flamco MeiFlow Shunt UD DN15 S, Инструкция по установке и обслуживанию, Страница: 14 / 66

MeiFlow Shunt UD
Last updated: Aug-19
ENG Page 14
Flow diagram for NV Vertex DN25 IG/IG
The diagram illustrates the entire drop in pressure across the NexusValve Vertex for a specified preset and flow
rate.
The minimum setting of the digital scale is 0.0 and the maximum setting (a fully opened valve) is 9.9. One
hundred different positions in increments of 0.1 are possible, each of which represents a different Kv value.
The Kv value and the Kvs value (with a fully opened valve) refer to the drop in pressure across the entire valve.
These values are used to dimension the system and select the pump. The Kv and Kvs values are not the same as
the Kvm value, which is connected to the drop in pressure at the measurement points. The Kvm value is used to
ensure the correct flows are displayed on the flow meter when balancing the system. The Kvm value that
corresponds to a specific setting on the NexusValve Vertex is entered as the flow indicator in the flow meter.
A drop in pressure of up to 250 kPa is permissible across the NexusValve Vertex. It must be ensured within the
workspace that no cavitation occurs in the event of any drop in pressure.