A.Y. McDonald 72082-WS Quarter...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.92
A.Y. McDonald 72082-WS Quarter-Turn Supply Stop Valve, 1/2" x 3/4"

A.Y. McDonald 72082-WS Quarter-Turn Supply Stop Valve, 1/2" x 3/4"

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Model: 72082-WS

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

$18.92
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A.Y. McDonald 72082-WS Quarter-Turn Supply Stop Valve, 1/2" x 3/4"

The A.Y. McDonald 72082-WS is a quarter-turn supply stop valve sized 1/2" x 3/4", built for rough-in and finish plumbing work where a plumber needs a reliable, fast-operating shutoff between a supply line and a fixture connection. As a quarter-turn stop, it allows the installer to move from fully open to fully closed with a single 90° turn of the handle, which speeds up service calls and reduces wear compared to older multi-turn stem designs. The 1/2" x 3/4" sizing lets this stop bridge a smaller supply line into a larger outlet connection, a common configuration behind washing machines, water heaters, and other fixtures that require a 3/4" outlet from a standard 1/2" supply. A.Y. McDonald is a long-established name in plumbing and waterworks components, and this stop is intended for the same behind-the-wall, under-the-fixture rough-in environment as the rest of the brand's supply and shutoff product lines.

Key Features

  • Trade Size: 1/2" x 3/4" connection, matching a common supply-to-fixture transition used in residential and light commercial installations.
  • Quarter-Turn Operation: A 90° turn moves the valve from open to closed, giving plumbers and service techs a quick, positive shutoff without repeated hand-cranking.
  • Supply Stop Configuration: Designed to install inline between a water supply line and a fixture connection point, providing a dedicated local shutoff for maintenance or fixture replacement.
  • A.Y. McDonald Build Quality: Manufactured by A.Y. McDonald, a recognized supplier of plumbing and waterworks components for professional trade use.
  • Model 72082-WS: Identified in manufacturer documentation under the AYM 5421-391 cross-reference, useful for matching replacement stops to existing rough-in installations.

Technical Specifications

  • Trade Size: 1/2" x 3/4"
  • Operation: Quarter-Turn
  • Model Reference: 72082-WS / AYM 5421-391
  • Refer to manufacturer documentation for complete technical specifications, including pressure and temperature ratings not stated in this listing.

Typical Applications

  • Local shutoff for washing machine and appliance supply connections
  • Residential and light commercial rough-in plumbing
  • Fixture supply line service and replacement work
  • Renovation and new construction supply runs requiring a dedicated stop valve

Why A.Y. McDonald?

A.Y. McDonald supplies plumbing professionals with rough-in components built for the demands of daily trade use, and the 72082-WS quarter-turn supply stop continues that focus by giving installers a straightforward, fast-operating shutoff for 1/2" x 3/4" supply-to-fixture connections. For plumbers who need a dependable stop valve they can install behind the wall or under a fixture without complication, this A.Y. McDonald model offers a known quantity from a manufacturer with a long track record in the plumbing supply trade.

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Manufacturer Resources

Product Specs

list_batch:
AYM-20260924
Product Type:
Supply Stop
Configuration:
Quarter-Turn
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Plumbing
Product Size:
1/2" x 3/4"

A.Y. McDonald 72082-WS – Frequently Asked Questions

1) What size connections does the A.Y. McDonald 72082-WS supply stop have?
The 72082-WS is a 1/2 inch by 3/4 inch supply stop, so it takes a 1/2 inch supply line in and gives you a 3/4 inch outlet at the fixture side. That transition is the reason people reach for it: appliances that want a 3/4 inch hookup off a standard 1/2 inch branch.
2) Can I use a 1/2 x 3/4 quarter-turn stop for a washing machine hookup?
That is one of the jobs the 72082-WS is meant for. Washing machine and appliance supply connections typically land on a 3/4 inch hose thread off a 1/2 inch branch, which matches this stop's 1/2 inch by 3/4 inch sizing, and it gives that appliance its own local shutoff so you can pull the machine without killing water to the rest of the unit.
3) Is the 72082-WS a quarter-turn stop or a multi-turn stem stop?
Quarter-turn. One 90 degree move of the handle takes it from full open to full closed, which is faster on a service call than cranking an old multi-turn stem stop and puts less wear on the working parts. If you specifically want a multi-turn stop for throttling flow, this is not that valve.
4) What part number do I order to match an existing A.Y. McDonald rough-in stop?
Order by model 72082-WS. A.Y. McDonald documentation also carries it under the 5421-391 cross-reference, so if the stop already in the wall is tagged 5421-391 you are looking at the same item.
5) Where does a supply stop like the 72082-WS get installed?
It goes inline between the water supply line and the fixture connection, the behind-the-wall or under-the-fixture position in a rough-in. The point is a dedicated local shutoff so a fixture or appliance can be serviced or swapped without isolating the whole run. Property managers standardizing a building on quarter-turn stops usually do it for exactly that reason.
6) Is the 72082-WS suitable for light commercial work or residential only?
Both. The 1/2 inch by 3/4 inch supply-to-fixture transition is a common configuration in residential and light commercial installs, and the valve is intended for new construction supply runs, renovation work, and fixture replacement service alike.
How fast can I get the A.Y. McDonald 72082-WS 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 72082-WS come with a warranty?
Absolutely. The A.Y. McDonald 72082-WS 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 72082-WS?
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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