Spider Valves

Characteristics

- Frictionless movement
- Fast response times
- High cycle life
- Small Size

Principle of operation

Instead of having a plunger which moves through a coil, Spider®-Valves have a flat armature that is pulled against the magnetic yoke in the energized position. The flat armature is fastened together with a leaf spring that presses the integrated sealing element against the valve seat in the de-energized position. Flat armature valves distinguish themselves according through practically frictionless movement throughout very high cycle life (depending upon application > 10^9) and, due to the very low mass of the armature, through switching times in the microsecond (ms) range. Therefore, they are applicable as quasi-proportional valves in that they can be driven with current pulses. The response time in switching can be varied as desired to attain variable flow rates (so called pulse width modulation).