Red Seal Plumbing Practice Exam 2025 - Free Red Seal Plumbing Practice Questions and Study Guide

Question: 1 / 400

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

turn regulating screw clockwise

Flushing a flushometer works by adjusting the opening and closing speed of the diaphragm using the regulating screw. By turning the regulating screw clockwise, the diaphragm's opening and closing speed is slowed down, resulting in a longer and more effective flush. Option B, turning the regulating screw counter clockwise, would actually speed up the diaphragm's movement and result in a shorter and less effective flush. Options C and D, increasing or decreasing water pressure, are not effective ways to adjust the length of a flush on a flushometer. Water pressure primarily affects the force of the flush, not the duration.

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turn regulating screw counter clockwise

increase water pressure

decrease water pressure

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