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Sudmo Double Block and Bleed Butterfly Valve

Sudmo Double Block and Bleed Butterfly Valve


Pentair hygienic Double Block and Bleed Butterfly Valves consists of two sets of standard F250 butterfly valve components arranged in series, within a single integral valve body, to provide an inline separation cavity when both valves are in the closed position. This inline separation of products is used to isolate non-compatible fluids (i.e. CIP/product.) The separation cavity has two pneumatically interlocked poppet valves, tangentially opposed to providing the introduction and draining of CIP or flushing liquids. Their position provides for a turbulent circular washing action plus facilitates a drain to atmosphere should either of the separate valve seats fail. The valves twin discs are connected by a linkage arrangement to the pneumatic actuator that simultaneously operates the pneumatic poppet valves.


  • Full range of seats materials available
  • Optional end connections
  • Full range of optional accessories
  • Linkage driven, with only one actuator required
  • Linkage safety guard fitted as standard
  • Failsafe pneumatic interlocks
  • Fully machined 316L or 304L stainless steel body
  • Overlapping discs to minimize leakage cavity volume on larger sizes
  • Travel limited actuator to stop disc contact on larger sizes


  • Isolation and safe separation of incompatible fluids, in the food, dairy, brewing, pharmaceutical and beverage industries. 


Pentair Südmo, located in Riesbürg, Germany, has more than 60 years experience in hygienic process equipment, and an extensive range of stainless steel sanitary and aseptic valves and fittings, complete manifolds and prefabricated units for the food, dairy, beverage, pharmaceutical, chemical, and cosmetic industries.


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