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Switch to lower wattage coils
In addition to all the features mentioned above, the overall
improvements in our EVR valves open up the possibility
of changing to standard coils in applications where
the operating conditions allow it. This would further
streamline logistics and reduce your costs.
Upgrades and new features
compatible with modern refrigerants
EVR valves are optimized for the business success of our
customers, manufacturers, and end users. All innovations
were tested to ensure they improved the product and
optimized it to meet the needs of today’s customers.
More robust design and
system reliability
Several design features enable
operation with a higher maximum
working pressure (MWP). The new EVR
range is compatible with higher
pressure refrigerants such as R410A,
and suitable for applications such as
heat pumps and chillers running in
extreme ambient temperatures during
periods of maximum load.
• Increased diameter of cover screws
enhance the reinforced covers for
greater reliability under higher
pressures.
• Robust housing design and stronger
covers make EVR valves more reliable,
extending their MWP up to 45 bar.
• Thicker copper connections reduce
the risk of valve failure raising MWP.
• Improved gasket design increases the
valve’s robustness and reliability.
Enhanced functionality
Other design features within the new
EVR range enhance its functionality
making it suitable for applications,
which operate at part load for long
periods, such as chillers. It can also now
be used in applications such as
icemakers and ice cream machines
where a suction line solenoid valve is
required for defrosting.
• Single-layer diaphragm instead of the
usual two optimizes the opening of
the valve and increases versatility and
reliability. In high-capacity applications
and tough operating conditions (e.g.
hot gas defrost), the Danfoss single-
layer solid ‘monophragm’ eliminates
the risk of delamination.
• New pilot orice design allows a
higher maximum opening pressure
dierential (MOPD) with standard coils.
This means you can use the new EVR
with high-pressure refrigerants under
demanding operating conditions.
• The new pilot orice design also
optimizes the opening of the valve. It
reduces pressure drop within the valve
and makes it compatible with suction
line applications.
Easier service
EVR valves are ideal for applications
such as food retail display cases since
they enable service and maintenance
to be carried out quickly, with no
disruption to store trading hours. There
is no need to de-solder the complete
valve and put a new one into the
system. Just leave the valve body in
place, replace the internal parts as
required and you can get the system
up and running again quickly. Service
kits are also available.
• New EVR features the same easy and
fast serviceability as the current
solenoid valves from Danfoss.
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