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Cold Ceramic Cartridge for Altmans Phylrich & Sigma OLC4 CI 18.30.029

Bright brass cartridge with black oring white ceramic discs and blue bottom washer.

chat iconWHAT OUR CUSTOMERS SAY…

“Outstanding fast delivery on two pieces of an ancient Wolverine bath stem for Kohler - from the early 40s I think. The new one has a different body design, but it screwed directly into the old hot/cold tree and was the exact 6" length. Forty eight hours after installation now, and all remains fine. Also, kudos to the people who set up the website and ordering process. Great work - clear photos and info ! PS: I'm not an employee or family...lol. I retired from electrical wholesaling here outside Chicago and I appreciate a good job. ”
-JM C.
07/31/2026

$43.17

 

The Altmans OLC4 CI (also known as part number 18.30.029) is a cold-side 1/2″ ceramic disc faucet cartridge used across several premium plumbing brands. It is primarily a 1/4-turn replacement part that opens in a clockwise direction.

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.

SKU: 80093 Category: Tags: , , ,

The Altmans, Phylrich, and Sigma Cold Ceramic Cartridge (Part 18.30.029 / OLC4 CI) is a high-precision replacement valve designed to restore leak-free performance to high-end bathroom and kitchen faucets.

 

OLC4 CI     18.30.029

 

  • It is used on a variety of Altmans branded faucets and is interchangeable with specific cartridges from Phylrich and Sigma, such as the Sigma 18.30.029 and Phylrich LC499CNL.
  • 1/4-turn
  • 2 5/8″ length
  • 16 point broach

 

 

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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“Outstanding fast delivery on two pieces of an ancient Wolverine bath stem for Kohler - from the early 40s I think. The new one has a different body design, but it screwed directly into the old hot/cold tree and was the exact 6" length. Forty eight hours after installation now, and all remains fine. Also, kudos to the people who set up the website and ordering process. Great work - clear photos and info ! PS: I'm not an employee or family...lol. I retired from electrical wholesaling here outside Chicago and I appreciate a good job. ”
-JM C.
07/31/2026
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