AB valve

AB valve (α β valve)  is a type of split butterfly valve, consisting of an active valve and a passive valve. It forms a closed channel through precise docking, and can be separated and kept sealed after material transfer to prevent leakage and pollution. The core is metal to metal nano level sealing technology.Widely used in industries such as pharmaceuticals, biotechnology, chemical engineering, and food, it is suitable for scenarios such as isolator loading and unloading, reactor feeding, IBC bucket transportation, sterile ingredient and sampling. It is used for the closed transportation of highly active/toxic/sterile powders, meeting OEB5 level protection and GMP/FDA standards, protecting personnel safety and preventing cross contamination.

Common Types

  • Manual AB valve: easy to operate, low cost, suitable for small and medium batch, low-frequency sealed transportation conditions
  • Automatic AB valve: pneumatic/electric drive, compatible with automated production lines, supports remote timing control
  • Aseptic AB valve: equipped with SIP online sterilization and CIP cleaning functions, with mirror polished inner walls, suitable for aseptic production
  • Highly sealed AB valve: OEB5 grade seal with OEL<1 μ g/m ³, suitable for transporting highly active/toxic materials

Structural Advantages & Corresponding Benefits

  1. Dual valve split metal nano sealing structure

  • Special point: The active and passive valves adopt metal to metal nano level sealing surfaces, equipped with FDA grade fluororubber auxiliary sealing, and have a ± 14mm docking offset compensation design.
  • Result:The dust leakage limit OEL is less than 1 μ g/m ³, achieving OEB5 level protection, allowing installation deviation, adapting to frequent powder transfer docking, ensuring personnel safety and material purity.

  1. Sterilizable blind spot free flow channel and modular design

  • Special point: 316L stainless steel integrated valve body, inner wall electrically polished to Ra<0.4 μ m, supports CIP/SIP, modular material contact parts for quick replacement.
  • Result: No residual dead corners, meeting the requirements of aseptic production and online sterilization, improving maintenance efficiency, and adapting to flexible docking and compliance verification of multi specification equipment.