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In 1906, William Sloan first made available his "flushometer" style toilet flush valve, incorporating his patented design. [17] The design proved to be very popular and efficient and remains so to this day. Flushometer toilet flush valves are still often installed in commercial restrooms, and are frequently used for both toilets and urinals.
William Elvis Sloan I (October 1867 – June 25, 1961) invented the Flushometer flushing mechanism for toilets and urinals. It is installed in millions of commercial, institutional and industrial restrooms worldwide.
Haas also focused considerable energy on improving the commercial flush valve. These efforts resulted in a series of patents issued throughout the late 1910s and early 1920s. On June 5, 1924 he submitted a patent application for a hydraulic flush valve with many similarities to commercial fixtures in use today.
The company was founded by William Elvis Sloan in Chicago, Illinois in 1906 with the introduction of the Royal flushometer, a valve to release a measured amount of water to flush a urinal or toilet. Initial sales were very poor: only a single Royal model flushometer was sold in 1906, and two in 1907.
A narrow passageway leads from the main water supply into the pressure chamber. It is the narrowness of this passage that meters the flow by slowing repressurizing of the pressure chamber after the action of a flush. The diaphragm technology allows the flush valve to open and let water into the bowl. A main cylinder valve operates up and down.
In public facilities, the trend is toward sensor-operated (automatic) fixtures that improve hygiene and save money. For example, sensor operated automatic-flush urinals have fewer moving parts, reduce wear, and tend to last longer than manual-flush valves. Also, they ensure fixtures are flushed only once per use.
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