The circuit includes: the constant flow pump PCF, the pressure valve [PV.sub.1], the check valve CV, the proportional
reducing valve PRV, position encoder PT, the pressure switch PS and the filtering system F.
The balancing is accomplished with
reducing valves with three ways.
Spirax Sarco pilot operated
reducing valves have been upgraded with the introduction of a hi-tech, variable rate, pressure control spring, simplifying ordering and cutting spares stockholding costs.
In addition to bolstering Armstrong's control valve offering, Ivanov points out the acquisition of Delta2 will also expand Armstrong's line of direct acting pressure
reducing valves and de-superheating stations.
Product types discussed in the studies are check valves; oleohydraulic and pneumatic transmission valves; pressure
reducing valves; relief and safety valves.