The Type 6624 TwinPower rocker valve consumes no energy after the switching process. The standard rocker valve has two seats, which are opened and closed with electric current. They return to the original state if the current is turned off. With the pulse version, a current or pulse is used only to open a seat; afterwards, it retains its position without a power supply. This is made possible with a permanent magnet that attracts the iron core of the rocker valve. The valve can be returned to its original state by means of another electrical current. This means the Type 6624 valve is available in both a neutral and bistable version. — Bürkert Fluid Control Systems, Ingelfingen, Germany