Plumbing YouTube video

What is the purpose of backflow valves?

• To increase water pressure

• To allow water to flow backwards

• To prevent water from entering the house

• To heat the water

How often should a typical tank be cleaned?

• Every year

• Every two years

• Every three years

• Every five years

What is the minimum diameter of a septic tank cap?

• 6 inches

• 8 inches

• 10 inches

• 12 inches

Where should the flame of a water heater in a garage be positioned?

• 12 inches off the ground

• 18 inches off the ground

• 24 inches off the ground

• 30 inches off the ground

What is the correct strapping for water heater seismic strapping?

• 1/4 high and low

• 1/3 high and low

• 1/2 high and low

• 3/4 high and low

What happens in a series installation of water heaters?

• Both heaters share the workload equally.

• The first heater does all the work and fails first.

• The second heater does all the work and fails first.

• Both heaters must be the same model.

What is the purpose of an isolation valve in a water heater system?

• To increase water pressure.

• To control the temperature.

• To be installed on the cold water side.

• To prevent water leakage.

What is the function of a drain valve in a water heater?

• To increase water temperature.

• To flash the unit and remove sediment.

• To control water flow.

• To prevent overheating.

At what pressure does superheated water create 150 psi?

• 100 degrees

• 200 degrees

• 300 degrees

• 400 degrees

What is the role of an anode rod in a water heater?

• To heat the water.

• To pull corrosive elements away from the tank.

• To increase water pressure.

• To control the temperature.