The MTF Series is our line of continuous-duty, Vertical Vibrators with top flange mount and bottom eccentric weight protection covers. These Vibrators feature easy to adjust eccentric weights to change force settings. This Series complies with IEC and EN Zone 21 and 22 standards for use in potentially explosive atmospheres due to the presence of powders. CSA approved Class 1, Div 2 Groups A, B, C and D upon request. These Vibrators are available: 1Ph or 3Ph Power; in 3600-RPM or 1800-RPM @ 60-Hz / 3000-RPM or 1500-RPM @ 50-Hz; Centrifugal Force Range: 136 to 5,698 lbf.