Parker 325HB-8-4PP Barbed Tube Male Connector 1/2 in Barb

Product Description

The PARKER 325HB-8-4PP is a single-barb male connector designed to join flexible tubing to a 1/4 inch NPT threaded port. Constructed from polypropylene, this fitting accepts tubing with a 1/2 inch inside diameter and a 0.55 inch outside diameter. It is rated for working pressures up to 125 psi and handles temperatures from 0 degrees F to 212 degrees F, making it suitable for a wide range of fluid-handling applications. The fitting meets FDA compliance and NSF/ANSI 51 standards, confirming its suitability for food-equipment and potable-water-adjacent systems. Plumbing technicians, HVAC service pros, and equipment maintenance personnel are the typical installers.

This connector is used in residential and light commercial fluid-transfer systems where flexible tubing must terminate at an NPT-threaded valve, manifold, or equipment port. Common applications include water treatment equipment, ice machines, beverage dispensing systems, and HVAC condensate or chemical-feed lines. The black polypropylene construction resists many common chemicals and mild acids encountered in these service environments. The single-barb profile provides a secure grip on tubing without requiring a clamp in low-pressure service, though a clamp is recommended at or near the rated working pressure.

Key Features

• Single-barb design accepts 1/2 inch ID flexible tubing for a reliable push-on connection
• 1/4 inch NPT male thread for direct installation into standard threaded ports
• Polypropylene construction offers chemical resistance and lightweight durability
• 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 fluid contact

Compatibility

Designed as an OEM-style replacement or new-installation fitting for flexible-tubing systems using 1/2 inch ID tubing and 1/4 inch NPT threaded ports in plumbing, HVAC, and food-service equipment applications.

Installation Notes

Installation is typically performed by a licensed plumber or qualified HVAC technician. Shut off fluid supply and relieve system pressure before installing or removing any fitting. Apply thread sealant or PTFE tape to the NPT male threads in accordance with IPC and local plumbing code requirements. Do not over-tighten the NPT connection into plastic-bodied manifolds or valves, as polypropylene threads can crack under excessive torque.