Young Tech Company YT-3301 and YT-3302 modular valve positioners

Most positioners would fail quickly when subjected to harsh environments such as extreme temperatures, dirty conditions and high vibration. Young Tech Company (YTC) has developed two smart positioners for these conditions.

The YT-3301 introduced the concept of isolating and detaching the sensing feedback portion of the positioner from the main control housing. The sensing unit accurately detects the position of the valve stem and provides a feedback signal to the main housing.

This dual unit design allows the operator to locate the precision electronics elements at a considerable distance from the valve environment, providing the best of both worlds - precision engagement at the point of valve movement and a clean, dry and ambient temperature for the electronics. This also facilitates mounting multiple control housings in close proximity for convenient and time-saving monitoring and adjustment of valves in the plant.

With the YT-3302 positioner, a third module, housing the driving components of the pilot valve and torque motor assembly, is mounted at an intermediate location between the remote sensing unit and the main control unit. As the sensing unit contains the most robust components and the control the most sensitive, this configuration delivers higher performance with increased positional accuracy.