How do I replace diaphragms for Y-Valves in the human face masks supplied by ADInstruments?

ADInstruments provides Y-valves with the face masks for breathing experiments (spirometry).

Within these Y-valves are diaphragms that allow air to flow in one direction only. Over time, these valves may require replacement.

By unscrewing the appropriate section of the Y-valves, you can remove the diaphragm assembly. This assembly consists of the Diaphragm (Spiral-Type) membrane which sits on the Diaphragm Ring (seat).

Replacement items may be purchased separately as, others are also available for different valve types

  • 2700 Series Diaphragm, Spiral Type (Large)
  • 2700 Series Diaphragm Ring (Seat)

For further technical assistance with this or any other issue, please contact ADInstruments Technical Support by clicking HERE.