Abstract: A mobile modular fire suppression apparatus (10) includes a platform (12) which may take the form of a skid. The platform (12) has mounted thereon a foam concentrate pump (34), an output of which is connected to a foam concentrate inlet of an in-line balanced pressure proportioning module (200). A water inlet (42) of the proportioning module (200) is connected to a pressurized water intake manifold (20) that is preferably disposed on a rear side of the skid (12). Foam concentrate intake lines (60), return lines (100), and foam solution discharge conduits (120) have ports on the left and right sides of the skid. By use of remote foam concentrate supply vessels (16) and a plurality of standard municipal water pumper trucks (14), the invention permits the creation and distribution of a large volume of fire fighting foam at a low capital cost.

Abstract: A mobile modular foam fire suppression apparatus includes a movable platform. Supplies of foam concentrate and water are remote from the platform. A foam concentrate pump mounted on the platform pumps foam concentrate from a remote supply, such as a foam concentrate tank or tailer, to a water/foam proportioner on the platform. Water is provided under pressure from sources such as pumper trucks to a water inlet of the water/foam proportioner. The proportioner mixes the water and the foam concentrate to form a foam solution, which may then be applied to a fire with any of several foam solution discharge devices. Preferably, the apparatus also includes a foam concentrate return line which returns excess foam concentrate back to the remote supply of foam concentrate. This return line has a pressure regulator which regulates the pressure in a portion of the foam concentrate return line to a predetermined value.