Title: +038=310.101-SC020T_01-FDV-dokumentasjon - Danfoss AS - VA_VVS 5640741 med flere - EV220B 15-50_1.pdf
Coil voltage connected (closed): When voltage is applied to the coil, the valve plate (3) is pressed down against the pilot orifice (4). The pressure across the diaphragm (5) is built up via the equalizing orifice (7). The diaphragm closes the main orifice (6) as soon as the pressure across the diaphragm is equivalent to the inlet pressure. The valve will be closed for as long as there is voltage to the coil.s s o f n a D0 1 0 7 9 U 2 3.12Capacity diagrams:Example, water: Capacity for EV220B 15B at differential pressure of 3 bar. Approx. 7 m3/h