How does the American Standard Champion flush valve differ from a regular one?


Quick Answer

The American Standard Champion flush valve has a diameter of 4 inches, whereas the industry standard is 2 inches. A larger flush valve translates into more force and speed during each flush for potentially more efficient evacuation of the bowl.

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Full Answer

The American Standard Champion flush valve is central to the American Standard Champion 4 flushing system. The flushing system is siphonic, which is most common in the United States. Siphonic action flushing utilizes gravity and entails water from a tank essentially pushing downward the contents of the bowl.

The Champion 4 flushing system combines the larger opening of the 4-inch flushing valve with a piston that delivers a 360-degree flow of water at speeds up to twice as fast as a 3-inch valve. The valve allows about 1.6 gallons of water to fill the bowl, and channels beneath the bowl rim direct water to a jet within the S-shape of the lower bowl so that the Champion 4 flushing system clears the bowl with a single flush.

The subsequent force and speed potentially moves masses that are up to roughly 70 percent larger than the sizes of masses that industry standard valves typically move. At 4 inches, the American Standard Champion flush valve is the largest on the market as of 2016.

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