Parker 325HB-3-4PP Barbed Male Connector 3/16 in Barb 1/4 Npt

Product Description

The PARKER 325HB-3-4PP is a single-barb male connector designed to join flexible tubing to a 1/4 inch NPT male threaded port. Molded from polypropylene, this fitting accepts tubing with a 3/16 inch inside diameter and a 0.25 inch outside diameter. It is rated for working pressures up to 125 psi and a temperature range of 0 degrees F to 212 degrees F, making it suited for a wide range of fluid-handling and pneumatic applications. The part meets FDA Compliant and NSF/ANSI 51 standards, qualifying it for use in food-equipment and potable-water-adjacent installations. Plumbers, HVAC technicians, and equipment service techs install this fitting as part of low-pressure tubing assemblies.

This connector is used in residential and light commercial applications where flexible plastic tubing must terminate at a threaded port. Typical install scenarios include condensate drain lines, water treatment equipment, beverage dispensing systems, and other fluid-handling assemblies that require a reliable push-on barb-to-NPT transition. The black polypropylene construction resists common chemicals and is appropriate for both indoor and light-duty outdoor service within its rated temperature range.

Key Features

• Single-barb design secures 3/16 inch ID flexible tubing without a clamp in low-pressure service
• 1/4 inch NPT male thread provides a standard connection to threaded fittings and valve bodies
• Polypropylene construction offers corrosion resistance and compatibility with a broad range of fluids
• Rated to 125 psi maximum working pressure
• Operating temperature range of 0 degrees F to 212 degrees F
• FDA Compliant and NSF/ANSI 51 certified for food-equipment and potable-water-adjacent use

Compatibility

Designed as an OEM-style replacement or new-installation fitting for flexible tubing assemblies using 3/16 inch ID tubing terminated at a 1/4 inch NPT male threaded port.

Installation Notes

This fitting is typically installed by plumbers, HVAC technicians, or equipment service technicians working on low-pressure fluid or pneumatic lines. Shut off the fluid supply and relieve system pressure before disconnecting or replacing any fitting. Apply thread sealant or PTFE tape to the NPT threads in accordance with IPC guidelines before tightening. Do not over-torque the threaded connection, as polypropylene threads can crack under excessive force.