The Doulton W9220402 is a replacement Super Sterasyl ceramic candle filter designed for use in Doulton gravity-fed countertop and undersink systems, including the Doulton HIP, HIS, and SS-1 housings. It features a standard 7-inch ceramic candle with a short mount thread, making it a direct drop-in replacement for older Sterasyl elements in compatible Doulton housings.

The Doulton W9220402 has an absolute micron rating of 0.9 microns and a nominal rating of 0.5 microns. Its Super Sterasyl ceramic shell mechanically filters out fine sediment, rust, cysts, and pathogenic bacteria (>99.99% removal of E. coli, Cholera, Typhoid, Salmonella, and Shigella), while the inner activated carbon core reduces chlorine, bad taste, and odor.

Yes. The Doulton W9220402 Super Sterasyl ceramic element is tested and certified to NSF/ANSI Standard 42 for aesthetic effects (chlorine, taste, and odor reduction) and NSF/ANSI Standard 53 for health-related contaminant reduction, including cysts and turbidity. Doulton ceramic candles are also manufactured in an ISO 9001 certified facility in the UK.

The Doulton W9220402 has a rated filtration life of approximately 600 gallons or 6 months, whichever comes first, under typical municipal water conditions. Because it is a ceramic element, the outer shell can be cleaned multiple times with a soft brush under running water to restore flow rate and extend usable service life before replacement is required.

Before first use, remove the W9220402 from its packaging, rinse the ceramic shell under cool tap water, and scrub lightly with a clean soft brush to remove any ceramic dust. Install the candle into your Doulton housing using the short mount thread, hand-tighten the wing nut, and flush the system for 10–15 minutes (approximately 2–4 gallons) to purge carbon fines and air. After flushing, your Doulton system will deliver clean, filtered water at full efficiency.