Removing fire sprinkler system - Offenbacher-Hof
Jun 17, 2017 · Exposed valves can also freeze – causing the system to ... Instead of water, the sprinkler piping is filled with air or nitrogen. ... There are generally two types of sprinkler system valves: hand operated manual valves and ... on the wires leading to the bad solenoid, then untwist the wires to separate them.
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