Written Review Exam #5

1) When servicing Back Flow Devices in a potable water system, only _______ lubricants shall be used to assist with re-assembly.

• Lithium grease

• Non toxic

• Petroleum oil

• Areosol

2) A Flushometer must be provided with a vacuum breaker.

• True

• False

3) A double check valve can be used to protect an untreated boiler feed line from backpressure.

• True

• False

4) A pressure vacuum breaker is an effective device for backpressure protection.

• True

• False

5) Reclaimed Water is Non-potable water that meets or as a result of treatment, meets federal requirements for its intended uses. The level of treatment and quality of the reclaimed water shall be approved by the Authority Having Jurisdiction.

• True

• False

6) Vertical wet venting is limited to ____ unit fixtures.

• One

• Two

• One and Two

• One, two, and three

7) The wet vented section in no case be less than ___ pipe.

• 1 1/2"

• 2"

• 2 1/2"

• 3"

8) The wet vented section must be increased by ___ pipe size(s).

• 0

• 1

• 2

• None of the above

9) Horizontal drainage piping requires a clean out for each aggregate change in direction of

• 60 degrees

• 72 degrees

• 90 degrees

• 135 degrees

10) What is the perimeter of a room 15’ — 6” x 15’ — 6”?

(a)