Ball valve type 546 Pro PPA FC

  Datasheet (PDF)

The Georg Fischer SYGEF Standard PVDF ball valve type 546 Pro PPA FC provides automated, fail-safe flow control for demanding chemical distribution systems, ultrapure water loops, and high-purity industrial piping networks. Manufactured from unpigmented polyvinylidene fluoride (PVDF), this pneumatically actuated ball valve features a fail-safe-to-close (FC) configuration that automatically returns to a closed position via mechanical spring return upon air supply loss. The valve body integrates a low-friction PTFE ball seat and high-performance FKM elastomeric seals, ensuring chemical inertness against harsh acids, solvents, and oxidizing media across an operating temperature range from -20 degrees to 140 degrees Celsius at an operating pressure rating of PN10. Actuation is driven by an all-plastic pneumatic actuator engineered with a glass-fiber reinforced polypropylene (PP-GF) housing, protecting internal mechanics from corrosive atmospheric environments. Control air is supplied via an integrated NAMUR interface complying with VDI/VDE 3845, allowing direct, compact solenoid pilot valve attachment. For maintenance and system safety, the unit includes an integrated manual override to facilitate physical operation during setup or air interruptions, alongside a high-visibility optical position indicator. Secure pipe assembly is achieved via metric PVDF ISO fusion sockets, while threaded stainless steel inserts in the base enable rigid structural mounting. The modular design maintains backwards compatibility with first-generation type 546 and type 230 to 235 components across identical z-dimensions, union ends, and union nuts, ensuring seamless drop-in replacement and process automation upgrades.