Interactive 9.1.4 Pressure Drop

Pick a type, a size and the first flow direction. The test circuit (ISO 18869 Figure 13), the straight lengths L1–L5, the flow points and the Cv limits change to match. Use the tabs to see all values, to watch the set-up and tare and the test as animations, or to calculate A, B and Cv from your own readings.

How to read the numbers

Every row is tagged spec (from the OCP specification), internal (our own proposal where the specification is silent, see the backlog) or ref (reference value only). The drawing is a schematic and not to scale. In the animations the movements are slowed down, and flow and pressure drop follow an example sample (not measurements). The calculator runs in your browser only.