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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.

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“Y'all are amazing. I live in Texas and it's faster to order express from Noel's than go to local parts stores. Customers can text Noel's a picture of the part they need and Noel's will find that part or the equivalent and text the link. They have 2-3 day shipping available. The staff answers the phone quickly, politely and they know their stuff! The unit I needed plumbing parts for was built in the 30s. No matter, Noels has me covered. I highly recommend them. Thank you Noel's for your efficient, old school excellence combined with current technology! You have saved me so much time, money, and aggravation! A++++++ ”
-Thalia,
07/03/2026

$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…

“It is so nice to see you guys are still rocking and providing the best service for unique plumbing parts. I first used you guys 20 plus years ago when my brother turned me on to you. I live in Nashville now and was searching the entire region for a particular cartridge and you are the only one that had it. Hands down there's not many like you and you've always provided a great service and I'm glad to see you doing it now even online! ”
-James
01/11/2022
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