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Head loss coefficient applicable to partially open globe valve

Input data

Diameter

Opening section

Output data

k applicable to h = kU²/2g

kQ applicable to h = kQ.Q²

Description

Find the head loss coefficients for partially globe valves.

Given the diameter and the opening relation of a globe valve, calculates the head loss coefficients , for the expressions:

  1. For k applicable to: $$ hf = \frac{k \cdot U^2}{2\cdot g} $$
  2. For $k_Q$ applicable to: $$ ℎf = k_Q\cdot Q^2 $$

Globe valveGlobe valve

References

  • Miller, Donald S. Internal flow systems. BHRA Fluid Engineers, 1978.