Trane CenTraVac CDHH - Page 40

40
CDHH-SVX003C-EN
Figure 28. Rupture disk vent pipe sizing (IP units); for use with preceding table
Pipe size as a Function of “C” Value and Length of Run
“C” Value (lb/min)
L = Pipe Length (Equivalent Feet)
Pipe Size (I.D.)
Friction Factor
6 NPS
6.06 in.
f = 0.0149
5 NPS
5.05 in.
f = 0.0155
4 NPS
4.03 in.
f = 0.0163
3 NPS
3.07 in.
f = 0.0173
1000
100
10
10 100 1000
Note: The preceding figure, provided as a reference, is based on ASHRAE Standard 15. Vent line size is typically dictated by
state or local code which may be different from ASHRAE Standard 15 requirements.
Vent Piping