Components; Nexusvalve Vivax And 3-Section Actuator (In Primary Circuit); Configuration - flamco MeiFlow Shunt UD DN15 S Montage-/Serviceanleitung

5. Components

5.1

NexusValve Vivax and 3-section actuator (in primary circuit)

The NexusValve Vivax valve is a combination of a pressure-independent flow limiter and a control
valve that maintains a constant flow irrespective of any fluctuations in pressure.
Together with the actuator, it combines an automatic flow limiter with a two-way control valve. When
given complete control authority, the valve reacts immediately and regulates the flow in accordance
with the signal sent e.g. by a room thermostat. The NexusValve Vivax valve prevents the system from
overflowing at any time.

Configuration:

The NexusValve consists of a presetting unit which functions like a manual circuit regulation valve, an
actuator, a differential pressure regulator, measurement points, a fluctuation jet and a valve housing.
Last updated: Aug-19
Functions:
The internal valve parts are configured as
insertable units. The complete insert can be
taken out for ease of system flushing. Once the
insert has been removed, a blind cap (which
also serves as a flow presetting tool) is fitted to
ensure the housing is leak-tight during
flushing.
Dimensions in [mm]:
A
DN15 S 76
DN20 S/H 83
Type; Kvm;
DN15 S (½"); 0.78 m³/h; red
DN20 S (¾"); 1.90 m³/h; white
DN20 H (¾"); 4.70 m³/h; black
ENG
MeiFlow Shunt UD
B C D
35 95 44
49 120 55
colour code:
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