Unit 5. Backflow Prevention - Test Your
Knowledge
Define and in short provide an explanation for "backflow." - ANSThe motion of a liquid in
reverse of the ordinary course of drift in a piping machine. Backflow can also occur in the
injection line, inflicting the pesticide tank to overflow. Backflow results from either
backsiphonage or backpressure.
Why is backflow prevention so crucial? - ANSTo shield water resources from pollutants.
Backflow prevention is a critical part of secure and powerful chemigation.
Define "backsiphonage" and call some commonplace reasons. - ANSA vacuum as a result
of decreased pressure in a supply line to a piping gadget. This vacuum causes a siphoning
movement. Common causes are:
1. High liquid speed in pipelines.
2. A line break or restore this is lower than a service factor.
Three. Lowered main pressure due to a excessive charge of water withdrawal (ex. Fireplace
preventing).
Four. Reduced deliver stress at the suction facet of the booster pump.
Define "backpressure" and name some not unusual causes. - ANSA difference in stress
while a deliver line is attached to a excessive-strain device. If the device exceeds the
running strain of the supply pipes, backpressure can end result. Common causes are:
1. Booster pumps.
2. Connections to boilers.
Three. Cross connections with any other device running at a better pressure.
Four. Elevated piping.
Knowledge
Define and in short provide an explanation for "backflow." - ANSThe motion of a liquid in
reverse of the ordinary course of drift in a piping machine. Backflow can also occur in the
injection line, inflicting the pesticide tank to overflow. Backflow results from either
backsiphonage or backpressure.
Why is backflow prevention so crucial? - ANSTo shield water resources from pollutants.
Backflow prevention is a critical part of secure and powerful chemigation.
Define "backsiphonage" and call some commonplace reasons. - ANSA vacuum as a result
of decreased pressure in a supply line to a piping gadget. This vacuum causes a siphoning
movement. Common causes are:
1. High liquid speed in pipelines.
2. A line break or restore this is lower than a service factor.
Three. Lowered main pressure due to a excessive charge of water withdrawal (ex. Fireplace
preventing).
Four. Reduced deliver stress at the suction facet of the booster pump.
Define "backpressure" and name some not unusual causes. - ANSA difference in stress
while a deliver line is attached to a excessive-strain device. If the device exceeds the
running strain of the supply pipes, backpressure can end result. Common causes are:
1. Booster pumps.
2. Connections to boilers.
Three. Cross connections with any other device running at a better pressure.
Four. Elevated piping.
