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    HOW/MPR - Hand Operated Worm

    Hand Operated Worm Gearbox


    Designed to suit manual applications, the HOW/MPR worm gear operators are quarter-turn devices intended for the operation of ball, plug and butterfly valves.


    The HOW/MPR gear operators include low lead angle gearing designed to be inherently self-locking.


    Torque range from 39,000 Nm (28,765 lbf.ft) to 264,000 Nm (194,716 lbf.ft). 9 sizes. Ratios from 1229:1 to 7171:1.


    • Carefully chosen ratios to meet manual rim effort requirements
    • Protected steel input shaft
    • Removable output sleeve
    • Ductile iron gearcase
    • Angular contact bearings supporting worm shaft
    • Repositionable baseplate facility


    Options include:


    • High and low temperatures
    • Stainless steel input shaft
    • All types of environment
    • Limit switches
    • Fixed and flexible extensions
    • Chain wheels


    Alltork Actuation works with trusted manufacturers and recognized brands of valve actuators to deliver highest quality products throughout Canada. 

    We aim to create value & make a difference while building strong, long term relationships

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