Input (grade 3): Typical flow is at 0.5 metres per second (1 â "2 feet per second), and can be as fast as 2.5 metres per second (8 feet per second).
Output (grade 3): Typical flow is at 0.5 meters per second (1-2 feet per second), and can be as fast as 2.5 meters per second (8 feet per second).