Red Seal Plumbing Practice Exam

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How would you decrease the length of flush on a flushometer?

turn regulating screw counter clockwise
turn regulating screw clockwise
reduce water flow
increase water flow

The correct answer is: turn regulating screw counter clockwise

Regulating screw should be turned counter clockwise to decrease the length of flush, as it will decrease the amount of water flowing through the flushometer. B is incorrect because turning the screw clockwise will increase water flow and therefore increase the length of the flush. C and D are incorrect because they do not involve adjusting the regulating screw and will not have an effect on the length of the flush.