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Divator/Spiromatic Valve seat & disc assembly, for Inner mask. pair

  • Single item reference part number 336590721
  • Clark et alia, showed as far back as 1980, the relatively small increase in Carbon dioxide that will cause physiological discomfort and dramatically increase breathing rates.
£10.20 (inc VAT) £8.50 (exc VAT)
0.10 KGS
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Product Description

Valve seats and discs, fitted to the inner mask prevent build up of exhaled Carbon dioxide. Offering low flow resistance, for unhibited breathing, it is important that these valves are in good condition.

Valve discs should be replaced whenever they appear not to seat properly, or have started to perish or harden. The valve discs are routinely replaced annually, at service intervals.

Should the inner mask valves leak, concentrations of Carbon Dioxide may rise above 1% by volume. When this occurs, the rate of breathing will increase and air-duration will correspondingly decrease.

Research by Clarke, et alia, showed that breathing rates may treble, as CO2 concentrations rise above 2%. **

**  an illustration from Clark's paper, showing the effect of increases in re-breathed CO2 is illustrated here.

Warranty Information

12 months

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