A.Y. McDonald 5122-14 Flare Un...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$240.00
A.Y. McDonald 5122-14 Flare Union, Lead-Free Brass Coupling

A.Y. McDonald 5122-14 Flare Union, Lead-Free Brass Coupling

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Model: 5122-147

In Stock (leaves warehouse same day if ordered before 3pm ET)

$240.00
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A.Y. McDonald 5122-14 Flare Union, Lead-Free Brass Coupling

The A.Y. McDonald 5122-14 is a 1-1/2" 501 Flare Union built to Lead-Free (LF) specifications, designed to join two lengths of tubing with a secure, leak-resistant flare-to-flare connection. This flare union coupling is a trusted choice for water service and plumbing professionals who need a reliable, code-compliant fitting for potable water applications. Backed by A.Y. McDonald's reputation for durable waterworks and plumbing components, the 5122-14 delivers a dependable mechanical connection without the need for soldering or solvent welding, making it a practical option for both new installations and repair work. Because the joint is made mechanically rather than with heat or chemical bonding, it's especially well suited to service line repairs, meter setter connections, and situations where a torch or solvent cement isn't practical or permitted.

Key Features

  • Trade Size: 1-1/2" flare union sized for standard tubing connections.
  • Lead-Free (LF) Construction: Manufactured to meet lead-free requirements for potable water applications, helping installations stay code-compliant.
  • Flare Union Design: 501-style flare union provides a secure mechanical joint between two flared tube ends without soldering.
  • Coupling Configuration: Functions as a coupling to join tubing runs in water service and plumbing systems.
  • Brass Body: Built from lead-free brass for corrosion resistance and long service life in potable water systems.
  • A.Y. McDonald Quality: Sourced from a manufacturer known for reliable waterworks and plumbing fittings.
  • Documented Specifications: Manufacturer spec sheet (5122-147) available for reference on exact dimensional and performance data.

Technical Specifications

  • Product Type: Coupling
  • Trade Size: 1-1/2"
  • Configuration: 501 Flare Union
  • Compliance: Lead-Free (LF)

Typical Applications

  • Potable Water Service Line Connections
  • Residential and Commercial Plumbing Repairs
  • Tubing-to-Tubing Flare Connections
  • Water Meter Setter and Service Connections
  • New Construction Plumbing Installations

Why A.Y. McDonald?

A.Y. McDonald has long supplied plumbing and waterworks professionals with fittings built for dependable, code-compliant performance. The 5122-14 Flare Union's lead-free construction and secure flare-to-flare design make it a trusted choice for potable water applications where a leak-resistant mechanical joint is required. Choose A.Y. McDonald for consistent quality backed by documented manufacturer specifications and a reputation built over decades of supplying waterworks professionals.

[{"name": "Product Type", "value": "Coupling"}, {"name": "Product Material", "value": "Brass"}, {"name": "Trade Size", "value": "1-1/2\""}, {"name": "Configuration", "value": "501 Flare Union"}, {"name": "Standards", "value": "Lead-Free (LF)"}]

Manufacturer Resources

Spec Sheet

Product Specs

Product Subgroup:
Pipe Fittings
Product Group:
Plumbing
Department:
Plumbing
Product Type:
Coupling

A.Y. McDonald 5122-147 – Frequently Asked Questions

1) What sizes does the A.Y. McDonald 501 flare union come in?
Two sizes: 1-1/2 inch (part 5122-147) and 2 inch (part 5122-148). Both are the same 501 flare union, so order by the copper tube size you are joining.
2) Is the A.Y. McDonald 501 flare union lead free for potable water service lines?
Yes. The 501 flare union is an LF (lead free) fitting, which is what a municipal water department or plumbing contractor needs for potable water service work.
3) Will the 1-1/2 inch 501 union work on 2 inch copper tubing?
No. Flare fittings are size specific, so the 1-1/2 inch union (5122-147) takes 1-1/2 inch tube on both ends only. For 2 inch tube, order 5122-148. If you need to change size in the run, use a coupling or adapter made for that transition rather than forcing a flare.
4) What is a flare union used for on a water service line?
A union joins two runs of tubing in-line and can be taken apart later without cutting the pipe. On the 501, both ends are flare connections, so the copper tubing is flared with a flaring tool and drawn up against the fitting's seats by the nuts. That gives a mechanical, no-solder, no-torch joint, which is why flare is standard on buried copper water service between the corp stop and the meter setter.
5) Do I need a soldered or crimped joint, or can I use the 501 flare union in a trench?
No heat and no crimp tool required. Flare is a compression-style mechanical joint made with a flaring tool, which is why it is used in wet trenches and in confined pits where an open flame is not practical. You do need the tube ends properly flared; a square, clean flare is what seals the joint, not sealant.
6) Are the flare nuts included with the A.Y. McDonald 501 union, or do I order them separately?
The 501 is a complete two-end flare union, supplied as an assembly with its nuts, so you are not buying the body and nuts as separate line items. What you supply is the tubing and the flaring tool.
7) What is the exact part number for the 2 inch A.Y. McDonald 501 flare union?
Part 5122-148 is the 2 inch, and 5122-147 is the 1-1/2 inch. Quote the full number when specifying, since the 5122 series covers both sizes and only the suffix separates them.
How fast can I get the A.Y. McDonald 5122-147 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the A.Y. McDonald 5122-147 come with a warranty?
Absolutely. The A.Y. McDonald 5122-147 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the A.Y. McDonald 5122-147?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the A.Y. McDonald 5122-147 from ZenSupply?
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