A.Y. McDonald 5141--13 1-1/4" ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$45.40
A.Y. McDonald 5141--13 1-1/4" CTS x FNPT No-Lead Adapter

A.Y. McDonald 5141--13 1-1/4" CTS x FNPT No-Lead Adapter

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Model: 5141-135

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

$45.40
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A.Y. McDonald 5141--13 1-1/4" CTS x FNPT No-Lead Adapter

The A.Y. McDonald 5141--13 is a 1-1/4" CTS x FNPT No-Lead Adapter, engineered to provide a secure and reliable transition between CTS (Copper Tube Size) piping and female national pipe thread (FNPT) connections. Identified by manufacturer part number 74754-22, this adapter is manufactured to meet No-Lead requirements, making it suitable for potable water applications where lead-free components are required. Its straightforward CTS x FNPT configuration makes it a practical, single-piece choice for water service connections that require a dependable transition fitting between tubing and threaded pipe systems, eliminating the need for extra couplings or adapters in the run. Water utilities, plumbing contractors, and municipal installers rely on components like the 5141--13 to keep service line transitions simple, code-compliant, and easy to specify by manufacturer part number.

Key Features

  • Trade Size: 1-1/4" sizing for compatibility with standard CTS tubing and FNPT threaded connections.
  • Connection Type: CTS x FNPT configuration allows for a direct transition between copper tube size piping and female national pipe thread fittings.
  • No-Lead Compliance: Manufactured to No-Lead specifications, supporting use in potable water systems where lead-free materials are required.
  • Manufacturer Reference: Cross-referenced to A.Y. McDonald part number 74754-22 for accurate identification and ordering.
  • Adapter Design: Provides a straightforward, single-piece solution for joining CTS tubing to threaded pipe or fittings without the need for additional couplings.
  • Reliable Transition: Designed to create a secure, leak-resistant joint between tubing and threaded pipe systems in water service applications.

Certifications & Compliance

  • No-Lead Compliant for Potable Water Applications

Technical Specifications

  • Manufacturer Part Number: 74754-22
  • Trade Size: 1-1/4"
  • Connection Type: CTS x FNPT
  • Lead Compliance: No-Lead

Typical Applications

  • Potable Water Service Line Connections
  • Transitioning Between CTS Tubing and Threaded Pipe Fittings
  • Residential and Commercial Water Distribution Systems
  • Water Meter and Service Connection Assemblies
  • Municipal and Utility Water Infrastructure Projects

Why A.Y. McDonald?

A.Y. McDonald manufactures water works and plumbing components designed for dependable performance in potable water applications. The No-Lead construction of the 5141--13 CTS x FNPT Adapter supports code-compliant installations where lead-free materials are required, giving contractors and utilities a trusted transition fitting for water service connections. With its clear cross-reference to manufacturer part number 74754-22, this adapter simplifies specification and ordering for professionals building or maintaining potable water distribution systems.

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Manufacturer Resources

Product Specs

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

A.Y. McDonald 5141-135 – Frequently Asked Questions

1) What sizes does the A.Y. McDonald 5141 CTS x FNPT adapter come in?
The 5141 series no-lead adapter is made in four sizes: 1 inch (5141-135), 1-1/4 inch (5141-156), 1-1/2 inch (5141-169) and 2 inch (5141-182). The size covers both ends, so a 1-1/4 inch adapter takes 1-1/4 inch CTS tubing on one side and 1-1/4 inch female NPT thread on the other.
2) Will the A.Y. McDonald 5141 adapter connect copper tube size PE or poly water service pipe to a threaded fitting?
That is exactly what it is for. One end is CTS (copper tube size), the other is female NPT thread, so it lets you bring a CTS-sized water service line onto any male-threaded fitting, valve nipple or meter connection of the same nominal size.
3) Is this A.Y. McDonald adapter legal for potable drinking water lines?
It is a no-lead adapter, which is how A.Y. McDonald designates its potable-water brass waterworks fittings. The 5141 series is built for drinking water service connections.
4) Do I need a female or male thread on the mating fitting for a 5141 adapter?
Male. The threaded side of the 5141 is female NPT, so the part it screws onto must be male NPT of the same nominal size. If your valve or meter spud is female, you need a male-thread adapter instead, not this one.
5) Can I use a 1-1/4 inch 5141 adapter on 1 inch service line?
No. The 5141 adapters are straight, same-size-through fittings, not reducers. A 1-1/4 inch body (5141-156) takes 1-1/4 inch CTS on one end and 1-1/4 inch FNPT on the other. For a 1 inch line order the 1 inch body, 5141-135, and handle any size change with a separate reducing bushing or coupling.
6) What part number should I give my supplier for a 2 inch CTS to female NPT no-lead adapter?
A.Y. McDonald 5141-182 is the 2 inch adapter in the no-lead CTS x FNPT line. Quote the brand with the number, since 5141 sizes run 5141-135 (1 inch) through 5141-182 (2 inch) and the suffix, not the nominal size, is what identifies the part.
How fast can I get the A.Y. McDonald 5141-135 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 5141-135 come with a warranty?
Absolutely. The A.Y. McDonald 5141-135 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 5141-135?
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 5141-135 from ZenSupply?
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