Viking® F20214N Model VRC Foam Ratio Controller, 3% XMAX, 6" D-8 11 mm glass bulb-type spray

11 mm glass bulb-type spray sprinklers designed for use in light

77-573-4-155

286 Degree 23875MG/B Fire Sprinkler Head

24-volt system

Pipe Size:  8 inches​

Viking® F20214N Model VRC Foam Ratio Controller, 3% XMAX, 6" D-8 11 mm glass bulb-type sprayThe 6 inch ratio controller accurately proportions foam concentrate into a water stream over a wide range of water flow rates. Ratio controllers are an integral part of an approved foam system. In addition to the ratio controller, the main components of the approved foam system are specific foam concentrates, a foam storage tank, a concentrate control valve and foam discharge devices. The system must be designed so that the ratio controller can