The SMB-5 was designed to meet the heavy-duty requirements of very large, high-pressure valves. The units are constructed with ductile iron gear housings to withstand the shocks attendant to operation of large valves as they may be slammed suddenly to open or close under the most severe conditions. The housings are also designed to accommodate an optional built-in handwheel spur gear reduction to reduce manual operating effort, should it be desired. 

Motor: 575 VAC, 3480 RPM, 200 ft lb start torque, 40 ft lb run torque, Duty Cycle 15 minutes, 3 phase, frame 326U, 26.6 hp. 

This unit is from a Class 2500, 24 inch Weir Gate Valve by Weir Valve and Controls with a HOPKINSONS 2500 class bypass valve, model number M862420 

Removed from an 18" Valve

Motor: 230/460 VAC, 1720 RPM, 60 ft lb start torque, 12 ft lb run torque, Duty Cycle 15 minutes, 3 phase, frame C184Y,1.0 S.F.

CLASS H Insulated Motor for the highest rated class offered for maximum heat resistance. Motor is "Mode M" which signify that it is the high torque, intermittent duty motor required for the hammer blow mechanism of the gear train. 

Duty Cycle of 15 minutes with a 95C rise