| 摘要 |
<p>PURPOSE: To provide an adjustment valve extremely accurately and surely adjusting a valve from the outside. CONSTITUTION: This is a pressure adjustment valve for circuits having an intake port 3 and a discharge port 4, including a body 2 provided in a circuit for a manual breathing apparatus, and manually controlling gas mixtures in the medical field. The body 2 is provided with adjustment valve 10, 21 in its inside which can be positioned to vary the useful passage section of the gas stream to modify the resistance created by the adjustment valves 10, 21 to the gas stream.</p> |
