Danfoss EV210B - Page 26

24
IC.PS.600.A4.02 / 520B2809
IC.PS.600.A4.02 / 520B2809
[s]
[mm]
EV220B 15 EV220B 20 EV220B 25 EV220B 32 EV220B 40 EV220B 50
0.5 1 0.04 0.35 0.04 1.0 0.11 3.0 1.6 6.0 1.3 8.0 3.4 40.0
0.8 2 0.04 0.3 0.04 0.5 0.3 1.0 1.0 2.5 1.5 4.0 3.6 11.0
1.2 3 0.04 0.12 0.04 0.25 0.30 0.5 1.2 1.0 1.5 2.0 5.0 10.0
1.4 4 0.04 0.1 0.06 0.18 0.30 0.4 1.0 0.8 2.0 1.5 5.2 6.5
Opening and closing times
Changing opening and
closing times
Please note for high performance type.
EV220B 15-50 closing times can be changed by
replacing the equalising orice at the inlet side
of the valve (see “Water hammer", page 15, and
“Spare parts”, page 34). To decrease water hammer,
choose a smaller equalising orice.
The table shows the opening and closing times
depending on the equalising orice chosen
(standard times marked in bold). The times stated
cover water as a medium, and are for guidance
only. Tube dimensions / lengths and operating
conditions, for example dierential pressure, may
inuence the values.
Open Close Open Close Open Close Open Close Open Close Open Close
grooves
1
Orice
1
Number of grooves