According to the illustration, which of the following statements represents the order of events required to occur for the device to close? GS-0155

Correct Answer: Option B — Once "C" has lifted, "A" will reseat with water passing through "H", pressure gradually builds in chamber "I", developing sufficient force to reseat "C".

When the handle is released, the relief valve reseats. Water then flows through the bypass orifice "H" into the upper chamber. As pressure builds in this chamber, it exerts a downward force on the diaphragm, eventually overcoming the lifting force and causing the main valve "C" to reseat securely.