Sprinkler Systems Trip Tests
For dry pipe sprinkler systems, NFPA 25 calls for each dry pipe valve to be tripped annually (at a minimum) during warm weather.
Capitol Fire Protection’s routine NFPA 25 sprinkler system inspection of a dry pipe system includes a trip test of the dry pipe valve with the control valve partially open (called a “partial trip”) which meets the requirement for the first 2 out of 3 years.
Then every third year, NFPA 25 calls for a “full trip” of each dry pipe valve, which entails the control valve being fully open and recording of the time it takes water to reach the inspectors test connection.
We typically conduct full trip tests on a Time & Material basis to allow for the additional time required to drain system low points after the test and set the system back up.