Cold Ceramic Cartridge for Altmans Phylrich & Sigma OLC4 CI 18.30.029

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

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

$39.27

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, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

SKU: 80093 Category: Two Handle Ceramic Cartridges Tags: Altmans, Paul, Phylrich, Sigma Faucet

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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

Yes, this aftermarket part will replace your OEM 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…

“I have come here as a maintenance technician countless times. NOT ONCE did these guys fail to impress me with their knowledge. They are across town for me and I don’t complain due to their unmatched service. I can bring in a busted chewed up cartridge or part and within 10 seconds the guys are like “ yup we have one right over here” and will bring me the exact match from what I had. Simply top tier. -SNS management ”

-Isaac G.

06/15/2024