found in HVAC condensate drain assemblies and pool or spa chemical feed systems that use flexible tubing. Licensed plumbers, HVAC technicians, and food-equipment service technicians are the primary installers.

Key Features

• Single-barb design grips 1/4-inch ID flexible tubing securely without clamps
• 1/2-inch NPT male thread for direct connection to standard pipe fittings and valves
• Nylon construction resists corrosion and is compatible with water-based media
• Rated to 125 psi working pressure for reliable service in pressurized lines
• FDA Compliant and NSF/ANSI 51 certified for food-zone and potable-water use
• Wide temperature range of -40 degrees F to 200 degrees F suits hot and cold applications

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 1/4-inch ID flexible tubing terminating at a 1/2-inch NPT threaded port.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician following IPC or applicable local plumbing codes. Shut off the water supply and relieve system pressure before removing or installing any fitting. Apply thread sealant or PTFE tape to the NPT threads and hand-tighten before using a wrench to snug the connection — do not overtighten nylon fittings, as the threads can crack. Push tubing fully onto the barb until it seats against the fitting shoulder for a leak-free joint.