Sharkbite UA058A5 Pex-a Expansion Coupling 1/2x3/4 in 5-pack

Product Description

The SHARKBITE UA058A5 is a PEX-A plastic expansion coupling sold in a 5-pack, designed to join PEX-A pipe in residential and commercial plumbing systems. This coupling measures 1/2 inch by 3/4 inch and uses the expansion-style connection method, which requires a PEX expansion tool and compatible expansion rings to complete the joint. Once expanded and seated, the fitting contracts back to its original size around the pipe, forming a mechanical bond that tightens over time. Licensed plumbers and pipefitters install this fitting in potable water distribution, radiant heating, and water service line applications.

This coupling is approved for water service lines and burial applications, including installations encased in concrete. It is intended strictly for use with PEX-A pipe — it is not compatible with PEX-B or PEX-C pipe types. Typical install scenarios include new construction rough-in, service line repairs, and underground distribution runs where a reliable, long-term joint is required without soldering or crimping tools.

Key Features

• PEX-A expansion-style connection — joint strength increases over time as fitting contracts around pipe
• Approved for water service lines and burial in concrete
• 5-pack format supports multi-connection jobs without reordering
• 1/2 inch x 3/4 inch sizing accommodates transition connections between pipe sizes
• No soldering, crimping, or clamp rings required — expansion tool and rings only
• Compatible with PEX-A pipe only — not suitable for PEX-B or PEX-C

Compatibility

Compatible with PEX-A pipe only. Requires a PEX expansion tool and expansion rings to complete the connection. Approved for water service lines and burial applications including concrete encasement.

Installation Notes

Installation must be performed using a PEX expansion tool and correctly sized expansion rings — do not attempt to install without the proper expansion tooling. Shut off and depressurize the water supply before cutting into any existing line. Follow local plumbing codes and IPC requirements for pipe burial depth, bedding material, and potable water fittings. Verify that all pipe in the system is PEX-A before using these couplings, as this fitting will not seal correctly on PEX-B or PEX-C pipe.