307. When water pressure of 100 psi is used in conjunction with an inline proportioner for the production of the mechanical foam, how long will a 5-gallon can of liquid foam last?

At 100 psi, a standard inline proportioner using a 6% mechanical foam concentrate will consume a 5-gallon can in approximately 1.5 minutes, based on a typical flow rate of 60 gallons per minute for the finished foam solution.