working pressure detail of sch 40 & sch 80 pipe

Pressure Vs. Temprature rating Chart for CPVC 4120 CPVC Pipes as per ASTM F 441

Temperature (0C)
Class Size
mm (inch)
270c 320c 380c 430c 490c 540c 600c 660c 710c 770c 820c 930c
SCH-40 65(2-1/2″) 21.09 19.19 17.30 16.24 13.71 13.08 10.55 9.91 8.44 6.75 5.27 4.22
80(3″) 18.28 16.64 14.99 14.08 11.88 11.33 9.14 8.59 7.31 5.85 4.57 3.66
100(4″) 15.47 14.08 12.68 11.91 10.05 9.59 7.73 7.27 6.19 4.95 3.87 3.09
150(6″) 12.66 11.52 10.38 9.74 8.23 7.85 6.33 5.95 5.06 4.05 3.10 2.53
200(8″) 11.20 10.19 9.18 9.18 7.28 7.28 5.60 5.60 4.48 4.48 2.80 2.24
SCH-80 65(2-1/2″) 29.53 26.87 26.21 22.74 19.19 18.31 14.77 13.88 11.81 9.45 7.38 5.91
80(3″) 26.01 23.67 21.33 20.03 16.91 16.13 13.01 12.23 10.41 8.32 6.50 5.20
100(4″) 22.50 20.47 18.45 17.32 14.62 13.95 11.25 10.57 9.00 7.20 5.62 4.50
150(6″) 19.69 17.91 16.41 15.16 12.80 12.21 9.84 9.25 7.87 6.30 4.32 3.94
200(8″) 17.50 15.75 14.35 14,35 11.88 11.38 8.75 8.75 7.00 7.00 4.38 3.50