Parker 325HB-4-2N Barbed Male Connector 1/4 in Barb 1/8 Npt

Product Description

The PARKER 325HB-4-2N is a barbed tube male connector designed to join soft tubing to a threaded port in fluid-handling and pneumatic systems. Constructed from nylon, this fitting accepts a 1/4 inch barb on one end and threads into a 1/8 inch NPT female port on the other. The barbed end grips the interior of flexible tubing to resist pull-out, while the tapered NPT thread forms a pressure-resistant seal when properly installed. Its white nylon construction resists corrosion and is well suited for low-pressure air, water, and compatible fluid lines commonly found in HVAC, refrigeration, pool, and general plumbing applications.

This connector is used in residential and light commercial applications where flexible tubing must terminate at a threaded manifold, valve, or port. Typical installations include condensate drain lines, chemical feed systems, pool equipment, and pneumatic control tubing. The lightweight nylon body makes it a practical choice in environments where metal fittings would add unnecessary weight or where mild chemical exposure is a concern. Licensed tradespeople and experienced service technicians handle routine installations of this fitting type.

Key Features

• 1/4 inch barb end secures flexible tubing with a firm, pull-resistant grip
• 1/8 inch NPT male thread provides a standard tapered thread connection to female-ported components
• Nylon construction offers corrosion resistance and chemical compatibility for common low-pressure fluid and air lines
• White color for quick visual identification in multi-line installations
• Compact form factor fits in tight equipment enclosures and panel cutouts

Compatibility

Designed as an OEM-style replacement or new-installation fitting for systems using 1/4 inch ID flexible tubing and 1/8 inch NPT female-threaded ports in low-pressure fluid or pneumatic applications.

Installation Notes

Installation is performed by qualified HVAC technicians, plumbers, or mechanical contractors. Shut off fluid supply and depressurize the line before removing or installing any fitting. Apply thread sealant tape or compound to the NPT threads in accordance with the applicable plumbing or mechanical code; do not overtighten nylon fittings, as excess torque can crack the body. Push tubing fully onto the barb until it seats against the fitting shoulder, and confirm a secure grip before returning the system to service.