RANDOM BACKFLOW EXAM
QUESTIONS AND ANSWERS
double check cold water good up to - Correct Answers -140
double check operates at - Correct Answers -150 psi
double check hot water good up to - Correct Answers -180
atmospheric pressure - Correct Answers -14.7 psi
double check - Correct Answers -low hazrd only
to obtain a optional line pressure reading a suitable pressure gauge is attached to test
cock - Correct Answers -1 or 2
double check work at - Correct Answers -150 psi
cold water double check max temp - Correct Answers -140
isolation protection within a facility is usually regulated by - Correct Answers -plumbing
code
pressure loss per foot of elevation rise is - Correct Answers -0
a thrust block is designed to - Correct Answers -maintain pipe joint integrity
code requirea water system pressure does not excced - Correct Answers -80psi
plumbing code defines hot water as - Correct Answers -110f
a permit required confined space includes the following except - Correct Answers -
oxygen level maintained at 21%
temperature and pressure relief valves are not designed for - Correct Answers -
intermitten operation
an indirect over rim cross connection has the water supply terminating - Correct
Answers -below the flood level rim
a water heater pressure of 150 psi and a service pressure of 80 psi will likely result in -
Correct Answers -backpressure backflow
QUESTIONS AND ANSWERS
double check cold water good up to - Correct Answers -140
double check operates at - Correct Answers -150 psi
double check hot water good up to - Correct Answers -180
atmospheric pressure - Correct Answers -14.7 psi
double check - Correct Answers -low hazrd only
to obtain a optional line pressure reading a suitable pressure gauge is attached to test
cock - Correct Answers -1 or 2
double check work at - Correct Answers -150 psi
cold water double check max temp - Correct Answers -140
isolation protection within a facility is usually regulated by - Correct Answers -plumbing
code
pressure loss per foot of elevation rise is - Correct Answers -0
a thrust block is designed to - Correct Answers -maintain pipe joint integrity
code requirea water system pressure does not excced - Correct Answers -80psi
plumbing code defines hot water as - Correct Answers -110f
a permit required confined space includes the following except - Correct Answers -
oxygen level maintained at 21%
temperature and pressure relief valves are not designed for - Correct Answers -
intermitten operation
an indirect over rim cross connection has the water supply terminating - Correct
Answers -below the flood level rim
a water heater pressure of 150 psi and a service pressure of 80 psi will likely result in -
Correct Answers -backpressure backflow
