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Head loss coefficient applicable to partially open angle valve

Input data

Diameter

Opening fraction (%)

Output data

k applicable to h = k.U²/2g

kQ applicable to h = kQ.Q²

Description

Find the head loss coefficients for partially angle valves.

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

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

Failed to load imageAngle valve

Description

Find the head loss coefficients for partially angle valves.

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

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

Failed to load imageAngle valve

References

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