TECH SPECS
Four models available to meet
each patient's needs:
Model 511 - Whole liter flow settings (1-6 lpm)
Model 512 - Half liter flow settings (1-4 lpm)
Model 511WG - Whole liter flow settings (1-6 lpm) without a pressure gauge
Model 523 (not pictured) - Whole liter flow settings (1-6 lpm) with a CGA 540 threaded valve connection