voima toolbox beta

Recommendations

Velocity gradient in rectangular orifices Gate valve Check valve Calculation of reservation volume of water supply system Sigma Mechanized inclined screen grid Submerged aerated biofilter

Head loss coefficient applicable to totally open gate valve

Default

Input data

Diameter

a/A

Output data

k for θ = 10°

kQ for θ = 10°

k for θ = 20°

kQ for θ = 20°

Description

Find the head loss coefficients for fully open gate valves.

Given the diameter and the passage area/pipe area of a gate valve, calculates de head loss coefficients applied to the formulae:

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

Gate valve

Description

Find the head loss coefficients for fully open gate valves.

Given the diameter and the passage area/pipe area of a gate valve, calculates de head loss coefficients applied to the formulae:

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

Gate valve

References

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