A.Y. McDonald 74779M-331 1" Qu...
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$92.95
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A.Y. McDonald 74779M-331 1" Quarter Bend Water Service Fitting

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Model: 74779M-331"

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

$92.95
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A.Y. McDonald 74779M-331 1" Quarter Bend

The A.Y. McDonald 74779M-331 is a 1" quarter bend fitting designed for rough-in water service and distribution piping where a 90° directional change is required. As a quarter bend, this fitting allows plumbers and contractors to route pipe runs around obstructions, transition between vertical and horizontal runs, or make clean turns behind walls and under floors without introducing unnecessary joints. The 1" trade size makes this fitting suitable for standard water service lines, and its quarter-bend (90°) configuration is a staple fitting in any rough-in plumber's inventory for service line layout and directional transitions.

Key Features

  • Trade Size: 1" nominal size for compatibility with standard water service piping runs.
  • Angle: 90° quarter bend configuration for clean directional transitions in rough-in piping layouts.
  • Fitting Type: Quarter bend / elbow fitting for use where pipe runs must change direction behind walls or below grade.
  • Rough-In Application: Built for behind-the-wall and underground service line installation, not decorative or exposed fixture use.
  • A.Y. McDonald Manufacturing: Sourced from A.Y. McDonald, a long-standing manufacturer of waterworks and plumbing rough-in fittings trusted by professional installers.

Technical Specifications

  • Trade Size: 1"
  • Configuration: Quarter Bend (90°)
  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Water Service Line Rough-In
  • Residential and Commercial Underground Water Distribution
  • Directional Transitions in Behind-the-Wall Piping
  • New Construction and Water Service Replacement

Why A.Y. McDonald?

A.Y. McDonald is a recognized name in waterworks and plumbing rough-in components, supplying fittings that professional plumbers and contractors rely on for water service installation. Choosing the A.Y. McDonald 74779M-331 1" quarter bend means specifying a fitting built for the demands of underground and behind-the-wall water service work, where dependable directional transitions are essential to a clean, functional pipe run.

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Manufacturer Resources

Product Specs

list_batch:
AYM-20260924
Product Type:
Elbow
Angle:
90°
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Pipe Fittings
Product Size:
1"

A.Y. McDonald 74779M-331" – Frequently Asked Questions

1) Can I use this A.Y. McDonald quarter bend on an exposed fixture supply or does it belong underground?
It's a rough-in fitting, intended for behind-the-wall and buried water service and distribution piping, not decorative or exposed fixture work. Typical uses are water service line rough-in, underground residential and commercial distribution, and directional transitions inside walls or below floors. For a finished, visible supply you want a trim-grade fitting instead.
2) Will one quarter bend replace two 45s in a water service run?
Yes, and that's the usual reason to reach for it. A single 1 inch quarter bend makes the full 90 degree turn in one joint instead of two, which is fewer potential leak points on a buried service line or a wall rough-in. A.Y. McDonald lists it exactly for routing around obstructions and turning between vertical and horizontal runs.
3) What is the manufacturer part number for the 1 inch A.Y. McDonald quarter bend?
Order it as A.Y. McDonald 74779M-33 in the 1 inch size, listed as 74779M-331. Give the distributor both the number and the 1 inch trade size, since the number carries the size suffix and it's easy to transpose.
How fast can I get the A.Y. McDonald 74779M-331" 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 74779M-331" come with a warranty?
Absolutely. The A.Y. McDonald 74779M-331" 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 74779M-331"?
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 74779M-331" from ZenSupply?
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