Parker 129HB-8-4 Brass Barbed Elbow 1/4 Nptf X 1/2 Hose

Product Description

The PARKER 129HB-8-4 is a brass barbed hose fitting in a 90-degree elbow configuration, designed to connect a 1/2-inch inside diameter hose to a 1/4-inch NPTF male threaded port. Constructed from brass, it offers reliable corrosion resistance in fluid handling applications. The 0.530-inch barb diameter provides a secure mechanical grip on compatible hose. It is rated for service from -40 degrees F to 160 degrees F, making it suitable for a wide range of liquid and low-pressure pneumatic lines. Plumbers, HVAC technicians, and industrial maintenance trades install this fitting as a reliable transition between threaded pipe connections and flexible hose assemblies.

This elbow fitting is used wherever a direction change is needed between a threaded port and a barbed hose run. Common applications include residential and light commercial plumbing, HVAC condensate and fluid lines, equipment coolant circuits, and general industrial fluid transfer systems. The NPTF thread standard ensures a pressure-tight mechanical seal without relying solely on thread sealant. It is suited for installations where space constraints require a 90-degree transition rather than a straight barbed adapter.

Key Features

• Brass construction provides corrosion resistance in water and fluid service
• 1/4-inch NPTF male thread delivers a pressure-tight mechanical seal
• 1/2-inch ID hose barb with 0.530-inch barb diameter for secure hose retention
• Elbow configuration allows 90-degree directional change in tight spaces
• Rated from -40 degrees F to 160 degrees F for broad temperature compatibility

Compatibility

Designed as an OEM-style replacement or service fitting for systems using 1/2-inch ID flexible hose and 1/4-inch NPTF male threaded ports in plumbing, HVAC, and fluid transfer applications.

Installation Notes

Installation is typically performed by a licensed plumber or HVAC technician. Apply an appropriate thread sealant or PTFE tape to the NPTF male threads before assembly to ensure a leak-free connection. Secure the hose over the barb with a hose clamp rated for the application pressure and temperature. Shut off all fluid supply and relieve system pressure before removing or installing any fitting.