Anti Freeze Flashcards
1
Q
anti-freeze solutions
propylene glycol ___%
glycerin ___%
A
propylene glycol 38%
glycerin 48%
2
Q
Backflow
A
Some AHJ’S require RP reduced pressure backflow device
3
Q
AWWA
A
backflow must be installed, maintained, and tested by AWWA
4
Q
CPVC antifreeze systems
A
only use glycerin solutions
5
Q
antifreeze loops
A
standard loop
alternate loop
6
Q
antifreeze solution testing
A
initially inserted into the system
annually
test with hydrometer or refractometer(most common)
Just drain completely if the solution is not adequate when testing
