American Standard 2-Way In-Wal...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$234.77
$201.56
American Standard 2-Way In-Wall Diverter Rough-In Valve With 2 Discrete Functions - AMS-R422

American Standard 2-Way In-Wall Diverter Rough-In Valve With 2 Discrete Functions - AMS-R422

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Model: R422
Selected Finish is

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

$234.77
$201.56
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2-Way In-Wall Diverter Rough-In Valve With 2 Discrete Functions
  • Durable Cast Brass Valve Body is excellent for high-use applications and prolonged contact with water
  • Controls water flow between 2 outlets (shower or sprays)
  • 1/2" NPT inlets/outlets. 2 Discrete functions. Less Handle
  • Does not allow for shared flow between shower outlets
  • Limited Lifetime Warranty on Function and Finish
  • Wide selection of ADA Approved Trim
  • Trim must be ordered separately
  • Compatible with: Town Square Shower Trim Kit, Serin Shower Trim Kit, Green Tea Shower Trim Kit, Moments Shower Trim Kit, Times Square Shower Trim Kit, Berwick Shower Trim Kit with Lever Handle, Berwick Shower Trim Kit with Cross Handle, Portsmouth Shower Trim Kit with Lever Handle, Portsmouth Shower Trim Kit with Cross Handle, Quentin Shower Trim Kit

Manufacturer Resources

Spec Sheet

Product Specs

Product Group:
Washroom/Bath Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Rough In Valve
Department:
Plumbing
Parts and Accessories Type:
Rough-In Kit
Application:
Toilet

American Standard R422 – Frequently Asked Questions

1) Does the American Standard R422 rough-in valve come with a handle or trim?
No. The R422 is the in-wall valve body only, supplied less handle. Trim has to be ordered separately. It works with the Town Square, Serin, Green Tea, Moments, Times Square, Quentin, Berwick (lever or cross handle) and Portsmouth (lever or cross handle) shower trim kits, and American Standard offers ADA approved trim among those options. Plan the trim order alongside the rough-in so the finish carrier is on site at trim-out.
2) What pipe size and connection type does the R422 in-wall diverter valve use?
All inlets and outlets are 1/2 inch NPT, so it threads directly to 1/2 inch iron pipe size adapters off copper, PEX or brass stub-outs. Four ports total: supply in and two outlets for the two functions.
3) Can I run the showerhead and body sprays at the same time off this American Standard diverter?
No. The R422 is a 2-way diverter with two discrete functions, meaning it sends water to one outlet or the other and does not allow shared flow between the shower outlets. If the design calls for running a rain head and sprays simultaneously, you need a shared-function diverter or a separate volume control per outlet instead.
4) Is a diverter valve like the R422 a substitute for the shower mixing valve?
No, and this is the most common ordering mistake on multi-function showers. The R422 only directs water between two outlets; it does not mix hot and cold or provide pressure balance or thermostatic control. It installs downstream of a separate shower valve, so a full rough-in is the mixing valve plus this diverter.
5) Is the R422 valve body durable enough for a hotel or multi-family shower?
The body is cast brass, which American Standard calls out for high-use applications and prolonged water contact. That is the construction spec property managers and hospitality MRO buyers look for when standardizing shower rough-ins across a building, since the body stays in the wall long after trim gets swapped.
6) What is the American Standard part number I should quote for this 2-way in-wall diverter?
Order it as American Standard R422. That is the manufacturer part number for the 2-way in-wall diverter rough-in valve with two discrete functions, less handle.
7) Can I use this diverter to feed three shower outlets?
No. The R422 handles two outlets only, one function per position. For a three-function shower you need a 3-way diverter or a second valve. Keep in mind the two outlets here are mutually exclusive, so each additional function needs its own port and its own dedicated supply run in the wall.
8) Why does the R422 diverter valve list a finish of NO FINISH?
Because nothing on it is visible once the wall is closed. The valve is the rough-in body only, so it ships without a decorative finish; the finish you see in the shower comes from the separately ordered trim kit. Pick the finish at the trim, not here.
How fast can I get the American Standard R422 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 American Standard R422 come with a warranty?
Absolutely. The American Standard R422 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 American Standard R422?
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 American Standard R422 from ZenSupply?
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