Pressure Balance Shower Cartridge for Sigma Faucet 18.30.893

chat iconWHAT OUR CUSTOMERS SAY…

“We were looking for a cartridge that not only matched the bottom holes but that would have the splines & you knew our cartridge had an additional piece which would not have spines on the new replacement We received the replacement cartridge yesterday; we replaced the old today & happy to say it fits perfect. Thank you for your great information and the speedy shipping. Should we need other supplies in the future, we will certainly contact your business. ”
-Leah l.
01/26/2023

$44.27

 

The Sigma 18.30.893 cartridge is a pressure balance shower cartridge used in Sigma and Sonoma Forge shower valves to control water flow and temperature. It is specifically designed for use with Sigma pressure balance shower valves purchased from mid-2014 onwards.

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: 21915-2 Category: Tag:

Pressure Balance Shower Cartridge for Sigma Faucet

 

18.30.893

 

  • Used in pressure balance style faucets to help maintain a nearly constant water temperature.
  • It is a reversible cartridge; if the hot and cold water are reversed after installation, the cartridge needs to be rotated 180 degrees and reinstalled.
  • For use with Sigma pressure balance shower valves purchased from mid-2014 to present. It also fits certain Sonoma Forge concealed shower valves.
  • 3″ Length
  • Square or regular broach

 

Customer submitted images. 

 

Common questions about this product

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM 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.

 

 

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

Yes, this is the OEM recommended part.

chat iconWHAT OUR CUSTOMERS SAY…

“Holy guacamole! They had a part moen had out of stock, shipped the next business day, and got to me the next day Ohio -> Tennesse. Super happy, double packed for safe shipment. I couldn't be happier unless they installed the part for me! ”
-Brian D.
06/08/2025