A.Y. McDonald 5146173 3/4" x 5...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$111.59
A.Y. McDonald 5146173 3/4" x 5/8" Angle Ball Supply Stop, Flare x Yoke, No-Lead

A.Y. McDonald 5146173 3/4" x 5/8" Angle Ball Supply Stop, Flare x Yoke, No-Lead

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Model: 5146173

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

$111.59
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A.Y. McDonald 5146173 3/4" x 5/8" Angle Ball Supply Stop, Flare x Yoke, No-Lead

The A.Y. McDonald 5146173 (model 74642BY) is an angle ball supply stop built for rough-in and finish plumbing connections where a compact, reliable shutoff is needed at the fixture supply. This valve is configured 3/4" x 5/8" with an SP flare inlet x yoke outlet connection, and it is manufactured to a No-Lead standard for potable water service. Plumbers use this style of angle stop to isolate a fixture supply line - typically for a toilet, faucet, or appliance connection - without shutting down the branch or main line. The ball-valve design gives a quarter-turn, full-flow shutoff that is faster to operate and less prone to seizing over time than a traditional compression-washer stop.

Key Features

  • Trade Size: 3/4" x 5/8" sizing for standard fixture supply rough-in applications.
  • Angle Configuration: Angle-pattern body directs flow 90° from inlet to outlet, suited for supply lines exiting a wall or floor.
  • Ball Valve Operation: Quarter-turn ball-valve shutoff provides positive, full-flow open/close control at the fixture stop.
  • Connection Type: SP flare inlet x yoke outlet connection for compatibility with flare-fitted supply tubing and yoke-style fixture connections.
  • No-Lead Construction: Manufactured to No-Lead standards for use in potable water supply lines.
  • Model Reference: Identified by A.Y. McDonald model number 74642BY for cross-reference and reordering.

Technical Specifications

  • Trade Size: 3/4" x 5/8"
  • Connection: SP Flare x Yoke
  • Configuration: Angle Ball Valve
  • Lead Status: No-Lead
  • Model Number: 74642BY

Typical Applications

  • Fixture Supply Shutoff for Toilets and Bidets
  • Residential and Commercial Rough-In Plumbing
  • Renovation and Fixture Replacement Work
  • Angle-Pattern Wall or Floor Supply Connections
  • Potable Water Supply Line Isolation

Why A.Y. McDonald?

A.Y. McDonald supplies plumbing professionals with No-Lead rated valves and fittings built for dependable, code-conscious potable water service. The 5146173 angle ball supply stop combines quarter-turn ball-valve reliability with a flare x yoke connection sized for common fixture rough-in work, giving contractors a straightforward, repeatable shutoff solution behind the wall or under the fixture.

Manufacturer Resources

Product Specs

list_batch:
AYM-20260924
Product Type:
Supply Stop
Connection Type:
Flare x Yoke
Configuration:
Angle Ball Valve
Standards:
No-Lead
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Plumbing
Product Size:
3/4" x 5/8"

A.Y. McDonald 5146173 – Frequently Asked Questions

1) What does the 3/4" x 5/8" sizing on the A.Y. McDonald 5146173 angle stop actually refer to?
The 3/4 inch is the inlet side (SP flare) and the 5/8 inch is the outlet side (yoke). So you are feeding the stop from 3/4 inch flare-fitted supply tubing and coming out to a 5/8 inch yoke-style fixture connection. If your supply tube and fixture connection are not that pair of sizes, this is not the stop for that rough-in.
2) Will an A.Y. McDonald flare x yoke supply stop connect to copper or PEX with a compression fitting?
No. The 5146173 is built with an SP flare inlet, so it mates to flare-fitted supply tubing, not compression and not a threaded or sweat joint. If the existing line is prepped for compression, you either need to flare the tube or pick a stop with a compression inlet instead.
3) Is this A.Y. McDonald supply stop safe for potable drinking water lines?
It is manufactured to a No-Lead standard for potable water service, which is what plumbing inspectors look for on a fixture supply serving drinking water. That covers toilet, faucet, and appliance supply branches in both residential and commercial work.
4) Should I use an angle stop or a straight stop on a fixture supply?
Use the angle pattern, like the 5146173, when the supply line comes out of the wall or floor and the flow has to turn 90 degrees to reach the fixture riser. A straight stop is the one you want when the tube and the riser are already in line, such as a supply coming up through the floor directly below the fixture connection. Picking the wrong pattern means the riser fights the stop.
5) Why choose a ball-type angle stop over an old-style compression washer stop for rental property turnovers?
The 5146173 uses a ball valve, so it is a quarter-turn open or close with full flow and no rubber washer to harden or weep. Compression-washer stops are the ones maintenance techs find seized or dripping years later when nobody has touched the handle. For a fleet of units where stops sit untouched between turnovers, the ball design is the one that still operates when you need to isolate a single fixture.
6) Can I shut off one toilet with this stop without killing water to the rest of the building?
Yes, that is the point of it. The stop installs at the fixture supply so a tech can isolate that single toilet, bidet, faucet, or appliance and leave the branch and main in service. Quarter turn on the ball valve and the fixture is dead.
7) Is a yoke outlet the right connection for a toilet supply?
A yoke outlet is made for yoke-style fixture connections, and toilet and bidet supply shutoff is one of the listed applications for the 5146173. If the fixture you are hooking up expects a threaded or compression riser nut rather than a yoke, this outlet will not take it.
8) What is the A.Y. McDonald model number I should reorder this angle stop under?
A.Y. McDonald identifies it as model 74642BY, and the part number is 5146173. Use either when you are matching stops already installed in a building so the flare x yoke configuration and 3/4 x 5/8 sizing stay consistent across the job.
How fast can I get the A.Y. McDonald 5146173 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 5146173 come with a warranty?
Absolutely. The A.Y. McDonald 5146173 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 5146173?
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
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