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Figure 1. Typical Cylinder Assembly <br />Part Number <br />Capacity <br />Approximate Empty <br />Weights <br />kg <br />lb <br />38-4280X1-100 <br />80 L <br />103.0 <br />227.1 <br />38-421431-100 <br />140 L <br />198.0 <br />436.52 <br />Part Number <br />Capacity <br />Height (B) <br />in <br />mm <br />38-4280X1-100 <br />80 L <br />73.32 <br />1862 <br />38-421431-100 <br />140 L <br />73.5 <br />1867 <br />Part Number <br />Capacity <br />Diameter (A) <br />in <br />mm <br />38-4280X1-100 <br />80 L <br />10.51 <br />267 <br />38-421431-100 <br />140 L <br />14.17 <br />360 <br />Part Number <br />Capacity <br />Volume <br />in3 <br />m3 <br />38-4380X1-100 <br />80 L <br />4882 <br />0.08 <br />38-431431-100 <br />140 L <br />8543.32 <br />0.14 <br />Note: Agent choice does not impact cylinder dimensions. <br />or Kidde <br />Fire Systems <br />CYLINDER VALVES <br />Natura IGS uses a pneumatically operated high pressure <br />cylinder valve, designed for an operating pressure of up <br />to 366 bar (tested and CE marked according to EN <br />12094-4, tested and PI marked according to ATR D 2/11 <br />(TPED). <br />Each valve includes quick connect connectors for the <br />pilot actuation line to allow pneumatic opening of the <br />valve. Each primary cylinder in the bank will be fitted with <br />an electrical/manual release unit. <br />A pressure gauge/switch included in the release unit or <br />secondary cylinder gauge assembly provides local and <br />optional remote monitoring of the cylinder pressure. Nor- <br />mally the gauge/switch is electrically connected in a sin- <br />gle loop configuration for common remote monitoring. <br />After a discharge the cylinder valve will close automati- <br />cally when the pressure has fallen to < 3 bar. The resid- <br />ual gas content will prevent ingress of moisture ensuring <br />the inside of the cylinder will remain dry, thus providing <br />protection against corrosion. <br />Figure 2 represents valve arrangement. <br />Side View Rear View <br />Figure 2. Valve General Arrangement <br />PURITY <br />The purity of the Nitrogen shall be as follows: <br />• Nitrogen greater than or equal to 99.7%. <br />• Oxygen less than or equal to 10 ppm. <br />• Water less than or equal to 10 ppm. <br />Note: Only principal contaminants are shown. Other <br />measurements may include: Carbon Monoxide, <br />Carbon Dioxide, Nitrogen Oxide, and Nitrogen <br />Dioxide most < 20 ppm. <br />PRESSURE VERSE TEMPERATURE FORMULAS <br />The following table lists the agent pressure verses tem- <br />perature formulas for IG-100. <br />Temp. <br />200 bar <br />300 bar <br />Unit <br />°F <br />P = 0.555(t) + 167.2 <br />P = 0.894(t) + 247.1 <br />°C <br />P = 0.999(t) + 185.0 <br />P=1.610(t) + 275.7 <br />K-38-2005 <br />Effective: April 2021 <br />