Viking® F20214N Model VRC Foam Ratio Controller, 3% XMAX, 6" D-8 200 Degree 20757JNE Fire Sprinkler

200 Degree 20757JNE Fire Sprinkler Head

286 Degree 23875MG/B Fire Sprinkler Head

77-573-4-155

Escutcheon for use with RASCO (Reliable Automatic Sprinkler Company) fire sprinkler model numbers: Model G GR

Viking® F20214N Model VRC Foam Ratio Controller, 3% XMAX, 6" D-8 200 Degree 20757JNE Fire SprinklerThe 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