In order to achieve manual operation of ball valve, high performance butterfly valves and plug valves, quarter turn worm gear operators utilizing iron or steel components are being supplied by Forcas. The gear operators are standardly available in weather-proof cast iron for range of 200 Nm to 350000 Nm. Ductile iron/marine application models are also available. Quarter turn worm gear operators for electrical actuation can also be supplied. The Gear operators are capable of withstanding an overload of twice the maximum rated output torque. Randomly one gear operator per lot is tested for performance on an in-house electronics test rig.
worm hub, 4 key way for choice of mounting or any other custom requirements can easily be incorporated in standard models or custom built models. Limit Switch box mounting, locking arrangement, chain wheel arrangement, extension shaft with floor stand are some accessories that we can provide. The gear operators are supplied with hand wheels in either cast iron or fabricated steel from 150 mm through 1200 mm diameters. You furnish your effort requirement and Forcas will provide you a gear operator.
Forcas also supplies quarter turn manual override to be used with pneumatic actuators for manual operation of the valve. Recently we have added 15 models of multi turn bevel Gear Operators for manual operation and electrical actuation.