The Series 3800 PCM non-flowing modulating pilot control from Farris Engineering offers a variety of features and benefits. It opens in proportion to the overpressure to minimize fugitive emissions and product loss as well as to reduce noise. The PCM also reduces the shock loads to vessels and piping systems due to valve actuation.

Its set pressure is not affected by constant or variable backpressure. In addition, the PCM Modulating Control can be directly interchanged with our PCF5 snap acting controls in the field for both cost and time savings.