EC8000 Series electronic-controlled pressure regulators have been added to the line of APCO valves and controls from US Para Plate Corp., Sacramento, Calif. The valves handle line pressures up to 6,000 psi with outlet pressures reaching 500 psi. They have a 316 stainless-steel construction and seal materials depend on fluid compatibility. The analog-control signal is 4 to 20 mA or 0 to 5 V. The NEMA-4 enclosure features a 0.5-in. NPT conduit connection. They regulate downstream set pressures in gas and liquid applications, as well as control pressures to high-flow, pilot-type valves.