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 Updated: 5 Nov 2018
 

 

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Startpage > Produkter > Valves & Actuators > Valve Calculation > Valve Dimension

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Valve Dimension

=  Mains affected by the valveīs variable flow

To get the flow of 5 m3/h through the water heaterīs primary side the pressure should be 10 kPa. Available pressure drop 100 kPa.
Calculate the Kυ-value of the valve and β

Solution:
Pυ = 100 - 10 = 90 kPa (0,9 bar)

Kυ = q /√∆p = 5/√0,9 = 5,27

Kυ = 5,27
(+40% =7,38; -20% = 4,2)

Valve Authority β
Kυ = 6,3
∆pυ = (5/6,3)2 = 0,63

β = 63/100 = 0,63 (bra β > 0,5) 

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