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Are All Shower Valves the Same?

Maya Lin-Takahashi • • 7 min read
Are All Shower Valves the Same?
First, you absolutely CANNOT mix manufacturers on trim and rough-in valves. In fact, even within one manufacturer, they have many valves and the trims are not interchangeable. Shower sets are not always sold as separate trim and rough.

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Consequently, what are the different types of shower valves?

Modern showers have two different types of temperature control valves as well as diverters for multiple component systems and either digital or manual control systems.

  • Temperature Regulating Valves.
  • Diverters and Transfer Valves.
  • Digital Controls.
  • Manual Control Systems (Trim)

Also, how do I know what kind of shower valve I have? Look at the center of the trim plate behind the shower handle to find a brand name or manufacturer symbol. If you see a "K," the faucet is a Kohler unit; an "M" signifies Moen. American Standard, Delta and Price Pfister typically print their entire name on the faucet.

Keeping this in consideration, are all shower valves universal?

They are all universal and all Delta Shower Trim Kits will fit every single one of these valves.

Are all shower cartridges the same?

There is absolutely NO difference between the Moen 1222 vs 1222B replacement cartridges. They are both the replacement part cartridge for the Posi Temp Moen shower valve. They are made from the same parts, the only difference is their packaging and model number.

Related Question Answers

Do I have to replace the shower valve?

Don't assume you can simply install a new tub/shower faucet over an existing valve. So if you're replacing your shower and tub faucets, some planning is required. However, it's not too complicated once you know the basics: Most trim kits require a specific model valve from the manufacturer who makes the kit.

Where is shower valve located?

This supply valve is usually near the bottom left side of the toilet tank. For showers/tubs, look around the tub or shower for an access panel. It may be on the other side of the wall from the tub or shower.
Maya Lin-Takahashi
Author

Maya Lin-Takahashi

Maya is a hardware enthusiast who tests and reviews smart home devices, smartphones, wearables, and audio gear. She focuses on practical consumer value and build quality.