FOOD TECHNOLOGY

FOOD QUALITY AND SAFETY

FOOD SAFETY MANAGEMENT SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the only completely reliable method for preventing backflow?
A
Air Gap
B
Ball Valve
C
Cross-Contamination
D
Vacuum Breaker
Explanation: 

Detailed explanation-1: -The air space between the floor drain and the drainpipe of a sink is an example. An air gap is the only completely reliable method for preventing backflow.

Detailed explanation-2: -Unlike other backflow prevention assemblies, an air gap is a totaly non-mechanical means of backflow prevention. An Air Gap is considered the maximum protection available against back pressure backflow or back-siphonage, but unfortunately is not always practical and can easily be bypassed.

Detailed explanation-3: -How Is Backflow Prevented? A simple means of preventing backflow is by implementing an air gap between the supply side and receiving side of a water line. The air gap breaks the vacuum that forms when a backflow situation occurs and keeps water from moving backward.

Detailed explanation-4: -Method #1: Add an Air Gap to Prevent a Backflow An air gap is a fundamental, non-mechanical way to maintain the pressure in your plumbing pipes. It’s simply a space between the water supply outlet and the flood level of a fixture. And, this separation keeps a positive force in the line.

There is 1 question to complete.