Title: +038=320.103-SB005T_08-Energy Valve Reguleringsventil Belimo - Generelle merknader for prosjektering.pdf
The calculated kv value from Step 3 can be used to determine a kvs value in the flow chart (see further notes for project planning for characterised control valves, globe valve, butterfly valve or QCV) . If the kv value lies between two kv curves in the flow chart: – If the calculated kv value is closer to the lower kv curve, then select the smallerkvs value.– If the calculated kv value is closer to the higher kv curve, then select the largerkvs value.– If the kv value lies in the middle between two kv lines, select the smaller kvs value for a 2-way control valve and the larger kvs value for a 3-way control valve.If the kv value is above the highest kv curve, then select the largest possible kvs value. If the kv value is below the lowest kv curve, then select the smallest possi- ble kvs value. Here an example with calculated kv = 5.15 m3/h:∆pv100 [bar]1 0 0.2 0 0.3 0 0.4 0 0.5 0 0.6 0 0.8 0 0.1 0.2 0.3 0.4 0.5 0.6 0.8 0.12 3 4 5 6 8