100+ Free NV Journeyman Plumber Practice Questions

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Under the Uniform Plumbing Code adopted by Nevada, what is the minimum slope required for a 4-inch horizontal drainage pipe?

1/16 inch per foot

1/8 inch per foot

1/4 inch per foot

1/2 inch per foot

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Free Journeyman Plumber Practice Test by State 2026: 4,700+ Questions24 min read

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Key Facts: NV Journeyman Plumber Exam

70%

Passing Score

NV Board of Plumbing Examiners

~100

Questions

PSI exam

$140

Exam Fee

PSI

3 hrs

Time Limit

PSI exam

The Nevada journeyman plumber exam has approximately 100 questions with a 3-hour time limit. A 70% score is required to pass. The exam covers UPC code knowledge and is administered by PSI. The exam fee is $140. Nevada's desert climate introduces unique plumbing considerations including trap seal evaporation and water conservation.

Sample NV Journeyman Plumber Practice Questions

Try these sample questions to test your NV Journeyman Plumber exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under the Uniform Plumbing Code adopted by Nevada, what is the minimum slope required for a 4-inch horizontal drainage pipe?

A.1/16 inch per foot

B.1/8 inch per foot

C.1/4 inch per foot

D.1/2 inch per foot

Explanation: Under the UPC adopted by Nevada, horizontal drainage pipes 4 inches and larger require a minimum slope of 1/8 inch per foot. Pipes 3 inches and smaller require 1/4 inch per foot. Nevada's Board of Plumbing Examiners enforces these UPC standards.

2Nevada's journeyman plumber exam is administered by which testing organization?

A.Prometric

B.PSI

C.Pearson VUE

D.GITS

Explanation: Nevada's journeyman plumber exam is administered by PSI on behalf of the Nevada State Board of Plumbing Examiners. The exam consists of approximately 100 multiple-choice questions with a 3-hour time limit. Candidates must achieve 70% to pass.

3Under the UPC, what is the DFU value for a standard water closet?

A.2 DFU

B.3 DFU

C.4 DFU

D.6 DFU

Explanation: Under the UPC, a standard water closet is rated at 4 DFU. This value is used to calculate drainage pipe sizing for the entire system. Nevada plumbers must use UPC DFU values when designing and installing plumbing systems.

4Under the UPC adopted by Nevada, what is the minimum size for a building sewer when water closets are connected?

A.2 inches

B.3 inches

C.4 inches

D.6 inches

Explanation: Under the UPC, when water closets are connected, the minimum building sewer size is 4 inches. This is because water closets require a minimum 3-inch drain connection, and the building sewer must accommodate the total DFU load. Nevada follows UPC building sewer sizing standards.

5What is the minimum vent pipe size allowed under the UPC?

A.1 inch

B.1-1/4 inches

C.1-1/2 inches

D.2 inches

Explanation: Under the UPC, no vent pipe shall be less than 1-1/4 inches in diameter. This minimum applies to all vent types including individual, branch, and circuit vents. Nevada plumbers must follow UPC vent sizing requirements.

6Under the UPC, what type of backflow prevention device is required for a high-hazard cross-connection?

A.Atmospheric vacuum breaker

B.Dual check valve

C.Reduced pressure zone (RPZ) assembly

D.Hose bibb vacuum breaker

Explanation: The UPC requires a reduced pressure zone (RPZ) backflow prevention assembly for high-hazard cross-connections where backpressure or backsiphonage could contaminate the potable water supply. Nevada plumbers must install RPZ assemblies for health-hazard connections.

7What is the maximum static water pressure allowed in a building distribution system under the UPC?

A.60 psi

B.80 psi

C.100 psi

D.120 psi

Explanation: Under the UPC, the maximum static water pressure in a building distribution system must not exceed 80 psi. When pressure exceeds this limit, a pressure-reducing valve must be installed. In Nevada's desert climate, water pressure variations are common and require monitoring.

8Under the UPC, what is the minimum trap seal depth?

A.1 inch

B.2 inches

C.3 inches

D.4 inches

Explanation: Under the UPC, the minimum trap seal depth is 2 inches and the maximum is 4 inches. The trap seal prevents sewer gases from entering the building. Nevada's arid climate can cause faster trap seal evaporation, making proper seal depth critical.

9Under the UPC, what is the minimum water supply pipe size for a building service?

A.1/2 inch

B.3/4 inch

C.1 inch

D.1-1/4 inches

Explanation: Under the UPC, the minimum building water service pipe size is 3/4 inch. Larger sizes may be required based on fixture count, developed length, and available pressure. Nevada plumbers must perform water supply calculations per UPC requirements.

10Under the UPC, what material is NOT approved for underground drainage piping?

A.Cast iron

B.PVC (DWV)

C.ABS (DWV)

D.Galvanized steel

Explanation: Galvanized steel is not approved for underground drainage installations under the UPC. It corrodes when buried in soil. Cast iron, PVC, and ABS are all approved for underground drainage. Nevada plumbers must use approved materials for all underground installations.

About the NV Journeyman Plumber Exam

Nevada's journeyman plumber exam is administered by PSI on behalf of the State Board of Plumbing Examiners. The exam covers UPC code knowledge including drainage, venting, water supply, gas piping, and fixture installation. Nevada uses the UPC and the exam has approximately 100 questions with a 3-hour time limit.

Questions

100 scored questions

Time Limit

3 hours

Passing Score

70%

Exam Fee

$140 (Nevada Board of Plumbing Examiners (PSI))

NV Journeyman Plumber Exam Content Outline

25%

Drainage, Waste & Vent Systems

UPC drainage pipe sizing, DFU calculations, slope requirements, cleanouts, and trap arm distances

20%

Venting Systems

Vent sizing, wet venting, AAVs, vent termination, circuit venting, and combination waste and vent

20%

Water Supply & Backflow Prevention

Water pipe sizing, WSFU calculations, backflow prevention, pressure regulation, and cross-connection control

15%

Gas Piping & Venting

Gas pipe sizing, BTUH calculations, pressure testing, combustion air, and appliance venting per UPC

20%

Fixtures, Materials & Code Administration

Fixture installation, clearances, materials, joining methods, permits, and inspections

How to Pass the NV Journeyman Plumber Exam

What You Need to Know

Passing score: 70%
Exam length: 100 questions
Time limit: 3 hours
Exam fee: $140

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

NV Journeyman Plumber Study Tips from Top Performers

1Master UPC drainage and vent sizing tables — these are heavily tested on the exam

2Learn DFU values for common fixtures and trap arm distances by pipe size

3Understand backflow prevention device selection for different hazard levels

4Study gas pipe sizing using the longest run method and BTUH calculations

5Review water heater installation requirements including T&P relief valves

6Understand Nevada-specific climate considerations like trap seal evaporation and water conservation

Frequently Asked Questions

What plumbing code does Nevada use?

Nevada uses the Uniform Plumbing Code (UPC) published by IAPMO. The exam tests knowledge of UPC provisions including drainage, venting, water supply, gas piping, and fixture installation requirements.

How many questions are on the Nevada plumber exam?

The Nevada journeyman plumber exam has approximately 100 multiple-choice questions with a 3-hour time limit. A 70% score is required to pass. The exam is administered by PSI.

How much does the Nevada plumber exam cost?

The Nevada journeyman plumber exam fee is approximately $140, paid to PSI when scheduling. Additional license fees apply through the Board of Plumbing Examiners.

Are there special plumbing considerations for Nevada's climate?

Yes. Nevada's arid climate accelerates trap seal evaporation in unused fixtures, making trap primers important. Water conservation is also critical given limited water resources. Higher elevation areas require frost protection for underground piping.