Recommendations

Parshall flume selection (Life Saneamento)Atmospheric pressure given altitude Venturi flow meter Dynamic viscosity of atmospheric air Trenches of residencial septic tank Head loss coefficient of a totally open butterfly valve

Determinação dos coeficiente de perda de carga aplicáveis a válvulas de globo parcialmente abertas

Default

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:

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

Globe valve

References

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