Mark 978LF – Low Flow Control Valve

The Mark 978LF is ideal for use with sparge gas, WFI, buffers, elution flows or ingredient addition to sanitary and aseptic processes in the pharmaceutical, biotechnology, cosmetic, dairy, and food & beverage industries. Whether the need is to control pressure, temperature, flow, pH, level or other variables, the Mark 978LF’s true characterized trims and excellent repeatability make it the right choice for your sanitary process application.


  • All stem guiding above the wetted process – to eliminate particulate generation
  • No threads in contact with service media – prevents accumulation of contaminants
  • Self-draining – when mounted in vertical or horizontal orientations
  • Wetted parts made of 100% ASTM A479 316L Stainless Steel barstock
  • Maintenance friendly – easy to perform maintenance with simple disassembly, reassembly and steam-in-place/clean-in-place capabilities
  • Epoxy coated multi-spring actuators provide excellent corrosion resistance during washdown
  • SF5 (20 Ra µin (0,5 Ra μm) electropolish) standard; 8 Ra optional
  • FDA and USP Class VI conformity on all process seal materials