Role of Control Valves and Drains

Although primarily used to control or isolate portions of a building‘s sprinkler system, control valves and drains play another important role. They allow the building owner or a designated individual to perform testing and maintenance on the system.

In a recent National Fire Protection Association (NFPA) study, in almost two-thirds of cases where a sprinkler failed to operate, someone had shut off the system before the fire. A system shutoff typically occurs when the building owner or designated individual doesn‘t return a valve to its open position once repairs and/or maintenance are complete. Testing the system and verifying the status of control valves help to identify and correct conditions that lead to failure of the sprinkler system.

Yellow tags on sprinkler valves usually indicate something substantially wrong with the sprinkler system
A system riser contains a control valve