Zurn — All Water Products

Zurn Industries (Milwaukee, Wisconsin, founded 1900) is one of the largest US commercial plumbing brands — the dominant supplier of commercial flush valves (the metal valves on commercial diaphragm-flush toilets), wall-hung toilet carriers, sensor-flush systems, and floor drains across US offices, hotels, schools, and hospitals. The Zurn toilet line is primarily commercial-spec: wall-hung bowls designed to mount on Zurn-supplied steel carriers, with Zurn diaphragm flush valves controlling the flush. Residential Zurn toilet presence is small (the brand doesn't target Home Depot or Lowes channels), but the commercial install base across US is enormous — if you've used a public restroom in the last week, there's a strong chance the flush valve was a Zurn.