Improperly insulating a backflow preventer can be a dangerous and costly mistake!It’s dangerous because when a backflow becomes damaged due to freeze, there’s a good chance it’s not going to function properly which can put the water supply it was installed to protect at risk of contamination.It’s costly because backflow devices are expensive and labor intensive to replace. In a nutshell, you want to avoid these problems if at all possible.
So here’s some quick pointers on how to properly select a backflow insulation bag:
1) Carefully measure the device at the base and up at the top. Be sure to measure both the length and the width of the components.
2) Decide what level of protection you are going to need: Frost Protection Or Freeze Protection. (click that link for more info). If you’re not sure talk to folks in your area and find out what the norm is.
3) Decide if you want to go with just an exposed insulation bag, or if a hard shell type of enclosure may be more beneficial. Many enclosure designs are lockable and work well to deter theft and tampering. More info.
3) Select a backflow insulation pouch that is large enough to cover your application. This can be a pain for some folks. One alternative is to visit the page on this site and enter the dimensions of the device you need covered and they will email you some insulation bag and enclosure options that will work well for you (it’s Fast and Free)!