Mott’s vacuum flow restrictor is the new, high accuracy vacuum flow control technology. The vacuum flow restrictor excels in performance at ultra-low flow rates, where current flow controller technology may experience chatter and inconsistency.

When compared to a drilled orifice, these gas flow restrictors channel through thousands of pores instead of just one, reducing gas exit velocity and resulting in a more laminar flow.

Typically used in semiconductor manufacturing and analytical instrumentation, the vacuum flow restrictor can also be used in a variety of industries where the need for flow control in vacuum conditions exists.

Additionally, this product can be customized to your specifications and is more cost efficient than current flow control technology.


  • Load locks, process chambers, and gas delivery systems
  • Analytical instruments under vacuum conditions
  • Nitrogen blankets for fermentors
  • Diffusion furnaces


  • Microelectronics
  • Analytical Instrumentation
  • Biotechnology
  • Pharmaceutical