Title: +038=310.101-SC020T_01-FDV-dokumentasjon - Danfoss AS - VA_VVS 5640741 med flere - EV220B 15-50_1.pdf
s s o f n a D0 1 6 4 8 U 2 3.Function NO, brass, DZR brass and stainless steelCoil voltage disconnected (open): When the voltage to the coil (2) is disconnected, the pilot orifice (4) is open. As the pilot orifice is larger than the equalizing orifice (7), the pressure across the diaphragm (5) drops and therefore it is lifted clear of the main orifice (6). The valve will be open for as long as the minimum differential pressure across the valve is maintained, and for as long as the voltage to the coil is disconnected.1. Coil 2. Armature 3. Valve plate 4. Pilot orifice 5. Diaphragm 6. Main orifice 7. Equalizing orifice