How to Identify Your Delta Shower Valve: Series, Cartridge, and Generation [2026]

Knowing how to identify your Delta shower valve before you buy any cartridge is the most important step in a Delta shower repair. Delta’s system uses five different cartridges across three series — and the wrong one won’t fit. Two of those cartridges look nearly identical in your hand and are not interchangeable. Get the identification right and the repair takes 30 minutes. Get it wrong and you’re making a second hardware run.

The identification breaks into two decisions: which series (13/14, 17, or 17T) and which generation (pre-2006 Monitor-era or post-2006 MultiChoice-era). Once you have both answers, the correct RP part number is locked.

Series	Production era	Cartridge	Key trait
13/14 Monitor	Before March 2006	RP19804	Single handle, rotates for temperature
13/14 MultiChoice	After March 2006	RP46074	Single handle, MultiChoice trim
17 Monitor	Before March 2007	RP32104	Dual-function, white cartridge top
17 MultiChoice	After March 2006	RP46463	Dual-function, gray cartridge top
17T TempAssure	After March 2016	RP47201	Thermostatic, separate volume control

This article walks through four identification methods in order from “no tools required” to “handle removed” — so you can pinpoint your correct RP number without buying anything first.

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How to Identify Your Delta Shower Valve: Start With the Visible Trim

The first check is the easiest — look at what’s on the wall without removing anything.

A visible Delta logo on the handle, escutcheon, showerhead, or tub spout confirms the brand family. Delta puts its logo on finished trim surfaces. A quick visual scan on any of those surfaces — often the showerhead neck or the base of the handle — identifies this as a Delta rather than a Moen, Kohler, or Pfister.

The logo tells you the brand but not the cartridge. Delta’s R10000 MultiChoice rough valve is designed as a “valve body only” — the trim kit, cartridge, and rough valve are separate purchase decisions. A Delta-looking escutcheon cannot be treated as proof that the behind-wall valve accepts every Delta cartridge. Delta also explicitly states that the R10000 is only guaranteed to work with Delta valve trim kits, and a Delta trim installed on a non-Delta rough valve is possible in homes that have had mixed repairs over the years.

Treat the logo as the first clue, not the final answer.

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Count the Handles: 13/14 vs 17 vs 17T

After confirming the Delta brand, count the control functions. This tells you which series.

A single rotating handle — one handle that turns from cold to hot — is a 13/14 Series pressure-balance configuration. The handle controls temperature only at full output flow. According to Delta’s RP46074 product page, the 13/14 cartridge “controls temperature at full output flow.” This is the most common Delta shower setup in homes built from the 1990s through the mid-2010s.

A larger volume handle plus a smaller temperature handle points to the 17 Series. Delta’s RP46463 page describes this configuration as allowing “separate volume and temperature control” — the signature dual-function layout of the 17 Series. If your shower has two distinct controls — one that turns the water on and adjusts flow, and a separate one that sets temperature — you’re in 17 Series territory.

A thermostatic temperature knob plus a separate volume control is the 17T TempAssure. Delta’s RP47201 page says the TempAssure cartridge “functions like a thermostat and allows separate volume and temperature control.” The 17T is the highest-end configuration and is typically found in remodels and custom shower builds after 2016.

The handle count narrows the series. The generation — Monitor versus MultiChoice — still requires one more step for the 13/14 and 17 families.

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Remove the Handle: Cartridge Color and Shape Are the Decisive Clue

For the generation question, the cartridge color visible once the trim is removed is the most reliable tell. Delta says so on its own product pages.

Before removing the handle, shut off the water supplies. Delta’s RP19804 maintenance and installation sheet opens with that step and notes that “plumber installation is recommended.” For identification purposes, you only need to go far enough to see the cartridge face — handle off, sleeve off, bonnet visible.

For the 17 Series, the cartridge top color is the call. Delta’s RP32104 FAQ states it directly: RP32104 has a white top and RP46463 has a gray top. That’s the fastest way to distinguish old Monitor 17 from newer MultiChoice 17 once the trim is removed — no model number or installation date required.

For the 13/14 Series, the production-era boundary is the deciding factor. Delta says RP19804 fits “Monitor 1300/1400 Series tub and showers produced before March 2006” and RP46074 fits “MultiChoice 13/14 Series tub and showers produced after March 2006.” If you know the installation date — from building records, the original instruction sheet, or a date code molded onto the cartridge body — the March 2006 boundary is the definitive call.

If the cartridge has a printed or molded part number visible on the body itself, compare it directly against the RP numbers in the table above. That’s the most direct confirmation you can get.

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Delta’s Five Cartridge Families: Which RP Number You Actually Need

Here is the complete Delta shower cartridge map, drawn from Delta’s own product pages.

RP19804 — Monitor 1300/1400, before March 2006. Delta’s product page labels this “Cartridge Assembly – 1300/1400 Series (04/2006 and earlier).” (RP19804) Single-handle pressure-balance. If your Delta 13/14 shower was installed before mid-2006, this is the cartridge.

RP46074 — MultiChoice Universal 13/14, after March 2006. Delta calls this the “Cartridge Assembly – MultiChoice Universal – 13/14 Series.” (RP46074) This is the correct cartridge for the large majority of Delta single-handle showers installed in the past two decades.

RP32104 — Monitor 17, before March 2007. Delta labels this “Monitor 17 Series (04/2006 and earlier)” and notes it also works with 1500 Series produced after 1995. (RP32104) The white cartridge top is the visual tell once you have the trim off.

RP46463 — MultiChoice Universal 17, after March 2006. Delta calls this the “MultiChoice Universal – 17 Series” cartridge with separate volume and temperature control. (RP46463) Gray cartridge top distinguishes it from the RP32104.

RP47201 — MultiChoice 17T TempAssure, after March 2016. Delta describes this as the “TempAssure Thermostatic Cartridge – MultiChoice 17T Series.” (RP47201) For thermostatic valves only — the separate flow-and-temperature control signature is the tell.

One important note on the R10000 rough valve: Delta’s R10000-UNBX page shows the rough valve as a “valve body only” designed to accept single-function, dual-function, or thermostatic trim. The rough valve alone does not tell you which trim or cartridge generation is installed on top of it. You still need to work through the series and generation identification.

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How to Identify Your Delta Shower Valve: Quick Decision Tree

Use this as your field checklist before ordering anything.

1. Is there a visible Delta logo? Yes → Delta valve confirmed. No logo → check for Moen, Kohler, or Pfister markings and use those manufacturers’ lookup paths (see the next section).
2. How many control functions? One rotating handle for temperature at full flow: 13/14 Series → go to step 4. Volume handle plus temperature handle (two distinct controls): 17 or 17T → go to step 3.
3. Thermostatic or pressure-balance? True thermostatic control (temperature maintains itself without adjustment): 17T → RP47201. Dual pressure-balance controls (flow and temperature both need manual adjustment): 17 Series → go to step 5.
4. 13/14 Series — what is the installation date? Before March 2006: RP19804. After March 2006: RP46074.
5. 17 Series — remove the handle and check cartridge top color. White top: RP32104 (Monitor 17, pre-2007). Gray top: RP46463 (MultiChoice 17).
6. Still uncertain? Before you buy anything, find your exact cartridge with our free Repair Finder — it cross-references the Delta series and generation in one step. Or search the RP number directly in Delta’s Find Parts and Identify Your Product tool.

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

Sometimes the Delta logo is worn, absent, or a past repair installed mixed trim over a different valve body. Here’s the quick scan for other common shower brands.

Moen puts model numbers on the UPC label on the packaging, the instruction sheet, or the side of the retail box — not usually on the installed trim itself. Moen’s parts page offers an “Identify My Product” tool for cases where the model number can’t be located and notes that online product information generally dates back to about 2011. For older Moen showers, a call to 1-800-BUY-MOEN is the recommended path. Moen’s 1222 Posi-Temp cartridge fits single-handle showers with a visible retainer clip above the valve body — the clip-and-cylinder layout is a strong Moen Posi-Temp indicator. Moen’s 1214 M-Core 4 Series uses a stacked two-handle design with a longer inner handle for volume and a shorter front handle for temperature.

Kohler may stamp a model number on the product itself, the packaging, or related literature. Kohler’s service parts page offers photo-based product identification through the Kohler Scout app — still in beta, so treat it as a strong lead rather than the only confirmation before buying a cartridge. Kohler groups shower/bath valves in their own product category, so narrow the search to valves before selecting parts.

Pfister separates Tub & Shower, Shower Components, and Valves in its replacement parts page. Narrow the category first, then enter a model number if you have one. Pfister recommends contacting customer service before ordering if warranty status is uncertain.

Mixed trim warning: A Delta trim installed on a non-Delta rough valve is possible in homes that have had layered repairs. Delta states that the R10000 rough valve is only guaranteed to work with Delta valve trim kits — so the trim brand on the wall and the valve body behind it may not match. When identification is ambiguous, the cartridge and valve body are more authoritative than the showerhead or tub spout.

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When You Need a Plumber for Delta Shower Valve Identification

Some identification steps genuinely call for a plumber — not because the task is complicated, but because conditions in the wall can make it risky or physically impossible for a homeowner.

Call a plumber when the cartridge must be removed to identify it and you can’t confirm a safe shutoff condition, when the bonnet is seized and won’t turn with normal force, when the cartridge is stuck and won’t pull after the bonnet is off, when the valve body appears damaged or is leaking from behind the finished wall, or when the wall will need to be opened for access.

Delta’s own RP19804 maintenance sheet advises that “plumber installation is recommended” — a reasonable default for any shower valve work beyond a straightforward cartridge swap in a cooperative valve.

A focused diagnostic visit can also be cheaper than buying the wrong cartridge. RP19804 and RP46074 are not interchangeable. RP32104 and RP46463 are not interchangeable. According to HomeAdvisor’s 2026 plumber cost guide, plumber service-call fees run $100–$250 as a trip fee, hourly rates from $45–$200/hr, and the average total plumber visit runs around $340. An identification-only call should run toward the low end of those ranges. For more on pricing context, see our guide on how much it costs to replace a shower valve.

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What to Do After You’ve Identified Your Delta Shower Valve

Once you have the correct RP number confirmed, the next step is ordering the cartridge and carrying out the replacement. Buy directly from a plumbing supply house or a home improvement retailer using the exact RP number — Home Depot and Lowe’s both stock the common Delta cartridges, but use the manufacturer page to confirm compatibility first, not the retailer’s cross-reference.

If you’re working through multiple bathrooms with different brands, our shower valve identification guides for Symmons shower valves and Grohe shower valves use the same step-by-step format. The full shower repair cluster — including cost guides and step-by-step replacement how-tos — is at our Pillar 3 shower repair hub.

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Sources

• Delta Find Parts and Identify Your Product
• Delta R10000-UNBX MultiChoice Universal Rough Valve
• Delta RP19804 Monitor 1300/1400 Cartridge (pre-March 2006)
• Delta RP19804 Maintenance and Installation Sheet
• Delta RP46074 MultiChoice Universal 13/14 Series Cartridge
• Delta RP32104 Monitor 17 Series Cartridge (pre-March 2007)
• Delta RP46463 MultiChoice Universal 17 Series Cartridge
• Delta RP47201 TempAssure MultiChoice 17T Cartridge
• Moen Parts and Model-Number Guidance
• Moen 1222 Posi-Temp Single-Handle Shower Cartridge
• Moen 1214 M-Core 4 Series Cartridge
• Kohler Service and Replacement Parts
• Pfister Replacement Parts
• HomeAdvisor Plumber Cost Guide 2026

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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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