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Valve Flow Co-efficient (Cv)
One of the primary costs after the initial capital outlay is running costs, especially in a pump station. A valve’s Cv determines the pressure drop between the inlet and outlet ports of the valve. The lower the pressure drop the higher the Cv, which in turn results in lower power consumption of the pump. We at Hydrocore have modelled a standard globe valve (SGV) to determine its Cv.
The calculator works out the power penalty cost of a Hydrocore Isolating Valve versus a SGV. As is evident, the cost savings using a Hydrocore Isolating Valve versus a SGV are astronomical even within the first couple of years. Assuming that the price of electricity is not going to go down in the future, those cost savings will only increase.
Hydrocore Isolating Valve
Standard
Globe Valve
Isolating
Valves
Size
(NB / Inch)
Max. Pressure (bar)
Flow Coefficient (Cv)
50NB (2")
80NB (3")
100NB (4")
150NB (6")
200NB (8")
250NB (10")
300NB (12")
250
250
250
160
160
160
160
63
161
235
525
1086
1464
1936
Non-return
Valves
Size
(NB / Inch)
150NB (6")
200NB (8")
250NB (10")
300NB (12")
Max. Pressure (bar)
160
160
160
160
Flow Coefficient (Cv)
802
1583
2867
2978
Max. Flow Rate
(litres / second)
9
25
38
117
152
233
337
Max. Flow Rate
(litres / second)
120
180
300
380
Hydrocore Non-Return Valve
Standard
Non-Return Valve
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