Profile: Opperman Mastergear Ltd. provides gearboxes. The M-F series cast or ductile iron valve actuators for high operating torque in manual or motor execution are equipped with a wide range of additional spur gears which process ratio & proportion between input and output torque. Worm gearboxes for modulating regime are produced on the base of MF series gearboxes, and have the same dimensional & torque parameters including base flanges and shaft drilling dimensions. They can be with electric or hydraulic modulating actuators which are directly connected with base gearbox.