| What terminates the sludge discharge cycle of the device shown in the illustration? Illustration MO-0112 |
| A) The solenoid valve opens, directs high-pressure fluid into the closing chamber, and results in an upward movement of the sliding piston. |
| B) The solenoid valve closes, reduces the water pressure to the paring chamber, and allows the spring force to move the sliding piston upward. |
| C) The solenoid valve closes, allows the water in the opening chamber to bleed off through "S", and the sliding piston moves upward due to the force developed in area "J". |
| D) The solenoid valve closes, allows the weight of the sliding piston to oppose the low water pressure, and moves it along the axis of the spindle. |
