Filling valve IMMERGAS EOLO STAR / NIKE STAR / EOLO STAR 23 kW / NIKE STAR 23 kW / DAKON / ENBRA - 1.021831 / 1.021831P / 1.016983 / 7034 0141 / 87381021420 / 95000104 / 8738102142 / 70340141 / 25-00491
You can also purchase an O-ring 3.016039 for the intake valve.
The product has been replaced and can be found under catalog number 1.021831P