Kidde Fire Protection 400 Series, Design, Installation, Operation, And Maintenance Manual

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System Design
July 2018 3-22 06-237518-001
3-17.3 Pipe Sizing
The following table may be used as an estimating guide for sizing distribution piping. This table
is intended for use as a guide only. Use the Kidde IGS Flow Calculation software for the final
design.
Note: For a 120 second discharge, use one pipe size less than the size shown in Table 3-17.
3-17.4 Other Conditions
3-17.4.1 Operating/Storage Temperature Range
The
Kidde IGS equipment listed herein is designed to operate within the range of
-20°C to 50°C (-4°F to 122°F). The Kidde IGS Flow Calculation software assumes a
temperature of 20°C (68°F).
3-17.4.2 Storage Temperature
Kidde IGS equipment is suitable for storage from -20°C to 50°C (-4°F to 122°F).
Table 3-17. Pipe Size vs. Flow Rate
Pipe
Dimensions
Standard
DIN 2442 DIN 2448 DIN 2458 Sch. 40 BS 10255
Kg/minute Kg/minute Kg/minute Kg/minute Kg/minute
½” 1 – 25 1 – 25 1 – 25 1 – 30 1 – 30
¾” 25 – 50 25 – 50 25 – 50 30 – 50 30 – 50
1” 50 – 80 50 – 80 50 – 80 50 – 85 50 – 85
1 ¼” 80 – 145 80 – 145 80 – 145 85 - 150 85 - 150
1 ½” 145 – 190 145 – 190 145 – 190 150 – 200 150 – 200
2” 190 – 320 190 – 320 190 – 320 200 – 335 200 – 335
2 ½” 320 – 550 320 – 550 320 – 550 335 – 475 335 – 475
3” 550 – 760 550 – 760 550 – 760 475 – 740 475 – 740
3 ½” N.A. N.A. N.A. 740 – 990 N.A.
4” 780 – 1260 780 – 1260 780 – 1260 990 – 1275 990 – 1275
5” 1260 – 1870 1260 – 1870 1260 – 1870 1275 - 2000 1275 - 2000
6” 1870 – 2800 1870 – 2800 1870 - 2800 2000 - 3000 2000 - 3000