(A) Product description ??? foam mixture passes through the nozzle forming atomized jet diffusion negative pressure around it, inhale a lot of air to form air bubbles enter the tank through the foam nozzle, in the role of spoiler steady trickles along the tank wall, covering the burning liquid, use foam to achieve the effect of cooling and suffocation extinguishing purposes. (B) the relationship between the flow and pressure by using the following formula: indeed produce generator inlet pressure range of 0.3-0.6 MPa, at different inlet pressure mixture flow is different, so according to the following formula to calculate the specific use of the inlet pressure mixture flow rates: namely Q = K ?????????????? Where: Q: mixture flow (L / min) K: Coefficients P: inlet pressure (MPa)