The West P8170 Valve Controller is a 1/8 DIN temperature controller with continuous online open loop control of valve motor drives or electric actuators. This feature allows for accurate control without the need for slidewire feedback. This lowers the cost of the motor and wiring, without sacrificing control.

The West P8170 temperature controller incorporates our advanced tuning algorithms, with selectable pre-tune and self-tuning for easier setup. The self-tune also reduces output activity to an absolute minimum without compromising control quality, thereby reducing wear and tear on mechanical components such as valves, contactors and relays. In test, these controls have cut down valve oscillation from 30 to 40 times a minute to just a few. Pre-tune plus self-tuning has also been shown to get on control up to 3 times faster.