American Standard Cartridge 51091-0070A

“Single Control Valve Kit for Kohler K-GP30413” has been added to your cart. View cart

White & grey plastic cartridge with green and black seals.

WHAT OUR CUSTOMERS SAY…

“After trying all over my area, I couldn't find the part for the faucet in my older house. The part I needed was found on the first try on their website and ordering was very easy. It was after hours, but someone responded to my text right away. The part was shipped the next business day. After putting the new part in the faucet works better than it has for years! ”

-Mark B.

06/25/2026

$51.47

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, asknoel@noelsplumbingsupply.com, or via the text widget on this screen.

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Stop leaks and prevent sudden temperature drops in your shower with the American Standard 051091-0070A Pressure Balance Cartridge. This cartridge restores your single-control tub and shower faucets to factory perfection. It is specifically designed to fit American Standard Reliant+ (Reliant Plus) and Reliant 3 shower series valves, ensuring a leak-free seal and dependable operation.

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

Common questions about this product

Yes, this is the OEM recommended part.

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.

WHAT OUR CUSTOMERS SAY…

“Order received and installed. Thank you very much (spoken mentally in my best Elvis voice). Really is nice to know that there is still a business out there that's got their act together! Appreciate the quick service and correct parts shipping. Thanks again.. jP ”

-Jack P.

04/02/2026