Nibco PC604P34X12 Pex Press Adapter 3/4 X 1/2 Inch

Product Description

The NIBCO PC604P34X12 is a reducing PEX-to-press adapter fitting designed to connect 3/4-inch PEX tubing to 1/2-inch press connections in piping systems. This fitting is part of the NIBCO Press System, which uses a crimp-style installation method that eliminates the need for open flame or soldering. A unique N witness mark becomes visible on the fitting once the connection is properly crimped, providing a clear visual confirmation of a complete joint. Licensed plumbers and pipefitters install this fitting using compatible pressing tools, jaws, and chains. It is suited for both residential and commercial applications across a range of water-based systems.

This adapter fits into water distribution, radiant floor heating, municipal water supply, geothermal climate control, snow melt, and drip irrigation systems. It can also be installed in underground applications where appropriate. The reducing configuration — 3/4 inch PEX on one end and 1/2 inch press on the other — makes it useful when transitioning between different tubing sizes within the same system. No additional threading or adhesive bonding is required during installation.

Key Features

• Crimp-style press connection eliminates open flame — no soldering required
• N witness mark provides visual confirmation of a fully seated, completed crimp
• Reducing adapter transitions 3/4-inch PEX to 1/2-inch press connection
• Rated for underground installation in addition to above-grade use
• Copper or copper alloy construction offers durability and low maintenance
• Backed by a 50-year limited warranty from NIBCO

Compatibility

Designed for use within the NIBCO Press System for joining PEX tube in residential and commercial water distribution, radiant floor heating, municipal water supply, geothermal climate control, snow melt, and drip irrigation applications. Compatible with standard NIBCO pressing tools, jaws, and chains.

Installation Notes

Installation is performed by a licensed plumber using NIBCO-compatible pressing tools and the appropriate jaw or chain for the fitting size. Shut off the water supply and depressurize the line before beginning any work. Verify that the tubing is cut cleanly and fully seated into the fitting before crimping. Inspect the N witness mark after crimping to confirm the connection is complete. Follow all applicable local plumbing codes and manufacturer technical data sheets for engineering and installation requirements.

Technical Specifications

• Connection Type: PEX x Press
• Inlet Size: 3/4 inches
• Outlet Size: 1/2 inches
• Material: Copper or copper alloy
• Warranty: 50-year limited
• UPC: 039923308139

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: PC604P34X12