https://www.buschjostventile.de/es/products/3-050/details/3-050-25-1004-R322-HA-1U-46250
E4927/1004/-TH RailWay | solenoid valve
Valve non-energised closed by spring power - NC. A pressure differential (delta p) is not required for the operation.
thrailwaysolenoidvalve