Mod. FI-PI (internal membrane) Mod. FI-P (external membrane)
A foam bladder tank is basically a large container of foam liquid concentrate containing a membrane made of synthetic material, resistant to corrosive agents such as water and foaming agents with which the membrane is in contact. Depending on where the foam concentrate is contained, is possible to differentiate between:
Foam bladder tank serves as a pre-mixing system through a very simple mechanism: the water coming from the water network pressurizes the tank, pushing the foam concentrate contained in it to a mixer of venturi type. Here, the foam concentrate is in contact with the water, forming the foam mixture that will be channeled to the pipe of the distribution network.
A foam bladder tank may have variable dimensions and consequently different capacities of containment of foam concentrate. It’s able to work even with relatively low pressures and ensures minimum pressure losses. Furthermore, the proportioner applied to it can be calibrated according to the delivery system, and the percentage of foam concentrate aspirated remains unchanged compared to the flow.
The proportioner can be a std. model (FI-PM with a range of flow of 1:6) or a Wide range type (FI-WRM, with a huge range of flow).