Trane CVHH CenTraVac Installation, Operation And Maintenance Manual page 41

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
1000
100
10
10
N N o o t t e e : : 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.
CVHH-SVX001G-EN
100
L = Pipe Length (Equivalent Feet)
V V e e n n t t P P i i p p i i n n g g
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
41