Prior design was better
Every few years I need to clean the cartridge because of an accumulation of minerals. After the last cleaning, the water temperature was initially very hot, then by the end of the shower had diminished to lukewarm. So, I bought this replacement. It does maintain a fairly constant temperature, buy the flow rate is somewhat lower than the original. The original used metal screens for the water to enter the cartridge through while this replacement uses what looks to be a composite material with holes in them. It looks like the screens were capable of passing more water through. They probably changed the design to counteract the mineral accumulation issue. The original was about 10 years old. I cleaned it by soaking in white vinegar for about a half hour. As a side comment, after initially installing the fixture we found the flow rate to be somewhat less than desired so removed the flow restriction washer.
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