Select the solenoid valve according to the duration of operation

Choose according to the continuous working time: normally closed, normally open, or continuously energized

1) When the solenoid valve needs to be opened for a long time, and the duration is longer than the closing time, the normally open type should be selected;

2) If the opening time is short or the opening and closing time is not long, the normally closed type is selected;

3) However, for some working conditions used for safety protection, such as furnace and kiln flame monitoring, the normally open type cannot be selected, and the long-term electrified type should be selected.