PVDF Check valve type 562

  Datasheet (PDF)

Georg Fischer SYGEF Standard Type 562 check valves in polyvinylidene fluoride (PVDF) provide dependable non-return flow prevention for demanding industrial chemical distribution, deionized water, and high-purity process systems. Engineered for pipe dimensions d16 to d63 mm (DN10 to DN50) with metric socket fusion spigots, this robust check valve delivers a nominal pressure rating of PN16 and supports a broad service temperature range spanning from -20 degrees to 140 degrees Celsius. The internal mechanism features a hydrodynamically flow-optimized, double-guided return cone powered by a heavy-duty grade 1.4310 stainless steel spring, which prevents chattering and guarantees vibration-free operation even at high medium velocities. High-grade FKM elastomeric seals ensure absolute tightness in the idle closed position without requiring a hydrostatic head, enabling fully flexible installation in both horizontal and vertical piping orientations. Manufactured from unpigmented, high-strength thermoplastic PVDF fluoropolymer, the valve housing offers exceptional chemical resistance against harsh acids, halogens, oxidizers, and industrial solvents, eliminating the risk of media contamination. The true-union body configuration permits fast inline removal and straightforward maintenance, while sharing the exact compact installation length of the industrial Type 546 ball valve range to streamline skid fabrication and retrofit planning. Supplied across European markets by BigWeld, this precision-engineered valve maintains process integrity across pharmaceutical, chemical manufacturing, and semiconductor fluid networks.