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CYLINDER VALVES <br /> Natura IGS uses a pneumatically operated high pressure <br /> ® A B 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 /> Figure 1. Typical Cylinder Assembly the inside of the cylinder will remain dry, thus providing <br /> protection against corrosion. <br /> Figure 2 represents valve arrangement. <br /> Approximate Empty <br /> Part Number Capacity Weights <br /> kg lb <br /> 38-4280X1-100 80 L 103.0 227.1 <br /> 38-421431-100 140 L 198.0 436.52 <br /> Height(B) <br /> Part Number Capacity <br /> in mm Side View Rear View <br /> 38-4280X1-100 80 L 73.32 1862 Figure 2. Valve General Arrangement <br /> 38-421431-100 140 L 73.5 1867 PURITY <br /> Diameter(A) The purity of the Nitrogen shall be as follows: <br /> Part Number Capacity Nitrogen greater than or equal to 99.7%. <br /> in mm Oxygen less than or equal to 10 ppm. <br /> • Water less than or equal to 10 ppm. <br /> 38-4280X1-100 80 L 10.51 267 <br /> Note: Only principal contaminants are shown. Other <br /> 38-421431-100 140 L 14.17 360 measurements may include: Carbon Monoxide, <br /> Volume Carbon Dioxide, Nitrogen Oxide, and Nitrogen <br /> Part Number Capacity Dioxide most < 20 ppm. <br /> in m3 <br /> PRESSURE VERSE TEMPERATURE FORMULAS <br /> 38-4380X1-100 80 L 4882 0.08 The following table lists the agent pressure verses tem- <br /> 38-431431-100 140 L 8543.32 0.14 perature formulas for IG-100. <br /> Note: Agent choice does not impact cylinder dimensions. Temp. 200 bar 300 bar <br /> Unit <br /> OF P=0.555(t)+ 167.2 P=0.894(t)+247.1 <br /> °C P=0.999(t)+ 185.0 P=1.610(t)+275.7 <br /> or Kidde 2 K-38-2005 <br /> Fire Systems Effective:April2021 <br />