Ay Mcdonald 4423-383 Pex-a Poly Insert 90 Elbow 1 in

Product Description

The AY MCDONALD 4423-383 is a 1-inch PEX-A poly insert 90-degree elbow fitting designed for use in potable water and hydronic piping systems. This fitting connects PEX-A tubing at a right angle, allowing directional changes in a run without the need for soldering or open flame. The poly insert design is compatible with PEX expansion and clamp-style installation methods. Licensed plumbers and pipefitters install this type of fitting in both new construction and retrofit applications where a durable, corrosion-resistant transition is required.

This elbow is suited for residential and light commercial plumbing systems using 1-inch PEX-A tubing. Typical installation scenarios include supply line routing around structural members, under-slab transitions, and manifold branch connections. The poly insert construction resists scale buildup and is appropriate for both hot and cold water distribution lines. It is also used in radiant heating and snowmelt systems where PEX-A is the specified tubing type.

Key Features

• 90-degree elbow configuration for right-angle directional changes in PEX-A piping runs
• 1-inch poly insert sizing compatible with standard PEX-A tubing
• Corrosion-resistant polymer construction suitable for potable water service
• No soldering or open flame required during installation
• Compatible with PEX expansion and clamp-style installation methods

Compatibility

Designed as an OEM-style insert fitting for use with 1-inch PEX-A tubing in residential and light commercial plumbing and hydronic heating systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and depressurize the line before beginning any fitting work. Use the appropriate PEX expansion tool or clamp tool sized for 1-inch fittings to ensure a proper, leak-free connection. Inspect the tubing end for squareness and burrs before inserting the fitting.

Technical Specifications

• Size: 1 inch
• Configuration: 90-Degree Elbow
• Fitting Type: Poly Insert
• Tubing Compatibility: PEX-A
• UPC: 811734022790
• Order Increment: 1

Standard Information

• Brand: AY MCDONALD
• Manufacturer Part Number: 4423-383