Akron Brass Eductors [3097] 95 GPM Portable By-Pass Eductor. The Akron By-Pass Eductor utilize a built-in by-pass chamber, allowing the operator to change from water to foam without shutting down and feature a large, easy to read, and removable metering dial with settings between 0% and 6%. The Eductors are rated to flow at 200 psi (14 bar) inlet pressure and work effectively with nozzles rated from 50 to 100 psi (3 to 7 bar).