High flow thermostat cartridge, universal inlets for 3/4" and 1/2" connections (built-in female threads for 1/2" connections and male threads for 3/4" connections), reversible service check valves with filters and improved stop mechanism, italian made nickel plated solid brass rough, Vernet thermostatic cartridge and Fluehs diverter cartridge, shut-off valve outlets: connections right, left or both sides simultaneously, removable NPT plug at the top for an extra independent shut-off valve (#1206) or diverter with stop (61934) connection, vertical water inlets for a fast and efficient installation, safety temperature stop, preset at 38˚C / 100˚F