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Large leak from backflow preventer on gas water heating system
I have a gas fired baseboard hot water 2 zone system. Moved into this home a year ago had no issues during the heating season. Today I was installing floors in one of the bedrooms and may have nudged the baseboard pipes once or twice, but nothing hard, just tap here and there -- same as kids would do playing around ... At the same time I did have water turned off at the main since I have a well water filtration system in that bedroom closet and did not want to have issues with water as i moved some of the items around during the floor work. When I finished the floors, i turned the water back on and in my utility closet I heard water hitting the floor -- I peaked in and water was pouring out of the backflow preventer valve, which is located at the feed to the boiler. There is a water feed off valve ahead of the backflow preventer, which i turned off and it made the leak stop. The system is appx 30 years old and I am not sure whether anything has or has not been replaced during that time. What could have caused the sudden leak and what options do I have to stop it?
many thanks for your help!