Ay Mcdonald 4423-380 Pex-a Poly Insert 90 Elbow 1/2 in

Product Description

The AY MCDONALD 4423-380 is a 1/2 inch PEX-A poly insert 90 degree elbow fitting designed for use in PEX-A tubing systems. This insert-style elbow provides a directional change of 90 degrees within a potable water or hydronic distribution line. Constructed from polymer material, it is compatible with the expansion-style (PEX-A) connection method, which requires a PEX expander tool and expansion rings for a secure, leak-resistant joint. Plumbers and pipefitters working on residential and light commercial systems will encounter this fitting during rough-in and retrofit work.

This fitting is suited for 1/2 inch PEX-A tubing installations in residential plumbing, radiant heating distribution, and similar hydronic or potable water applications. The 90 degree elbow is commonly used where a right-angle direction change is needed in tight spaces such as wall cavities, under slabs, or within mechanical rooms. It is installed using the PEX-A expansion method, making it appropriate wherever PEX-A compatible fittings are specified by design or code.

Key Features

• 90 degree elbow geometry for right-angle directional changes in PEX-A tubing runs
• 1/2 inch size matches standard residential and light commercial supply line sizing
• Insert-style design used with PEX-A expansion rings and an expander tool
• Polymer construction suited for potable water and hydronic service
• Order increment of 1, allowing single-unit purchasing

Compatibility

Designed as an OEM-style insert fitting for use with 1/2 inch PEX-A tubing and compatible expansion rings in residential and light commercial plumbing and hydronic systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before cutting into an existing line. Use a calibrated PEX-A expander tool to expand the tubing and ring before seating the fitting insert. Allow the expanded tubing to recover fully around the fitting before pressurizing the system.