Diaphragm valve type DIASTAR 025 FO PVDF

  Datasheet (PDF)

The Georg Fischer SYGEF Standard DIASTAR 025 FO pneumatic diaphragm valve is an engineered fluid control solution designed for the safe management of aggressive chemicals, high-purity media, and pharmaceutical-grade water systems. Operating on a pneumatic fail-safe to open (FO) mechanism, the actuator uses an internal spring configuration to ensure that the flow path remains fully open upon pilot signal failure, transitioning to a closed state when compressed air is supplied via its G 1/4 inch control connection. Suitable for cleanroom-grade purified water (PW), deionized water networks, and automated chemical distribution lines subjected to steam or chemical sanitization, this valve delivers long-term process reliability and corrosion resistance in aggressive industrial environments.