This animation shows how the normally open (NO) version of the EV250B assisted-lift valve works at differential pressure from 0 to 10 bar.

Like its normally closed (NC) counterpart, EV250B NO is a program of 2/2-way solenoid valves designed to operate in closed circuits with low or fluctuating differential pressure, and moderate flow rates.

As the cutaway reveals, the armature top is located below the armature, so when the coil is energized it is pulled downwards, closing the valve.

If pressure is low when the coil is de-energized, the EV250B NO has a lift assist spring to raise the diaphragm and open the valve.

The valve offers long-lasting service life, even with aggressive steam media up to 140 °C, thanks to its dezincification-resistant brass body. It is also compatible with the wider Danfoss coil program, and available with enclosures from IP00 to IP67.

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