Proportional valves
Switching solenoid valves, which are normally closed, form the basis for Bürkert proportional valves. Making constructive modifications to switching solenoid valves can achieve a balance of the spring and magnetic force for any coil current. The level of the coil current and magnetic force determines the stroke of the plunger or the valve opening, whereby the valve opening and the current are ideally linked by a linear dependence.
