Page 1 of 114
RVTI Level 1 EXAM - Certification EXAM 2026-2027
COMPLETE QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
1. An RV technician is checking a two-stage propane regulator system. If the first stage reduces
cylinder pressure for safe use, what pressure does it typically output?
A. 5 psi
B. 10 psi
C. 15 psi
D. 20 psi
Answer: B. 10 psi
Rationale: The first-stage regulator reduces high cylinder pressure to approximately 10 psi,
preparing it for the second-stage regulator which brings it to appliance operating levels.
2. During a PDI, the second stage propane regulator must maintain the system pressure to
appliances. What is the typical operating pressure for appliances in water column (Wc)?
A. 8 Wc
B. 11 Wc
C. 14 Wc
D. 16 Wc
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Answer: B. 11 Wc
Rationale: Appliance regulators are designed to maintain an operating pressure of 11 Wc to
ensure consistent appliance function.
3. Propane cylinders should never be filled beyond a certain percentage to prevent pressure
hazards. What is this maximum fill level?
A. 70%
B. 75%
C. 80%
D. 85%
Answer: C. 80%
Rationale: Filling propane cylinders beyond 80% does not allow room for expansion and
vaporization, which could lead to overpressure and safety hazards.
4. In cold weather, what is the recommended minimum propane level in a cylinder to ensure
adequate vapor pressure for appliances?
A. 25%
B. 50%
C. 60%
D. 75%
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Answer: B. 50%
Rationale: Maintaining at least 50% propane in cold weather ensures proper vaporization and
continuous appliance operation.
5. Which test is performed to determine if a propane regulator locks up properly when no gas is
flowing?
A. Operating pressure test
B. Lock-up pressure test
C. Timed pressure drop test
D. Bubble solution test
Answer: B. Lock-up pressure test
Rationale: The lock-up pressure test verifies the regulator’s maximum pressure when no
propane is flowing to ensure safe operation.
6. When checking for leaks in a propane system, which method is standard?
A. Timed pressure drop test
B. Manometer calibration
C. Bubble solution test
D. Lock-up pressure test
, Page 4 of 114
Answer: C. Bubble solution test
Rationale: Bubble solution creates visible bubbles where propane leaks are present, allowing
safe and accurate detection.
7. An RV water system relies on both a source of water and a pressurization method. Which of
the following is NOT a standard method of pressurization?
A. Demand pump
B. City water pressure
C. Air-pressurized system
D. Water heater circulation
Answer: D. Water heater circulation
Rationale: Water heater circulation is not used to pressurize the system; pressurization comes
from pumps, city water, or air systems.
8. What is the purpose of a bypass valve in an RV water heater during winterization?
A. Circulate hot water
B. Prevent antifreeze from entering the water heater
C. Increase water pressure
D. Drain the water tank
RVTI Level 1 EXAM - Certification EXAM 2026-2027
COMPLETE QUESTIONS AND VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR
1. An RV technician is checking a two-stage propane regulator system. If the first stage reduces
cylinder pressure for safe use, what pressure does it typically output?
A. 5 psi
B. 10 psi
C. 15 psi
D. 20 psi
Answer: B. 10 psi
Rationale: The first-stage regulator reduces high cylinder pressure to approximately 10 psi,
preparing it for the second-stage regulator which brings it to appliance operating levels.
2. During a PDI, the second stage propane regulator must maintain the system pressure to
appliances. What is the typical operating pressure for appliances in water column (Wc)?
A. 8 Wc
B. 11 Wc
C. 14 Wc
D. 16 Wc
,Page 2 of 114
Answer: B. 11 Wc
Rationale: Appliance regulators are designed to maintain an operating pressure of 11 Wc to
ensure consistent appliance function.
3. Propane cylinders should never be filled beyond a certain percentage to prevent pressure
hazards. What is this maximum fill level?
A. 70%
B. 75%
C. 80%
D. 85%
Answer: C. 80%
Rationale: Filling propane cylinders beyond 80% does not allow room for expansion and
vaporization, which could lead to overpressure and safety hazards.
4. In cold weather, what is the recommended minimum propane level in a cylinder to ensure
adequate vapor pressure for appliances?
A. 25%
B. 50%
C. 60%
D. 75%
,Page 3 of 114
Answer: B. 50%
Rationale: Maintaining at least 50% propane in cold weather ensures proper vaporization and
continuous appliance operation.
5. Which test is performed to determine if a propane regulator locks up properly when no gas is
flowing?
A. Operating pressure test
B. Lock-up pressure test
C. Timed pressure drop test
D. Bubble solution test
Answer: B. Lock-up pressure test
Rationale: The lock-up pressure test verifies the regulator’s maximum pressure when no
propane is flowing to ensure safe operation.
6. When checking for leaks in a propane system, which method is standard?
A. Timed pressure drop test
B. Manometer calibration
C. Bubble solution test
D. Lock-up pressure test
, Page 4 of 114
Answer: C. Bubble solution test
Rationale: Bubble solution creates visible bubbles where propane leaks are present, allowing
safe and accurate detection.
7. An RV water system relies on both a source of water and a pressurization method. Which of
the following is NOT a standard method of pressurization?
A. Demand pump
B. City water pressure
C. Air-pressurized system
D. Water heater circulation
Answer: D. Water heater circulation
Rationale: Water heater circulation is not used to pressurize the system; pressurization comes
from pumps, city water, or air systems.
8. What is the purpose of a bypass valve in an RV water heater during winterization?
A. Circulate hot water
B. Prevent antifreeze from entering the water heater
C. Increase water pressure
D. Drain the water tank
