513-721-5286 | 1-888-Ask-Noel | Mon-Fri: 8:00 AM – 5:00 PM
Account

Pressure Balance Shower Cartridge for Sigma Faucet 18.30.893

Tan plastic cartridge with blue top red limit stop brass stem black rubber o-ring and black rubber seal.
Pressure Balance Shower Cartridge for Sigma Faucet 18.30.893 - Image 2
Pressure Balance Shower Cartridge for Sigma Faucet 18.30.893 - Image 3
Pressure Balance Shower Cartridge for Sigma Faucet 18.30.893 - Image 4

chat iconWHAT OUR CUSTOMERS SAY…

“Hey these guys are awesome! If you need a part for a fixture they have it send a picture and they can tell you what it is, they know their stuff, they have the weird obscure things you can't find unless you get a whole trim kit or whatever. Worth the trip and the money. They save you tons of time definitely visit ”
-Justin H.
06/05/2026

$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…

“Ordered the wrong part for a faucet, texted them about and pictures of what I needed, they let me do a refund and they didn’t have the exact part but sent me a link to Kohler who did have it. They’re so helpful, I’ll totally order from them again. I’ll probably text first next time so I get the right thing in the first place :) ”
-Rachelle S.
09/14/2024
Account