Module 3 Process Piping Hydraulics Sizing And Pressure Rating Pdf Better -

Instead of custom-making every part, the industry uses (Classes). Common classes include 150, 300, 600, 900, 1500, and 2500. A "Class 300" flange doesn't always mean it handles exactly 300 psi; its actual capacity changes based on the material and the operating temperature . 3. Why a "Better" PDF Matters for Module 3

To prevent erosion or excessive noise, liquids typically flow between 1–3 m/s, while gases can reach much higher velocities. Pressure Drop ( ΔPcap delta cap P Instead of custom-making every part, the industry uses

(Where P = Pressure, S = Allowable Stress, t = Wall Thickness, and D = Outside Diameter) Pressure Classes (Flanges) liquids typically flow between 1–3 m/s

The most critical calculation in Module 3 is Barlow’s Formula, used to relate internal pressure to allowable stress and wall thickness: S = Allowable Stress

P=2StDcap P equals the fraction with numerator 2 cap S t and denominator cap D end-fraction