A.Y. McDonald 74753-33 Couplin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$42.14
A.Y. McDonald 74753-33 Coupling Fitting

A.Y. McDonald 74753-33 Coupling Fitting

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Model: 74753-33-3/4

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

$42.14
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A.Y. McDonald 74753-33-3/4 Pipe Coupling, 5142-122 Series, 3/4 Inch

The A.Y. McDonald 74753-33-3/4 is a 3/4-inch pipe coupling from the 5142-122 series, built for behind-the-wall and underground rough-in plumbing runs where a straight, in-line pipe-to-pipe connection is required. This coupling is identified under the A.Y. McDonald catalog numbers 74753-33-3/4 and 274753-33, and it is designed to join sections of 3/4-inch pipe into a continuous, secure run during new construction or repair work. As a coupling fitting, its job on the job site is straightforward: bring two pipe ends together at the correct trade size and hold that joint tight through the connection method built into the part, giving the installing plumber or contractor a dependable transition point in the line.

Key Features

  • Trade Size: Sized for 3/4-inch pipe, matching common rough-in branch and service line runs.
  • Coupling Configuration: Straight in-line design joins two pipe ends into one continuous run without a change in direction.
  • Catalog Cross-Reference: Also referenced as A.Y. McDonald 274753-33 and part of the 5142-122 series for easy cross-matching against existing plans or purchase orders.
  • Rough-In Application: Intended for installation behind walls, under floors, or below grade as part of a concealed piping system rather than a visible, finished fixture.
  • Trade Part: Supplied as a stocked rough-in plumbing fitting for plumbers, mechanical contractors, and plumbing wholesalers filling out a bill of materials on a job.

Technical Specifications

  • Trade Size: 3/4-inch
  • Series: 5142-122
  • Catalog Numbers: 74753-33-3/4, 274753-33
  • Product Type: Coupling

Typical Applications

  • Residential and Commercial Rough-In Plumbing
  • Joining 3/4-inch Pipe Runs Behind Walls or Under Floors
  • New Construction Water Service Installations
  • Repair and Replacement of Existing 3/4-inch Pipe Sections
  • Plumbing Wholesale Stock and Job-Site Bill of Materials

Why A.Y. McDonald?

A.Y. McDonald is a long-standing name in the water works and plumbing supply trade, and the 5142-122 series coupling continues that legacy as a straightforward, correctly sized fitting for connecting 3/4-inch pipe in rough-in installations. Contractors and plumbing wholesalers rely on catalog-matched A.Y. McDonald parts like the 74753-33-3/4 to keep bills of materials accurate and jobs moving without substitution guesswork. Stock this coupling alongside your other A.Y. McDonald rough-in fittings for consistent sourcing on every job.

[{"name": "Product Type", "value": "Coupling"}, {"name": "Trade Size", "value": "3/4 Inch"}, {"name": "Series", "value": "5142-122"}]

Manufacturer Resources

Product Specs

Product Subgroup:
Pipe Fittings
list_batch:
AYM-20260924
Product Group:
Plumbing
Product Type:
Coupling
Department:
Plumbing

A.Y. McDonald 74753-33-3/4 – Frequently Asked Questions

1) What sizes does the A.Y. McDonald 74753-33 coupling come in?
Two trade sizes: 3/4 inch (catalog 74753-33-3/4) and 1 inch (74753-33-1IN). Both are straight in-line couplings for joining two pipe ends of the matching size. Order by the pipe size you are running, since a coupling only mates with its own trade size.
2) Is the A.Y. McDonald 5142-122 coupling the same as part number 274753-33?
Yes, the 3/4 inch version is cross-referenced in A.Y. McDonald's catalog as both 74753-33-3/4 and 274753-33, and it sits in the 5142-122 series. If your plans or purchase order show either number, you are looking at the same 3/4 inch coupling.
3) Can I use this coupling below grade or does it have to stay accessible?
The 5142-122 series coupling is built for behind-the-wall and underground rough-in work, so it is meant to be installed concealed: behind walls, under floors, or below grade as part of a buried or concealed piping run rather than at a finished fixture.
4) Will this coupling change direction in my pipe run?
No. It is a straight, in-line fitting only, joining two pipe ends into one continuous run with no change in direction. For a turn you need an elbow rather than the 74753-33 coupling.
How fast can I get the A.Y. McDonald 74753-33-3/4 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 74753-33-3/4 come with a warranty?
Absolutely. The A.Y. McDonald 74753-33-3/4 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 74753-33-3/4?
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 74753-33-3/4 from ZenSupply?
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