How to Identify Your American Standard Shower Valve: Trim, Cartridge, and Rough-In Valve [2026]

How to identify your American Standard shower valve starts with a fact that trips up a lot of homeowners: the visible trim, the cartridge behind it, and the rough-in valve behind the wall each carry a different model number. American Standard’s own product page lists the current Colony PRO trim kit as model TU075507.002, but that same trim’s official repair parts diagram identifies the cartridge you’d actually need to reorder as a completely different number — M970654-0070A. American Standard Colony PRO trim American Standard Colony PRO repair parts diagram

That gap matters more on a shower valve than on almost any other fixture, because a shiny escutcheon can be swapped during a remodel without anyone touching the rough valve behind the tile — so the trim you can see and the valve that actually controls water pressure and temperature are, in effect, two separate identification problems. American Standard Flash rough-in valve This guide walks through where American Standard actually puts its model numbers, how to read the cartridge once it’s in your hand, the company’s own lookup tools, and what to do when none of that gets you a confirmed match.

Clue	What it looks like	Likely valve family	Example part
Product page, box, or trim label	Model number like TU075507.002 (the suffix is a finish code, not a generation)	Depends on trim line	Model-specific
Removed cartridge, round body, ceramic disc	Double ceramic pressure-balance cartridge	Colony PRO / Flash pressure-balance family	M970654-0070A
Rough-in valve behind the wall	Compact brass body, flat back, flush plug, plaster guard	Flash rough-in valve	RU101
No visible marks, older handle names on the parts store	“Colony Soft Handle,” “Colony Handle,” or “Hampton Faucet Handle Adapter”	Older Colony/Hampton/Triumph line	Needs cartridge removal to confirm

Work through these methods in order from easiest (no tools, no water shutoff) to last resort (cartridge removed and compared against the manufacturer’s own diagram), and stop as soon as one gives you a confirmed number.

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How to Identify Your American Standard Shower Valve: Start With the Handle

Begin with the handle, because it’s the least invasive check. Many American Standard shower trims use a lever handle with no large brand text on the faceplate itself, so the logo is more likely to show up on the handle cap, the original packaging, or a product photo than on the escutcheon. American Standard’s official Colony PRO product gallery labels its trim images with the exact current model, TU075507.002, which is the kind of reference point that helps when you’re matching a photo of your own shower to the current catalog. American Standard Colony PRO product photos and model

For older fixtures, the handle name can matter more than anything printed on the escutcheon. American Standard’s parts store lists older handle-specific names — “Colony Soft Handle,” “Colony Handle,” and “Hampton Faucet Handle Adapter” — that don’t appear on current product pages at all. American Standard parts store list If your shower’s handle matches one of those older names, treat the visible trim as a starting clue for the Colony/Hampton/Triumph cluster rather than a confirmed match, and plan on confirming the actual cartridge once it’s removed (see the older-fixtures section below).

Photograph the whole faceplate straight-on before you touch anything. Current American Standard pressure-balance trims — Colony PRO, Edgemere, Studio S, Townsend, Reliant 3, and Serin among them — share the same “double ceramic pressure balance cartridge” description across multiple trim families, so the escutcheon style alone narrows the search but doesn’t confirm the cartridge. American Standard bath and shower trim list

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Method 1: Find the Model Number on the Trim, Escutcheon, or Paperwork

If you still have the box, the installation paperwork, a builder’s spec sheet, or a receipt, the model number on it is the strongest identifier you can get without removing anything. American Standard’s product pages show model numbers in the format TU075507.002, and the company’s own repair parts diagrams explain that the digits after the dot are a finish code, not a generation marker — replace the placeholder YYY in a parts diagram with 002 for polished chrome, 278 for legacy bronze, 295 for brushed nickel, or 243 for matte black. American Standard Colony PRO model TU075507.002 American Standard Colony PRO repair parts diagram

That finish-code convention is useful, but limited — it identifies the color of your trim, not the valve generation or cartridge behind it. The Colony PRO repair parts diagram itself lists several related trim models — TU075500, TU075507, TU075508, TU075507XH, and TU075508XH — while listing the cartridge as a completely separate part, M970654-0070A. American Standard Colony PRO repair parts diagram The trim model gets you to the right family of parts diagrams; it does not by itself confirm the cartridge you need to order.

If you can’t find any paperwork, note the escutcheon’s screw layout and shape before moving on — a two-screw round escutcheon fits several brands and several American Standard generations, so it’s a clue to combine with the handle shape and trim family, not a standalone answer. American Standard Colony PRO trim

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Method 2: Remove the Handle — Cartridge Stem and Retaining Hardware

If the visible trim doesn’t give you a confirmed answer, shut off the water and remove the handle. The stem shape, retaining ring, screw, stop tube, and plaster guard behind it are often better identifiers than anything on the decorative trim. American Standard’s current Flash rough-in valve, for example, uses a stainless steel retaining ring with flats to secure the test cap or cartridge — and the product page is explicit that the cartridge is sold separately from the rough-in valve body. American Standard Flash rough-in valve

That “sold separately” detail is the reason trim and valve identification are two different jobs: the rough-in valve alone won’t tell you the cartridge model, and the current Flash-compatible trim ships with the cartridge included while the rough-in body doesn’t. American Standard Flash rough-in valve For the current Flash family, American Standard’s own pressure-balance cartridge product page identifies the replacement part as M970654-0070A. American Standard Pressure Balance Cartridge for Flash

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Method 3: Cartridge Body Markings — the M970654-0070A Family

Once the cartridge is out, inspect the plastic body, the brass stem, the face, and the area around the retaining screw for molded or printed numbers. American Standard’s own product photos for the Flash pressure-balance cartridge are labeled with the part number M970654-0070A, and the product page lists that same number as the cartridge model. American Standard Pressure Balance Cartridge for Flash

The current Colony PRO trim’s own repair parts diagram points to that same M970654-0070A cartridge, paired with a cartridge screw listed as 078016-YYY0A (again, YYY is the finish-code placeholder). American Standard Colony PRO repair parts diagram This is the core warning worth repeating: the visible trim model TU075507.002 and the internal cartridge model M970654-0070A are two different identifiers, and ordering a part by the trim number alone can produce the wrong item unless you confirm the cartridge against the parts diagram or the removed part itself. American Standard Colony PRO product page

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Method 4: Rough-In Valve Markings — RU101 and the Plaster Guard

If the wall is already open, or you can see the valve body behind the trim, the rough-in valve and plaster guard can identify the generation more reliably than any decorative trim. American Standard’s current Flash rough-in valve is model RU101 for universal inlets and outlets, with related variants RU101SS, RU102, and RU102SS. American Standard Flash rough-in valve

The same product page describes the valve as a cast DZR brass body with a flush plug, a stainless steel retaining ring, a flat back, back-to-back installation capability, a plaster guard, and a rough-in range of 1-3/4 inches to 2-3/4 inches from the finished wall to the back of the valve. American Standard Flash rough-in valve Because the rough-in valve ships with a flush plug and no cartridge, what’s actually installed in your finished shower can depend on which trim and cartridge were added later — so treat the rough valve’s model number as confirmation of the valve generation, not the cartridge. American Standard Flash rough-in valve

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Method 5: Use American Standard’s Own Lookup Tools

Once you have a model number, or a cartridge you’ve matched by appearance, American Standard’s support resources are the next step to confirm it. The company’s home page navigation includes a Parts Store, Shower System Parts, Bathroom Faucet Parts, a LIXIL Specification Tool, a Cross Reference Tool, and a Digital Asset Library. American Standard support and resources navigation The parts store itself exposes searchable part names alongside model numbers — for example, “Pressure Balance Cartridge for Flash” listed as M970654-0070A, and a separate “Cartridge” listed as M970708-0070A. American Standard parts store

Before you order anything, confirm your exact replacement part with our free Repair Finder — it takes less than a minute and can save you a second hardware-store trip on a cartridge that isn’t always in stock locally.

If the online tools don’t resolve it, American Standard’s support navigation includes Help, Register & Warranty Info, and Contact Us links — bring your photos and any candidate part numbers to that conversation rather than guessing from a parts-store search alone. American Standard support navigation

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Older Fixtures: The Colony/Hampton/Triumph Cluster

If your shower predates the current Colony PRO and Flash lineup, the parts store’s older handle names — “Colony Soft Handle,” “Colony Handle,” and “Hampton Faucet Handle Adapter” — are your best search terms, but they’re leads, not confirmed matches. American Standard parts store One part number that turns up as a research lead for this older cluster is A954440-0070A — but American Standard’s own current product pages did not expose a public listing for that number at the time of this research, only for the current Flash cartridge M970654-0070A. Treat A954440-0070A as a starting point to verify against your removed cartridge and the official parts diagram, not as a number to order blindly. American Standard Pressure Balance Cartridge for Flash

American Standard’s parts store is generally the safer place to confirm an older part than a generic marketplace listing, because it ties part names and model numbers directly to the current manufacturer catalog. American Standard parts store When the cartridge for an older Colony/Hampton/Triumph valve is genuinely unavailable, the valve body is damaged, or the trim screws and stops are corroded beyond service, replacing the whole valve is the more practical move — American Standard’s current Flash rough-in valve is designed exactly for that scenario, sold as a rough-in body with separately supplied cartridges and trims. American Standard Flash rough-in valve

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What If You Can’t Find the Brand — Delta, Moen, Kohler, and Pfister

Sometimes the marks are gone entirely, or a past repair mixed trim from a different brand onto an American Standard valve (or the reverse). A quick cross-brand scan helps rule brands in or out. Delta provides a “Find Parts & Identify Your Product” tool under its Service & Parts navigation that can identify a model number or help find the part needed for a specific issue — use it only for Delta fixtures, since Delta parts aren’t interchangeable with American Standard’s Flash or Colony PRO cartridges. Delta Faucet home page service navigation Moen’s shower valves are usually easiest to sort by handle operation and cartridge family: common Moen shower lines include the 1225-style single-handle design, Moentrol, Posi-Temp (which uses the larger 1222 cartridge), and M-CORE (which uses the 1213 cartridge). Moen Incorporated faucet design summary Kohler maintains its own replacement-parts support hub for model and cartridge lookups. Kohler support hub Pfister — formerly sold as Price Pfister — runs a separate parts-support site, and an older “Price Pfister” mark should never be mistaken for an American Standard part. Pfister background

Take a full photo set before assuming a brand match: the whole trim straight-on, the handle side profile, the showerhead, the tub spout, the exposed stem after handle removal, the retaining clip or ring, the cartridge front and side, and the valve body if it’s visible. American Standard’s own pages illustrate exactly why this matters — the Colony PRO product page identifies the trim, the repair parts diagram identifies the cartridge and finish-code logic, and the Flash rough-in page identifies the valve body as a fourth, separate part. American Standard Colony PRO product page

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When to Call a Plumber

Call a plumber when the shower has no accessible stops and the trim has to come off anyway — you don’t want to be pulling a cartridge with no reliable way to shut off the water if something goes wrong.

Call a plumber when the cartridge may break during removal — a seized or corroded cartridge that gets forced can damage the valve body, turning a straightforward identification job into a bigger repair.

Call a plumber when the valve body is behind tile and can’t be visually confirmed without opening the wall, or the fixture is an older pressure-balance valve with parts that may already be discontinued.

The current Flash cartridge (M970654-0070A) and the current Flash rough-in valve (RU101) are distinct part numbers for distinct components, so it’s easy to confuse the trim model, the cartridge model, and the valve model and order the wrong item. American Standard Pressure Balance Cartridge for Flash American Standard Flash rough-in valve Plumber service-call fees vary by metro area, minimum trip charge, and whether the visit includes disassembly or repair, so get a quote for your area before assuming a price — but a short identification visit is often cheaper than the shipping, return time, and lost water-off days from repeated wrong-part orders.

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What to Do Next

Once you’ve confirmed your trim model, cartridge, or rough-in valve, the repair itself follows American Standard’s own parts diagram for that specific part — don’t substitute a similar-looking part from memory.

• Current Colony PRO / Flash family: confirm the exact cartridge (M970654-0070A) against American Standard’s repair parts diagram before ordering.
• Older Colony/Hampton/Triumph fixtures: verify any candidate part number against your removed cartridge and the parts store listing before buying.
• Other brands in the cluster: for the same identification workflow on other shower brands, see our guides on how to identify your Delta shower valve, how to identify your Moen shower valve, how to identify your Kohler shower valve, and how to identify your Pfister shower valve.
• Not sure which brand you have at all: start with our general guide, How to Identify Your Shower Valve and Cartridge.

For the full shower repair cluster — cost guides, diagnostics, and step-by-step replacement how-tos — visit our Pillar 3 shower repair hub.

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Sources

• American Standard Home and Support Navigation
• American Standard Bath and Shower Trim List
• American Standard Shower System Parts List
• American Standard Parts Store
• American Standard Colony PRO Trim Product Page
• American Standard Colony PRO Repair Parts Diagram
• American Standard Flash Rough-In Valve (RU101)
• American Standard Pressure Balance Cartridge for Flash (M970654-0070A)
• Delta Faucet Service and Parts Navigation
• Moen Incorporated Faucet Design Summary
• Moen Tub and Shower Systems Reference
• Kohler Support Hub
• Pfister Background (Formerly Price Pfister)

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Educational content only. Not a substitute for licensed professional advice. Local plumbing codes vary by jurisdiction. Use of any guidance from this guide is at your own risk.

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