FREE Backflow Assembly Tester Prevention Methods Questions and Answers
Which backflow prevention device is designed for use on systems with low or moderate hazard risk?
A Double Check Valve Assembly (DCVA) is used for low to moderate hazard applications and prevents backflow through two independently operating check valves.
How often should backflow prevention assemblies be tested according to most local regulations?
Backflow prevention assemblies should be tested annually to ensure they are functioning properly and protecting the potable water system.
Which type of backflow prevention device is commonly used in high-risk applications?
A Reduced Pressure Zone (RPZ) assembly provides the highest level of backflow protection by using two check valves and a relief valve.
What is the primary purpose of a backflow prevention assembly?
A backflow prevention assembly prevents contaminated water from flowing back into the potable water supply, ensuring public health and safety.
What is the minimum required height for an air gap in a backflow prevention system?
The minimum air gap should be at least twice the diameter of the supply pipe but not less than one inch to prevent contamination.
Which backflow condition occurs when the pressure in a potable water system drops below atmospheric pressure?
Backsiphonage occurs when negative pressure in the water supply causes contaminants to be drawn into the system.