Types of Control Valves
Because the sprinkler system connects to a water supply, the system needs some way to control flow when replacing a sprinkler or making alterations to piping. In many instances, occupancy changes require those types of modifications.
There are two categories of control valves:
- indicating valves
- nonindicating valves
Indicating control valve in closed position
A common type of indicating control valve is an outside stem and yoke valve, shown here in an underground valve pit