This is a great new waterless system!
These cartridges remove the ball and washer system of old Delta faucets and replaces it with a ceramic flow regulator. The flow was little slow and I took mine apart to make "flow enhancements" by widening the chambers on the ceramic disc. I over worked the channels and needed a replacement cartridge. I made similar changes, removing less material than the first time and I have a great flow and an easy care system. Service tip, the cartridge needs plumbers grease on the ceramic disc for reassembly after being taken apart or the disc may not move freely for you. This is also the cure for a sticky or rough moving handle, a little "plumbers grease" is a lot cheaper then a new cartridge and may fix a small problem fast and cheap. I did not find this fix on you tube, it is my own, When widening the channels on the ceramic disc I used a dremel with diamond bits from "Harbor Freight" ($6). and it is better to try to deepen the channels than to widen them, the first try I made them too wide and the cartridge dripped when shut off and that was the only reason I needed a replacement. I like the new system, the cartridge is easily serviceable for normal care and easily replaced for those persons without mechanical abilities.
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