| jianwqtu | Date: Tuesday, 19.11.2013, 12:51 | Message # 1 |
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Sergeant
Group: User
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| The two most common backflow prevention assemblies are a double check backflow assembly, usually found below ground or indoors and the pressure vacuum breaker assembly found standing a foot above ground. Some older systems have been designed with atmospheric vacuum breakers on the station lines with no provision for winterizing the system. In my experience these are almost always manual systems. To winterize your system it helps to know something of how your system is designed. Is there a shutoff valve before the backflow assembly, are there drain valves installed or does your system have a fitting to connect a compressors air line. These are all things that will help design the best winterization plan for your individual system. In most cases draining the system will be enough to prevent damage, in others blowing out the system with air will be the best choice. To begin the process turn the water off at the source which will be a manual valve before the backflow prevention assembly, although some installers leave this valve out in favor of the valves built into the backflow itself. At this point you will have your first indication of how your system is designed.
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Related article: Five European Christmas marketsIf you are not planning a trip to Germany this holiday season, four great Christmas markets can be enjoyed in the United States, Japan, France and England. While these markets may be in different countries, they have not lost their charm and authenticity, and are all rooted in ancient tradition.
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