GMJ 9189 phase 2 to be finished.....AIR GAPSAir Gap Quiz

What is an air gap?

• A mechanical device used to control water flow

• A physical space between a water outlet and the highest possible water level

• A chemical used to prevent contamination

• A type of filter used in water systems

Which type of air gap is suitable for high-risk fluid category 5 situations?

• Type AA

• Type AB

• Type AD

• Type AG

What distinguishes the AB air gap?

• It uses a mechanical valve for backflow prevention

• It is specifically used in fluid categories 1 and 2

• It ensures non-mechanical prevention for high-risk fluids

• It relies on a siphon break to prevent contamination

What is the purpose of the AD air gap (jump jet)?

• To mechanically seal the water system

• To prevent siphonage using an injector design

• To create a spillover directly into the atmosphere

• To control fluid flow using mechanical pumps

How does back siphonage occur?

• When water pressure in the main supply is higher than the outlet

• Due to a vacuum or pressure drop in the water system

• Through mechanical failure in a pump

• When an air gap is too small

Which air gap type is suitable for all fluid categories?

• Type AG

• Type AB

• Type AA

• Type AD

What feature characterizes the AG air gap?

• It is sealed to prevent leakage

• It uses an injector for pressure control

• It is open to the atmosphere within a cistern

• It requires mechanical adjustment to function

What is the main advantage of non-mechanical backflow prevention methods like air gaps?

• They are inexpensive to install

• They are highly resistant to mechanical failure

• They enhance water pressure for better performance

• They require frequent maintenance

Which of the following is NOT a method of backflow prevention?

• Air gap

• Non-return valve

• Mechanical sealant

• Reduced pressure zone device

What is the primary role of backflow prevention methods in water systems?

• To reduce water pressure in pipes

• To ensure no contaminants enter the potable water supply

• To enhance the flow rate of water systems

• To separate water systems physically from electrical lines