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American Standard 51091-0070A Reliant Pressure Balance Shower Cartridge

White plastic body with black rubber seals green seats and grey plastic top.
White plastic body with black rubber seals green seats and grey plastic top.

chat iconWHAT OUR CUSTOMERS SAY…

“Fantastic! I walked in with parts to the faucet in my vintage sink and walked out with everything I needed. Chain hardware stores suggested I get a whole new sink and/or would not be able to do it without a plumber. The employee at Noels took a quick look, knew what it was, and had it in stock. I was able to fix my sink in two minutes with their help! ”
-Elizabeth A.
03/14/2021

$61.27

 

This Pressure Balance Unit maintains a constant output temperature in response to changes in hot and cold water supply pressure. This means there’s less chance you’ll experience dramatic changes in water temperature. The diaphragm system with integrated check valves is engineered to eliminate cross flow and this Pressure Balance Unit is also designed to avoid failure due to mineral deposits, so it is ideal for use in hard water areas.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

SKU: 16538A Category: Tag:

American Standard 051091-0070A Pressure Balance Cartridge is a genuine OEM replacement part designed for use with the Reliant+ and Reliant 3 bath and shower faucet series. This unit is primarily engineered to stabilize water temperature and prevent sudden fluctuations that can lead to accidental scalding.

 

51091-0070A

 

  • Plastic construction for durability
  • Hot/cold cartridge for your tub and shower
  • Helps prevent accidental scalding
  • Easy to install
  • Pressure balancing kit – includes screws & disk
  • For use with American Standard Reliant Plus bath and shower trim kit

 

Common questions about this product

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended part.

Is this the correct item for my application? chevron-icon

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

 

We will make sure you have the right part.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“These people were extremely helpful in taking me through replacing a 25 year old hard water frozen cartridge on my Philrich sink faucet. They were able to identify the correct part I needed from a photo I sent (I had it figured out wrong). I was pleasantly surprised they had an obscure part like this, but they also told me how to extract the old one when I couldn’t get it out. They said to unscrew it after I had concluded from YouTube the old cartridge was supposed to just slide out. It threaded out as they said and saved me buying a cartridge extractor and a hernia. The whole experience has been excellent. ”
-Pete L.
03/10/2026