Neles® three lever valve for Air Separation Units (ASU), series BH

Inherently safe valve to prevent pressure shocks in absorber beds

Metso's Neles® lever valves are designed to air separation unit air inlet shut-off valve. They feature self-locking safety design for a specified differential pressure. The lever arrangement provides valve operation with low friction. The sealing sections are not subjected to abrasion wear, resulting in extremely low torque level.


Prevent pressure shocks in the molecular sieve reactor

Stainless steel design also suitable for wet media

Heating jacket for cold regions


  • High capacity
  • Available with soft and metal sealing
  • Carbon and stainless steel available
  • Inherently safe valve opens only under precise differential pressure
  • Heating jacket construction available


  • Air Separation Units (ASU)
  • Molecular sieve



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