Georg Fischer PVC-U pressure reducing valves (such as Type 582 and V82) are designed to reduce higher inlet pressures to a preset, constant outlet pressure in thermoplastic piping systems. Actuated directly by the line medium, these compact valves protect downstream instrumentation, dosing lines, and sensitive process equipment against overpressure. Manufactured from high-grade unplasticised polyvinyl chloride with chemically resistant EPDM, FKM, or PTFE diaphragm seals, they provide smooth regulation across water treatment, chemical processing, and industrial distribution loops.