PVC Duct Product Ratings

GF Harvel PVC Duct performs well when exposed to harsh environments. GF Harvel PVC Duct has been taken to extremes under various negative and positive pressure conditions in applications as diverse as laboratory work and industrial metal finishing operations. The ratings shown in the charts below incorporate a 1.5:1 safety factor.

MAX. Internal Negative Pressure Rating

Inches of Water @ Various Temperatures °F
SIZE TEMPERATURE °F
73 80 90 100 110 120 130 140
6" x 1/8" 115 101 86 71 59 46 36 25
6" 415 365 311 257 212 166 129 91
7" 301 265 226 187 153 120 93 66
8" 188 166 141 117 96 75 58 41
9" 146 129 110 91 75 59 45 32
10" 97 85 73 60 50 39 30 21
11" 82 72 61 51 42 33 25 18
12" 58 51 44 36 30 23 18 13
14" 44 39 33 27 22 18 14 10
16" 29 26 22 18 15 12 9 6
18" 21 18 16 13 11 8 6 4
20" 24 21 18 15 12 10 7 5
24" 21 18 16 13 11 8 6 4
PSI = Inches of Water x .0361; Inches of Mercury = Inches of Water x .07355

 

Positive Pressure
GF Harvel PVC Duct can endure greater levels of positive internal pressure than negative internal pressure. The Positive Pressure Rating table shows the maximum recommended internal pressure rating in PSI for GF Harvel PVC Duct at various temperatures.

MAX. Internal Positive Pressure Rating

PSI @ Various Temperatures °F
SIZE TEMPERATURE °F
73 80 90 100 110 120 130 140
6" x 1/8" 42 37 31 26 21 17 13 9
6" 70 62 52 43 35 28 22 15
7" 64 56 48 40 32 25 20 14
8" 53 47 40 33 27 21 16 12
9" 74 65 55 46 38 29 23 16
10" 43 39 32 27 22 17 13 9
11" 61 53 46 38 31 24 19 13
12" 36 32 27 22 18 14 11 8
14" 33 29 25 20 17 13 10 7
16" 28 25 21 17 14 11 9 6
18" 25 22 19 15 13 10 8 5
20" 26 23 20 16 13 10 8 6
24" 25 22 19 15 13 10 8 5