FireFreak08
Mechanical
- Oct 31, 2008
- 20
I have a project that has been completed recently and I'm told there has been water in the mechanical room. Specifics were not given but I'm 99% sure it's from the relief vent on the reduced pressure backflow. The contractor was on site, did some investigating and determined that they need to install a check valve BEFORE the reduced pressure backflow. I'm told that the city water has experienced pressure surges and the contractors reason for the check valve was to absorb these surges. In addition, the dry sprinkler system tripped.
My issue that doesn't make sense to me. If there is a surge, then a sudden drop I could see a backflow condition. However, what would the check valve do? Also, why would this backflow condition trip the dry system? I am trying to confirm that they submitted hydrostatic testing reports and such. Waiting for my PM to confirm.
Any thoughts/solutions/advice?
My issue that doesn't make sense to me. If there is a surge, then a sudden drop I could see a backflow condition. However, what would the check valve do? Also, why would this backflow condition trip the dry system? I am trying to confirm that they submitted hydrostatic testing reports and such. Waiting for my PM to confirm.
Any thoughts/solutions/advice?