A.Y. McDonald 5141 CTS x MNPT ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$150.36
A.Y. McDonald 5141 CTS x MNPT No-Lead Adapter Coupling

A.Y. McDonald 5141 CTS x MNPT No-Lead Adapter Coupling

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Model: 5141-194

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

$150.36
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A.Y. McDonald 5141 CTS x MNPT No-Lead Adapter Coupling

The A.Y. McDonald 5141 is a 1" x 3/4" CTS Joint x MIP (MNPT) adapter/joint coupling engineered for reliable transitions between CTS tubing and male iron pipe threaded connections. Manufactured to No-Lead standards, this coupling is identified by A.Y. McDonald as model 74753-22 and is documented under spec sheet reference 5141-144. It is designed to provide a secure, leak-resistant joint where CTS piping systems must connect to standard MNPT fittings, making it a practical solution for water service and distribution applications that require dependable dimensional compatibility. Plumbing contractors and maintenance professionals rely on purpose-built CTS x MNPT couplings like the 5141 to simplify transitions without introducing extra fittings or adapters, saving time on both new installations and repair work. Because the 5141 is manufactured to No-Lead standards, it is suited for potable water service lines where lead-free construction is required by code, giving installers confidence that the fitting meets current material requirements for drinking water applications.

Key Features

  • Trade Size: 1" CTS Joint x 3/4" MIP (MNPT) for straightforward transitions between tubing and threaded pipe systems.
  • Connection Type: CTS Joint x MNPT configuration allows the fitting to bridge CTS tubing runs with standard male-threaded connections.
  • No-Lead Compliance: Manufactured to No-Lead specifications, supporting use in potable water applications where lead-free construction is required.
  • Adapter/Joint Coupling Design: Functions as both an adapter and a joint coupling, simplifying fitting selection for CTS-to-MIP transitions.
  • Manufacturer Documentation: Backed by A.Y. McDonald spec sheet 5141-144, referencing manufacturer part number 74753-22 for verification and specification lookup.

Technical Specifications

  • Product Type: General Fitting
  • Trade Size: 1" CTS x 3/4" MIP
  • Grade: No-Lead
  • Manufacturer Part Number: 74753-22
  • Spec Sheet Reference: 5141-144

Typical Applications

  • Potable Water Service Line Connections
  • CTS Tubing to MNPT Fitting Transitions
  • Residential and Commercial Water Distribution Systems
  • Plumbing Retrofit and Repair Projects
  • New Construction Water Supply Installations

Why A.Y. McDonald?

A.Y. McDonald manufactures the 5141 adapter/joint coupling to No-Lead standards, ensuring it is suitable for potable water applications where lead-free construction is a requirement. With documented specifications available via the manufacturer's official spec sheet 5141-144 and part number 74753-22, contractors and plumbing professionals can verify fit and compliance before installation. Choosing a purpose-built CTS x MNPT coupling from a recognized manufacturer like A.Y. McDonald helps ensure a dependable, code-conscious connection between tubing and threaded pipe systems, reducing callbacks and simplifying inventory for crews that regularly transition between CTS and MNPT plumbing components.

Manufacturer Resources

Spec Sheet

Product Specs

Product Group:
Plumbing
Department:
Plumbing
Product Type:
General Fitting
Product Subgroup:
Fittings

A.Y. McDonald 5141-194 – Frequently Asked Questions

1) What does the A.Y. McDonald 5141 coupling connect to on each end?
One end is a CTS compression joint for copper tube size poly or copper service tubing, and the other end is male NPT pipe thread. So it takes a water service line into a threaded female fitting, such as a meter yoke, valve, or brass nipple. It is a no-lead body, which is what you need on potable water service.
2) I have 1 inch service tubing but a 3/4 inch female thread at the meter. Which 5141 do I order?
Order the 1 x 3/4 inch version, part 5141-144. It takes 1 inch CTS tubing on the compression side and steps down to a 3/4 inch male NPT outlet, so you do not need a separate reducing bushing. If you have the opposite situation, 3/4 inch tubing into a 1 inch thread, that is part 5141-194.
3) Does the CTS compression end on this A.Y. McDonald coupling work with PE poly water service pipe?
CTS means copper tube size, so the compression joint is sized to CTS outside diameters. CTS-sized PE water service tubing and copper tubing of the matching nominal size both land on that joint. IPS-sized poly pipe has a different OD and will not seat correctly, so confirm your tubing is CTS before ordering.
4) What sizes does the A.Y. McDonald 5141 CTS x MNPT adapter come in?
Six sizes: 1 inch (5141-129), 1 x 3/4 inch (5141-144), 1-1/4 inch (5141-155), 1-1/2 inch (5141-168), 2 inch (5141-181), and 3/4 x 1 inch (5141-194). The straight sizes match tube to thread one to one; the two-number callouts are the reducing and increasing versions.
5) Is the A.Y. McDonald 5141 coupling legal for potable drinking water service?
The 5141 is a no-lead fitting, which is how A.Y. McDonald designates its potable water service line. That is the family you use on municipal water service and building supply. Do not substitute an older leaded brass coupling on a potable line.
6) Can I use the A.Y. McDonald 5141 to join two pieces of tubing together?
No. It is a CTS joint on one side and male pipe thread on the other, so it is a transition fitting from tubing to a threaded connection. To splice two runs of service tubing you need a CTS x CTS coupling instead, not the 5141.
7) What is the largest size this A.Y. McDonald joint x male thread coupling is made in?
2 inch is the top of the range, part number 5141-181, with 1-1/2 inch (5141-168) just below it. For larger service mains you will be looking at a different fitting family.
How fast can I get the A.Y. McDonald 5141-194 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 5141-194 come with a warranty?
Absolutely. The A.Y. McDonald 5141-194 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 5141-194?
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 5141-194 from ZenSupply?
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