Ball valve type 546 PVDF Pro PPA DA

  Datasheet (PDF)

The Georg Fischer SYGEF Standard PVDF ball valve type 546 Pro PPA DA provides high-integrity automated fluid isolation for high-purity media and demanding industrial chemical distribution networks. Manufactured from unpigmented polyvinylidene fluoride (PVDF), the valve body delivers outstanding mechanical strength, broad chemical resistance against aggressive acids and solvents, and a continuous operating temperature profile from -20 degrees Celsius up to 140 degrees Celsius at a nominal rating of PN10. Rotary operation is driven by a pneumatic double-acting (DA) actuator encased in glass-fibre reinforced polypropylene (PP-GF), creating a robust, corrosion-proof all-plastic automation package designed without external metallic exposure to harsh ambient atmospheres. Pneumatic control media is supplied via an integrated NAMUR interface compliant with VDI/VDE 3845, enabling rapid actuation cycling within 1 to 2 seconds under standard control pressure. A built-in manual override permits safe mechanical intervention during commissioning or plant maintenance, while an integrated visual position indicator ensures immediate optical feedback of the ball position. The internal assembly incorporates a low-friction PTFE ball seat and chemical-resistant FKM elastomeric seals, ensuring bidirectional bubble-tight sealing and minimal operating torque throughout extended service life. Pipework connection is achieved via metric butt fusion spigots compatible with conventional butt fusion, IR Plus infrared fusion, and BCF Plus bead and crevice-free jointing techniques. The structural design integrates threaded stainless steel mounting inserts for vibration-resistant support bracket attachment, while maintaining backwards compatibility of z-dimensions, union nuts, and valve ends with first-generation type 546 valves to simplify plant upgrades in deionized water and chemical processing systems.