Parker 325HB-6-4PP Barbed Tube Male Connector 3/8 in

Product Description

The PARKER 325HB-6-4PP is a single-barb male connector designed for barbed tube-to-NPT male thread connections in fluid handling and pneumatic systems. Molded from polypropylene, it accepts a 3/8-inch tube inside diameter and features a 1/4-inch NPT male thread for direct pipe connection. Rated to 125 psi maximum working pressure and a maximum working temperature of 212 degrees F, it suits a wide range of low-to-medium pressure liquid and air service applications. It meets FDA compliance and NSF/ANSI 51 standards, making it appropriate for food-equipment and potable-water-contact installations. Plumbers, HVAC technicians, and equipment service professionals install this fitting wherever a barbed tube transition to a threaded port is required.

This connector is commonly used in residential and light commercial fluid systems including water treatment equipment, ice machines, beverage dispensing lines, HVAC condensate and chilled-water tubing runs, and similar low-pressure plumbing assemblies. The 3/8-inch barb accepts flexible tubing with a 3/8-inch inside diameter and 0.43-inch outside diameter. The single-barb design keeps assembly straightforward in tight spaces. Its black polypropylene construction resists corrosion and is compatible with a broad range of water-based fluids within its rated temperature and pressure envelope.

Key Features

• Single-barb 3/8-inch barb size accepts 3/8-inch ID flexible tubing
• 1/4-inch NPT male thread for direct connection to standard pipe ports
• Polypropylene construction — corrosion-resistant and lightweight
• Rated to 125 psi maximum working pressure
• Operating temperature range: 0 degrees F to 212 degrees F (-12.2 degrees C to 100 degrees C)
• FDA compliant and NSF/ANSI 51 certified for food-equipment fluid contact

Compatibility

Designed as an OEM-style replacement or new-install fitting for systems using 3/8-inch ID flexible tubing with a 1/4-inch NPT male thread port connection in food, beverage, water treatment, or HVAC condensate applications.

Installation Notes

Shut off fluid supply and relieve system pressure before replacing or installing this fitting. Hand-tighten the NPT thread first, then apply thread sealant tape per applicable IPC guidelines before final tightening — do not overtighten polypropylene threads. Push flexible tubing fully onto the barb until seated, then secure with an appropriate clamp for the rated pressure. Installation is typically performed by a licensed plumber or qualified HVAC technician.