RVTI LEVEL 2 PROPANE EXAM
Which of the following is NOT a cause of a regulator leaking
propane?
A. Faulty regulator assembly
B. Defective excess flow valve
C. Punctured diaphragm
D. Inverted flare fitting - ANSWERS-B. Defective excess flow valve
The internal level arm assembly in a regulator is controlled by
A. Pressure spring assembly
B. Diaphragm post
C. Pressure adjustment cap
D. Size of the orifice opening - ANSWERS-A. Pressure spring
assembly
Upward manometer fluctuations may indicate that
A. The regulator is receiving liquid propane
B. There may be oily residue in the lines
C. Water may be collecting in the low portion of the lines downstream
of the regulator
D. The vertical cylinder is in the vertical position - ANSWERS-A.
The regulator is recieving liquid propane
, To accurately diagnose regulator equipment failures, the temperature
A. Of the air and pumping must be the same
B. Of the air must be cooler than the piping
C. Of the air must be warmer than the piping
D. Cannot be determined - ANSWERS-A. Of the air and piping must
be the same
Best practice dictates that the only component that can be replaced on
a regulator is
A. The vent screen
B. The diaphragm
C. The drip cap
D. The dust cap - ANSWERS-D. The dust cap
A regulator locking up over 14" w.c. Would
A. Indicate optimum working condition
B. Require adjustment
C. Need to be replaced
D. Require interior component cleaning - ANSWERS-C. Need to be
replaced
As the ambient temperature decreases, the rate of vaporization
A. Increases
B. Decreases
C. Stays the same
Which of the following is NOT a cause of a regulator leaking
propane?
A. Faulty regulator assembly
B. Defective excess flow valve
C. Punctured diaphragm
D. Inverted flare fitting - ANSWERS-B. Defective excess flow valve
The internal level arm assembly in a regulator is controlled by
A. Pressure spring assembly
B. Diaphragm post
C. Pressure adjustment cap
D. Size of the orifice opening - ANSWERS-A. Pressure spring
assembly
Upward manometer fluctuations may indicate that
A. The regulator is receiving liquid propane
B. There may be oily residue in the lines
C. Water may be collecting in the low portion of the lines downstream
of the regulator
D. The vertical cylinder is in the vertical position - ANSWERS-A.
The regulator is recieving liquid propane
, To accurately diagnose regulator equipment failures, the temperature
A. Of the air and pumping must be the same
B. Of the air must be cooler than the piping
C. Of the air must be warmer than the piping
D. Cannot be determined - ANSWERS-A. Of the air and piping must
be the same
Best practice dictates that the only component that can be replaced on
a regulator is
A. The vent screen
B. The diaphragm
C. The drip cap
D. The dust cap - ANSWERS-D. The dust cap
A regulator locking up over 14" w.c. Would
A. Indicate optimum working condition
B. Require adjustment
C. Need to be replaced
D. Require interior component cleaning - ANSWERS-C. Need to be
replaced
As the ambient temperature decreases, the rate of vaporization
A. Increases
B. Decreases
C. Stays the same
