Zero Backlash for modulating quarter turn valve

DESCRIPTION

The majority of pneumatic/hydraulic actuators uses scotch yoke technology to transform the linear piston movement into a rotary one.
Gaps between the sliding block and the scotch yoke slot inevitably have a negative influence on both precision and functional dynamic (i.e. hysteresis, dead band, small step response, etc.). Going on towards the operative life of the actuator, this inaccuracy becomes inevitable and increases consistently.

Zero Backlash (ZB) mechanism solves the native and the wearing-related gap between the sliding block and the scotch yoke slot, maintaining friction values at comparable levels to the state-of-the-art technology.

PLUS

    • Patented technology
    • Allows automatic and continuous adaptations during actuator’s operation
    • Avoid the increase of dynamic and static friction
    • Available on the whole range of scotch yoke mechanism
    • Avoid any possible unwanted mobility between different parts
    • It is upgradable on IMI STI quarter turn portfolio
    • Position reliability of the ZB system is 400% times better than standard mechanism

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HIGHLIGHTS

IMI STI valves, actuators, positioners, , Zero Backlash for modulating quarter turn valve

Picture shows Zero Backlash mechanism, no gap present between the sliding block and the scotch yoke slot.