The doulton 3-way mixer tap is designed to pair with any model from our under sink water filter systems range. The dual lever allows for a separate flow of freshly filtered water, so that you can ensure you're only filtering what's needed. Your hot and cold water still works the same, on a separate line accessed on the other side of the tap unit. Inside the 3-way water filter system is a ceramic disk valve and integral aerator, reducing splash and enhancing delivery. And on the outside of these three-way water filter mixer taps, there’s a chrome-plated shank and drinking water levers as well as an led light to let you know when it’s time to change the filter. 3-Way filter tap in polished, chrome finish led filter replacement indicator dual lever three-way mixer tap ceramic disc cartridge our tri-flow 3-way tap uses dedicated internal pathways for hot, cold, and filtered water, preventing cross-contamination between filtered and unfiltered water. These dedicated pathways may result in a slightly lower flow rate than a standard mixer tap. Recommended inlet pressure: 22 90 psi 1.5 6 Bar for hot, cold, and filtered water for optimal performance: ensure the hot and cold water inlet pressures are balanced equal maximum hot water temperature: 70 c