SOLENOID VALVE EV220B NCG 1/2-4M/H EPDM 032U7115 DANFOSS

SOLENOID VALVE EV220B NCG 1/2-4M/H EPDM 032U7115 DANFOSS

Description;

EV220B 15 – 50 are a universal indirect servo operated 2/2-way solenoid valve program. Valve body in brass, dezinciöcation resistant
brass and stainless steel ensures that a broad variety of application can be covered. Built-in pilot ölter as standard, adjustable closing
time and enclosures up to IP67 ensures optimalperformance even under critical working conditions.
Features & beneöts
Applications
For water, steam, oil, compressed air and non øamable gases.
Ambient temperature: Up to 80 °C
Coil enclosure: Up to IP67
Water hammer damped
Built in ölter for protection of pilot system
Adjustable closing time available
It is recommended to use a ölter in front of the valve. Recommended ölter 50 mesh (297 microns).
Figure: Filter
In water applications, exercise the valves at least once every 24 hours, meaning change the state of the valve. The valve exercise will
minimize the risk of the valve sticking due to calcium carbonate, zinc or iron oxide build-up.
Figure: Exercise: Valve on/off
Guidelines for water
To minimize scaling, and corrosion attack it is recommended that the water passing the valve have the following values:
Hardness 6 – 18 °dH to avoid scaling (chalk / limestone build up).
Conductivity 50 – 800 µS/cm to avoid brass dezinciöcation and corrosion.
Above 25 °C media temperature avoid stagnant water inside the valve to avoid dezinciöcation and corrosion attack.
Drinking water (Ph 6 – 9)