How do I identify my Delta shower cartridge?
The model number on the package by the UPC code or may be found on a supply line tag. We also have an online tool to help identify the model. The model number is on all packaging, some faucets, and all installation instructions provided with your faucet. On the packaging, look near the UPC code or the top of the box.
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How do I identify a Delta shower valve?

One way to find a Delta Plus model is to go to the Brizo website. Even though they’ve been rebranded, most Delta shower faucets will have their name on the drain cap or plate. Older models may also have the name MASCO on them.
Are all Delta shower cartridges the same?
Delta Trim Kits are arranged into different series based on the Cartridge they include. Monitor 14, Monitor 17, and Monitor 17T Series refer to differences in the Shower Cartridge included with the Trim Kit. We will be discussing the Cartridges more in detail later.
How do I know what kind of shower valve I have?
Count the Number of Shower Faucet Handles Often, the type of shower faucet and handle(s) will indicate what kind of shower valve is behind it. Zero handles may imply a shower panel faucet with buttons to control water flow and temperature.

How do I identify my shower valve?
Are shower valves interchangeable?
You can identify the manufacturer of the shower valve you have by removing and checking the cartridge for the brand name. Do not try to mix and match with manufacturers when it comes to shower faucet and valve parts. The different brands’ faucet and valve types and sizes are not interchangeable.
Are shower cartridges universal?
Cartridges aren’t interchangeable among different faucets, so if you decide you need a replacement, you need to know its part number so you can order it from your plumbing supplier or online. That number is usually available on the manufacturer’s website in the online version of the owner’s manual for your faucet.