The S series features a 5:6 screw profile of the rotors (five main rotor teeth and six secondary rotor teeth) that makes for low differential pressure between the chambers and so a minimum loss of volume flow. The small radius of the secondary rotor teeth means that the blow hole is as small as possible, thus ensuring high air end efficiency. The optimized speed is significantly lower than in previous air ends. The resulting reduction in splashing losses enhances efficiency and extends the life of the air end. Thanks to the wind tunnel-designed fan unit and the reduced air end speed, the BOGE S-3 series is quieter than ever. A noise reduction of up to 12 decibels is achieved.
BOGE America, Inc.; Powder Springs, GA 30127. www.boge.com/us or call 770 874-1570