Description

The wide range proportioner accurately proportions foam concentrate into a water stream over a wide range of system flow rates. The device is configured to proportion foam concentrate at a 3% ratio. Wide range proportioners are an integral part of an approved foam system. In addition to the wide range proportioner, the main components of the approved foam system are: foam concentrate, a foam storage tank, a concentrate control valve, and foam discharge devices.

The system must be designed so that the wide range proportioner can accurately proportion foam over the range of flow rates expected during the system operation.

The wide range proportioner has the capability to accurately proportion foam concentrate into the water supply at low flow rates as required when only a small quantity of sprinklers have activated.