Nibco px81280x Pex Reducing Female Adapter 1/2 X 3/4 in

Product Description

The NIBCO px81280x is a lead-free PEX reducing female adapter conforming to the ASTM F1807 standard. It connects a 1/2-inch PEX crimp (SSC) end to a 3/4-inch female pipe thread (FPT) fitting, making it a practical transition component in potable water distribution and hydronic systems. The lead-free construction meets regulatory requirements for drinking water applications. Licensed plumbers install this fitting during new construction and retrofit work where a PEX run must terminate or transition into a threaded female port on a valve, manifold, or fixture supply.

This adapter is suited for residential and light commercial plumbing systems using PEX tubing. It is used wherever a 1/2-inch PEX line must connect to a 3/4-inch FPT threaded component. Typical applications include connecting PEX branch lines to larger threaded manifold ports, shutoff valves, or fixture supply assemblies. The F1807 crimp-ring design is compatible with standard PEX crimp tools and copper crimp rings sized for 1/2-inch PEX tubing.

Key Features

• Lead-free construction compliant with safe drinking water regulations
• ASTM F1807 standard SSC crimp-style PEX connection on the 1/2-inch end
• 3/4-inch female pipe thread (FPT) on the outlet end for threaded connections
• Reducing design transitions 1/2-inch PEX to 3/4-inch FPT in a single fitting
• Compatible with standard copper crimp rings and PEX crimp tools

Compatibility

Designed as an OEM-style replacement and standard fitting for F1807-compliant PEX crimp systems using 1/2-inch PEX tubing transitioning to 3/4-inch female threaded connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply and depressurize the line before making any connections. Use a calibrated PEX crimp tool with the correct 1/2-inch jaw to seat the copper crimp ring fully over the PEX tubing and fitting barb. Apply thread sealant or PTFE tape to the FPT connection as required by the fitting manufacturer and local code.

Technical Specifications

• Fitting Size: 1/2 inch x 3/4 inch
• Connection Type: SSC (PEX Crimp F1807) x FPT (Female Pipe Thread)
• Standard: ASTM F1807
• Lead Free: Yes

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: px81280x